CN208287767U - A kind of sulfur dioxide reclaiming system - Google Patents
A kind of sulfur dioxide reclaiming system Download PDFInfo
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- CN208287767U CN208287767U CN201820549969.8U CN201820549969U CN208287767U CN 208287767 U CN208287767 U CN 208287767U CN 201820549969 U CN201820549969 U CN 201820549969U CN 208287767 U CN208287767 U CN 208287767U
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Abstract
The utility model discloses a kind of sulfur dioxide reclaiming system, including preprocessing module and sulfur dioxide recovery module；The preprocessing module includes scrubbing tower, is disposed with chill zone, filtering module dedusting area and mist eliminating zone in the scrubbing tower from bottom to top；The chill zone is provided with air inlet, and the mist eliminating zone includes the chimney being connected to at the top of the scrubbing tower, and the chimney top is connect with the sulfur dioxide recovery module；The sulfur dioxide recovery module includes absorption tower, and filler is provided in the absorption tower, and the filler top is connected with regenerator by inlet tube, and the regenerator is connected to the bottom on the absorption tower by outlet tube；It is connected with absorbent holding vessel on the inlet tube, control pump is installed on the inlet tube between the absorbent holding vessel and the absorption tower.Sulfur dioxide reclaiming system provided by the utility model can remove chalk dust removing, acid mist simultaneously and carry out sulfur dioxide recovery.
Description
Technical field
The utility model relates to desulfurizing industrial fume processing technology fields, more particularly to a kind of sulfur dioxide recovery system
System.
Background technique
With country and local, domestic petroleum petrochemical industry row increasingly stringent for the pollutant emission norm controlling of industrial waste gas
The processing problem of the high-salt wastewater pollutant of industry, metal smelt industry etc. is more and more prominent, the production processes such as chemical plant, smeltery
In can generate the higher sulfur dioxide of content, some is at concentrations up to 0.7%v (20000mg/Nm3) even 1.2%v (34000mg/
Nm3), and domestic and international most fume desulphurization method is mostly using the processing such as wet sprinkling, dry method or semidry method, these sides at present
Method is all to be neutralized sulfur dioxide by medicaments such as sodium hydroxide solution, white lime, sodium bicarbonate or concentrated crystal soda dry powder, shape
At neutral salt, direct outlet processing.That there is treatment effeciencies is low for dry desulfurization (such as recirculating fluidized bed, rotary spraying technique),
The problems such as energy consumption is high, medicament utilization rate is low, and that there are slurrying is complicated, treatment effeciency is low etc. asks for semidry method (such as lime stone-gypsum method)
Topic.70% is had more than in installed processing unit in the especially Petrochemical Enterprises of chemical plant at home at present to use at wet process
Reason method, the ammonia process of desulfurization ammonium salt particulate that easily formation is difficult to trap there are the risk of the escaping of ammonia, simultaneously in flue gas are led
Cause serious secondary pollution；Conventional soda wet desulphurization would generally configure drain processing unit, be provided with oxidation tank or aeration
Pond, special disposal COD etc., otherwise discharging any waste liquor is difficult to qualified discharge, also increases the processing load of sewage treatment plant.For compared with
The sulfur dioxide of high concentration, if equally handled using neutralisation, this has resulted in greatly wasting, therefore produces one in recent years
The technology of a little recycling sulfur dioxide, especially for using hydrogen sulfide method for transformation Recovered sulphur device (such as traditional Crouse
And) tail gas, the sulfur dioxide of recycling can be used as the unstripped gas of sulphur recovery, carries out resource utilization.But due to titanium dioxide
Sulfur recovery is related to the control of absorbent condition, needs the dust and SO in flue gas/exhaust gas before recycling sulfur dioxide3Place
Manage require concentration (dust concentration be lower than 10mg/Nm3, SO3/H2SO4Acid mist concentration is lower than 10ppmv=35mg/Nm3), it avoids
The influence of dust and heat stable salt to sulphur dioxide absorbent effect.And it is efficiently removed during handling dust and acid mist
Efficiency, technology controlling and process and equipment material etc. are required to special consideration, otherwise will result in influence to the recovery processing of sulfur dioxide,
Current sulfur dioxide recovery technology both domestic and external is affected by this.
In this context, that develops complete set can go chalk dust removing, acid mist and the skill for carrying out sulfur dioxide recovery simultaneously
Art is particularly important.
Utility model content
The purpose of the utility model is to provide a kind of sulfur dioxide reclaiming system, to solve above-mentioned of the existing technology ask
Topic, can remove chalk dust removing, acid mist simultaneously and carry out sulfur dioxide recovery.
To achieve the above object, the utility model provides following scheme:
The utility model provides a kind of sulfur dioxide reclaiming system, including preprocessing module and sulfur dioxide recovery module；
The preprocessing module includes scrubbing tower, is disposed with chill zone, filtering module dedusting area in the scrubbing tower from bottom to top
And mist eliminating zone；The chill zone is provided with air inlet, and the mist eliminating zone includes the chimney being connected to at the top of the scrubbing tower, described
Chimney top is connect with the sulfur dioxide recovery module；The sulfur dioxide recovery module includes absorption tower, the absorption tower
It is inside provided with filler, the filler top is connected with regenerator, the bottom of the regenerator and the absorption tower by inlet tube
It is connected to by outlet tube；Be connected with absorbent holding vessel on the inlet tube, the absorbent holding vessel and the absorption tower it
Between inlet tube on be equipped with control pump.
Optionally, the inlet tube between the absorbent holding vessel and the regenerator and the outlet tube are connected with heat exchange
Device.
Optionally, the regenerator lower end is connected with reboiler, and the reboiler is formed with the regenerator by pipeline
Circulation loop；The reboiler is heated by outer low pressure steam.
Optionally, water cooler is communicated at the top of the regenerator, the water cooler is connected with return tank, and the return tank is logical
Reflux pump is crossed to be connected to the regenerator.
Optionally, the chill zone is provided with air inlet, and a first spray head is equipped at the air inlet；Described first
Spray head is pumped by first circulation and is connected to the wash tower bottoms；Filtering module dedusting area includes the venturi being vertically arranged
Pipe, the Venturi tube top are equipped with second spray head, and the second spray head is communicated with slurry pool by second circulation pump, described
Venturi tube is arranged on the slurry pool；The first circulation pump is connected with liquid outlet.
Optionally, the liquid outlet is communicated with drain processing module；The drain module include the clarifier being sequentially communicated,
Oxidation tank, surge tank and filter；The clarifier is connect by flocculation system with the liquid outlet.
Optionally, the bottom of clarifier is connected with filter press, and the filter press is connected with reservoir, and the reservoir is logical
Filtering liquid pump is connected to the clarifier.
Optionally, blender is provided in the oxidation tank；Gas access is communicated on the oxidation pot sidewall.
Optionally, the filler top of the recovery tower is provided with spray head and demister.
Optionally, two sections of fillers being arranged above and below, the inlet tube and the regenerator are provided in the regenerator
Junction is located in the regenerator between two sections of fillers.
The utility model achieves following technical effect compared with the existing technology:
Sulfur dioxide reclaiming system structure provided by the utility model is simple, full-featured.Effectively handle in flue gas
Dust and acid mist, flue-gas temperature is dropped between 30-60 DEG C, ensure that sulfur dioxide recovery partially absorbs the high efficiency of agent,
Sulfur dioxide, by recycling treatment, saves the operation consumption of process units as pollutant.Whole system operation more efficiently,
Stabilization, failure rate is low, sulphur dioxide absorbent dosage is few, and technical maturity is high, and anti-fluctuation ability is strong, less scaling, operation dimension
Shield is simple, can long-period stable operation, without post-processing.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the utility model sulfur dioxide reclaiming system structural schematic diagram；
Description of symbols: 1 be scrubbing tower, 2 be air inlet, 3 be chimney, 4 be absorption tower, 5 be filler, 6 be inlet tube,
7 it is regenerator, 8 be outlet tube, 9 be absorbent holding vessel, 10 be control pump, 11 be heat exchanger, 12 be reboiler, 13 is water cooling
Device, 14 be return tank, 15 be reflux pump, 16 be first spray head, 17 be first circulation pump, 18 be Venturi tube, 19 be the second spray
Head, 20 be that second circulation pumps, 21 is liquid outlet, 22 is clarifier, 23 is oxidation tank, 24 is surge tank, 25 is filter, 26 is
Flocculation system, 27 be reservoir, 28 be blender, 29 be gas access.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of sulfur dioxide reclaiming system, to solve above-mentioned of the existing technology ask
Topic, can remove chalk dust removing, acid mist simultaneously and carry out sulfur dioxide recovery.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
The utility model provides a kind of sulfur dioxide reclaiming system, as shown in Figure 1, including preprocessing module and sulfur dioxide
Recycling module；Preprocessing module includes scrubbing tower 1, is disposed with chill zone, filtering module dedusting in scrubbing tower 1 from bottom to top
Area and mist eliminating zone；Chill zone is provided with air inlet 2, and mist eliminating zone includes the chimney 3 being connected to at the top of scrubbing tower 1,3 top of chimney with
The connection of sulfur dioxide recovery module；Sulfur dioxide recovery module includes absorption tower 4, is provided with filler 5 in absorption tower 4, on filler 5
Side is connected with regenerator 7 by inlet tube 6, and regenerator 7 is connected to the bottom on absorption tower 4 by outlet tube 8；Connect on inlet tube 6
It is connected to absorbent holding vessel 9, control pump 10 is installed on the inlet tube 6 between absorbent holding vessel 9 and absorption tower 4.Absorbent
Inlet tube and outlet tube between holding vessel 9 and regenerator 7 are connected with heat exchanger 11.7 lower end of regenerator is connected with reboiler 12,
Reboiler 12 and regenerator 7 form circulation loop by pipeline；Reboiler 12 is heated by outer low pressure steam.Regenerator 7 pushes up
Portion is communicated with water cooler 13, and water cooler 13 is connected with return tank 14, and return tank 14 is connected to by reflux pump 15 with regenerator 7.
A first spray head 16 is installed at the air inlet 2 of chill zone setting；First spray head 16 passes through first circulation pump 17
It is connected to 1 bottom of scrubbing tower；Filtering module dedusting area includes the Venturi tube 18 being vertically arranged, and is equipped with above Venturi tube 18
Second spray head 19, second spray head 19 are communicated with slurry pool by second circulation pump 20, and Venturi tube 18 is arranged on slurry pool；The
One circulating pump 17 is connected with liquid outlet 21.
Liquid outlet 21 is communicated with drain processing module；Drain module includes the clarifier 22 being sequentially communicated, oxidation tank 23, delays
Rush tank 24 and filter 25；Clarifier 22 is connect by flocculation system 26 with liquid outlet 21.22 bottom of clarifier is connected with filters pressing
Machine, filter press are connected with reservoir 27, and reservoir 27 is connected to by filtrate pump with clarifier 22.Stirring is provided in oxidation tank 23
Device 28；Gas access 29 is communicated on 23 side wall of oxidation tank.The filler top on absorption tower 4 is provided with spray head and demister.Regeneration
Be provided with two sections of fillers being arranged above and below in tower 7, the junction of inlet tube 6 and regenerator 7 be located in regenerator 7 two sections of fillers it
Between.
Sulfur dioxide in the utility model absorbs the absorbent used for the aqueous solution of itrogenous organic substance, referred to as amine liquid,
Concentration is 40-50%, less toxic, nonflammable, the sulphur dioxide absorbent that this technology uses, and absorption efficiency is high, in discharged gas fume
Sulfur dioxide concentration is extremely low；Selectivity with higher, the competition that can avoid carbon dioxide absorb.Sulfur dioxide in flue gas exists
It is easier that hydration, ionization occurs under the action of absorbent, to promote the dissolution of sulfur dioxide.Amine absorption agent used
For renewable solvent, consumption is low, and the temperature that the sulfur dioxide to get off adjusts absorbent by water vapour again is trapped from flue gas, can
It will be in desorber SO2Be stripped off, sulfur dioxide product gas at concentrations up to 92.7% or more, wherein in addition to water
Butt concentration is higher than 99.9%.The SO trapped2For producing sulphur, minimizes secondary pollution and generate, maximize product
Income.Amine absorption agent molecule amount used is smaller, and as the absorbent total amount of flue gas volatilization loss is few, stability is good, degrades
Rate is low, regeneration energy consumption is low.
High-temperature flue gas initially enters the chill zone of scrubbing tower 1, and chill zone is mounted with the first spray of the large aperture of special flow passage
First 16, hot fume is come into full contact in the circulation fluid that chill zone is sprayed with first spray head 16, and flue-gas temperature is down to saturation temperature,
The large-sized catalyst granules of this process and a part of SO3It is absorbed.
Filtering module dedusting area is made of the slurry pool and one group of Venturi tube 18 of taper.Saturated flue gas enters filtering
Module dedusting area removes fine particle, the flue gas of saturation state through filtering module dedusting area effect herein first accelerate afterwards slow down,
Reach hypersaturated state by adiabatic expansion, the water in flue gas is wrapped on fine particle, and particle size increased dramatically, each
The water that the second spray head 19 on filtering module dedusting area top sprays captures, and is flushed in the funnel of filtering module dedusting area.
It is further preferred that being mounted with chevron mist eliminator and wet type electricity demisting above filtering module dedusting area, it is used for
Further the water droplet in flue gas is removed.Clean flue gas after separating drop passes through the chimney 3 on top, is provided with cigarette at chimney 3
Chimney droplet separator further removes the drop in flue gas.
Above-mentioned circulated sprinkling can be by cooling high-temperature fume to water saturation state (60 DEG C or so), and the utility model can be with
It advanced optimizes, the slurries at scrubbing tower bottom is sent to spray head by circulation slurry pump and are sprayed, drawn in the tapping line of pump
Deep cooler is arranged in pipeline, by battery limit (BL) outside (20-30 DEG C) progresss depth of recirculated cooling water cool down, for improving dioxy
Change the absorption efficiency of sulfur absorbing agent.When the tight of chill zone is arranged in when worst hot case occur and running agent operating condition in upstream device failure
Urgently needed water carries out moisturizing by automatic or manual mode and is cooled down or capture a large amount of dust etc., does not influence whole system completely
Operation.
Drain processing module removes TSS by setting clarifier 22, setting oxidation tank 23 removes COD.Match for clarifier 22
Flocculation system 26 is set, the saline sewage being discharged by liquid outlet 21 is sufficiently mixed with flocculant, and minute solid particles are coalesced as
Biggish floc sedimentation carries out gravitational settling into clarifier 22.The discharge of 22 bottom of clarifier mud suspension (typically contain 15~
25% solids) filter press then is flowed to by gravity, there are more water to be removed herein.It is collected by the water that filter press flows out
In reservoir 27, filtrate pump is recycled to flow back into clarifier 22.Clarifier 22 overflows the low drain containing suspended matter and relies on
Flow by gravity is to oxidation tank 23.
Flue gas spray washing can generate part sulphite, make to contain COD in drain, the outlet of clarifier 22 setting oxidation tank
23, blender 28 is set in oxidation tank 23, is blasted air in 23 bottom of oxidation tank, is aoxidized the inferior sulfate radical in water, reduce COD.It is empty
Gas is supplied by oxidation fan.In oxidation process, to keep appropriate pH, with the pH of pH meter monitoring oxidation tank overflowing liquid, controlled with pH
Device processed controls caustic dosage by the regulating valve in alkali lye pipeline, to make pH value 7 or so.In sewage by oxidation tank 23
COD can be up to standard, and saline sewage is pumped to outside battery limit (BL) after filter is further processed.
The absorption tower 4 that sulfur dioxide absorbs part front end is made of two sections of fillers, spray head and demister, is mainly used for flue gas
Middle SO2Absorption, absorbent use amine liquid, absorb SO2Amine liquid before is poor amine liquid, is sufficiently connect with flue gas in filler part
After touch, SO is absorbed2Becoming rich amine solution flow to tower bottom later；The filler on top is that the essence that the utility model specially designs takes off section, is
Guarantee stringenter emission standards for sulfur dioxide, increase a set of circulation, has spray head above this filler, spray liquid herein is
Neutral loop slurry, in loop slurry pipeline filling lye and sulfur dioxide absorption causes pH to reduce situation, in addition herein
Slurries pump need to drain into drain processing unit.
Absorbent holding vessel 9 and control pump 10 are the main supply arrangements of 4 inner absorbent of absorption tower, and control pump 10 will absorb
Amine liquid in agent holding vessel 9 is beaten to absorption tower 4, is come into full contact with from top to bottom with upstream flue gas from filler part top.
Heat exchanger 11 is mainly used for the exchange of poor rich amine solution heat, plays the pre- heat effect before rich amine solution regeneration, both may be used
The consumption of energy when reducing regeneration, and the heat of poor amine liquid can be recycled.
Regenerator 7 is by two sections of filler parts and two layers of sprinkler composition.Rich amine solution enters in the middle part of the tower, by one section of filler,
With hot SO from bottom to top2Gas enters reboiler 12, part SO in rich amine solution after packing section comes into full contact with2It is resolved to come out,
It is discharged from tower top, until water cooler 13.
Enter reboiler 12 from the poor amine liquid after the parsing of regenerator 7 further to be parsed, heat source is low by outside offer
Press steam.Low-pressure steam condensed water after reboiler 12 enters steam condensate tank, and condensate liquid periodically passes through steam condenser pump
Regenerator reflux pump discharge is back to other systems.
Water cooler 13 is mainly used for the cooling SO for regenerating and2, cold source is cooling water, and after supercooling, condensed water is flow to
Return tank 14, SO2It is emitted into sulfur recovery facility.Condensed water is back to regenerator 7, from the filler for being located at 7 internal upper part of regenerator
It flows into from top to bottom, carries out secondary parsing, improve SO2Regeneration efficiency.
Absorbent holding vessel 9 is communicated with absorbent clean unit by several filters, amine liquid prefilter, amine liquid active carbon
Filter and amine liquid after-filter composition, filtered amine liquid enter absorbent clean unit.When the temperature of amine liquid or lye and
When conductivity is high；Or ion exchange column pressure difference it is high when, open the valve that poor amine liquid returns to absorbent holding vessel, make amine
Liquid does not enter back into absorbent clean unit.
Enter absorbent clean unit by the amine liquid of absorbent filter element to be purified.Amine liquid passes through amine liquid filter
Later, it is purified from bottom to top by ion exchange column, purified amine liquid returns to absorbent holding vessel.Then desalination is used
Water is rinsed from bottom to top after desalination water filter, and flushing water also enters absorbent holding vessel.Third step is used and is configured
Lye be rinsed, lye from top to bottom, is rinsed after lye filter into ion exchange column, and waste liquid drains into dirt
Water treatment system is finally rinsed after desalination water filter with demineralized water from top to bottom again, and flushing water is discharged into lye and matches
It sets tank and carries out lye configuration.Absorbent clean unit is as absorbent filter element.The lye for rinsing ion exchange column is tangible
4% concentration is made into alkali liquid tank.
The absorbent that sulfur dioxide absorbs uses the aqueous solution of itrogenous organic substance, referred to as amine liquid, concentration 40-50%, low
Sulphur dioxide absorbent malicious, nonflammable, that this technology uses, absorption efficiency is high, and the sulfur dioxide concentration in discharged gas fume is extremely low；
Selectivity with higher, the competition that can avoid carbon dioxide absorb.Sulfur dioxide in flue gas under the action of absorbent more
It is easy to happen hydration, ionization, to promote the dissolution of sulfur dioxide.Amine absorption agent used is renewable solvent, is disappeared
Consume it is low, trapped from flue gas the sulfur dioxide to get off again by water vapour adjust absorbent temperature, can will in desorber handle
SO2Be stripped off, sulfur dioxide product gas at concentrations up to 92.7% or more, wherein butt concentration in addition to water is higher than
99.9%.The SO trapped2For producing sulphur, minimizes secondary pollution and generate, maximize product income.
Specific case is applied in the utility model to be expounded the principles of the present invention and embodiment, it is above
The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field
As technical staff, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.To sum up
Described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. a kind of sulfur dioxide reclaiming system, it is characterised in that: including preprocessing module and sulfur dioxide recovery module；It is described pre-
Processing module includes scrubbing tower, is disposed with chill zone, filtering module dedusting area and demisting in the scrubbing tower from bottom to top
Area；The chill zone is provided with air inlet, and the mist eliminating zone includes the chimney being connected to at the top of the scrubbing tower, the chimney top
Portion is connect with the sulfur dioxide recovery module；The sulfur dioxide recovery module includes absorption tower, is arranged in the absorption tower
There is filler, the filler top is connected with regenerator by inlet tube, and the regenerator and the bottom on the absorption tower pass through out
Liquid pipe connection；Absorbent holding vessel is connected on the inlet tube, between the absorbent holding vessel and the absorption tower into
Control pump is installed in liquid pipe.
2. sulfur dioxide reclaiming system according to claim 1, it is characterised in that: the absorbent holding vessel and it is described again
Inlet tube and the outlet tube between raw tower are connected with heat exchanger.
3. sulfur dioxide reclaiming system according to claim 2, it is characterised in that: the regenerator lower end is connected with boils again
Device, the reboiler and the regenerator form circulation loop by pipeline；The reboiler is heated by outer low pressure steam.
4. sulfur dioxide reclaiming system according to claim 3, it is characterised in that: be communicated with water cooling at the top of the regenerator
Device, the water cooler are connected with return tank, and the return tank is connected to by reflux pump with the regenerator.
5. sulfur dioxide reclaiming system according to claim 4, it is characterised in that: the chill zone is provided with air inlet,
One first spray head is installed at the air inlet；The first spray head is connected by first circulation pump with the wash tower bottoms
It is logical；Filtering module dedusting area includes the Venturi tube being vertically arranged, and is equipped with second spray head above the Venturi tube, institute
It states second spray head and slurry pool is communicated with by second circulation pump, the Venturi tube is arranged on the slurry pool；Described first
Circulating pump is connected with liquid outlet.
6. sulfur dioxide reclaiming system according to claim 5, it is characterised in that: the liquid outlet is communicated with drain processing
Module；The drain module includes the clarifier being sequentially communicated, oxidation tank, surge tank and filter；The clarifier passes through wadding
Solidifying system is connect with the liquid outlet.
7. sulfur dioxide reclaiming system according to claim 6, it is characterised in that: the bottom of clarifier is connected with filters pressing
Machine, the filter press are connected with reservoir, and the reservoir is connected to by filtrate pump with the clarifier.
8. sulfur dioxide reclaiming system according to claim 7, it is characterised in that: be provided with stirring in the oxidation tank
Device；Gas access is communicated on the oxidation pot sidewall.
9. sulfur dioxide reclaiming system according to claim 8, it is characterised in that: the filler top on the absorption tower is arranged
There are spray head and demister.
10. sulfur dioxide reclaiming system according to claim 9, it is characterised in that: be provided with two sections in the regenerator
The junction of the filler being arranged above and below, the inlet tube and the regenerator is located in the regenerator between two sections of fillers.
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| CN201820549969.8U CN208287767U (en) | 2018-04-18 | 2018-04-18 | A kind of sulfur dioxide reclaiming system |
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| CN201820549969.8U CN208287767U (en) | 2018-04-18 | 2018-04-18 | A kind of sulfur dioxide reclaiming system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113134276A (en) * | 2021-03-31 | 2021-07-20 | 徐州博源科技有限公司 | Discharge pit smoke and dust purifies and control system |
| CN114452765A (en) * | 2022-02-21 | 2022-05-10 | 宁夏参进宁宇达冶金有限公司 | Silicon-manganese alloy ingot mold waste gas and foundry ladle waste gas collecting and treating process |
-
2018
- 2018-04-18 CN CN201820549969.8U patent/CN208287767U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113134276A (en) * | 2021-03-31 | 2021-07-20 | 徐州博源科技有限公司 | Discharge pit smoke and dust purifies and control system |
| CN114452765A (en) * | 2022-02-21 | 2022-05-10 | 宁夏参进宁宇达冶金有限公司 | Silicon-manganese alloy ingot mold waste gas and foundry ladle waste gas collecting and treating process |
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