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CN202410487U - Tail gas absorption system for edible oil and fat extracting workshop - Google Patents

Tail gas absorption system for edible oil and fat extracting workshop Download PDF

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Publication number
CN202410487U
CN202410487U CN2012200078178U CN201220007817U CN202410487U CN 202410487 U CN202410487 U CN 202410487U CN 2012200078178 U CN2012200078178 U CN 2012200078178U CN 201220007817 U CN201220007817 U CN 201220007817U CN 202410487 U CN202410487 U CN 202410487U
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CN
China
Prior art keywords
solvent
tail gas
water
outlet
water tank
Prior art date
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Expired - Lifetime
Application number
CN2012200078178U
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Chinese (zh)
Inventor
马志强
曾凡中
叶志刚
徐晓红
王健
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taicang Baoma Oils & Fats Equipment Co Ltd
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Taicang Baoma Oils & Fats Equipment Co Ltd
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Priority to CN2012200078178U priority Critical patent/CN202410487U/en
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Publication of CN202410487U publication Critical patent/CN202410487U/en
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Abstract

The utility model discloses a tail gas absorption system for an edible oil and fat extracting workshop, and the tail gas absorption comprises an absorption tower, a balance tank, a water jet pump, a centrifugal pump, a solvent pump and a solvent tank, wherein the absorption tower comprises a tower body and an absorption section; the lower part of the tower body is provided with a water tank capable of bearing a pressure; the absorption section is located above the water tank and is communicated with the top of the water tank; an exhaust port is arranged at the top of the tower body; the lower part of the water tank is provided with a feed inlet, a water outlet and a solvent outlet; the centrifugal pump is communicated with the water outlet and the inlet of the water jet pump; the balance tank is provided with a tail gas inlet and a gas outlet; the centrifugal pump is used for pumping water from a tank body to be used by the water jet pump; the outlet of the water jet pump is communicated with the feed inlet; and the solvent pump is communicated with the solvent outlet and the solvent tank and used for pumping solvents in the water tank into the solvent tank. When a tail gas is absorbed by using the tail gas absorption system for the edible oil and fat extracting workshop, the absorption effect is good, and the solvent consumption amount can be reduced to be less than 0.8kg per ton of raw materials.

Description

A kind of edible oil and fat leach the workshop and use the tail gas absorption system
Technical field
the utility model relates to a kind of tail gas absorption system that leaches the workshop use at edible oil and fat.
Background technology
are known; Leach in the Workshop Production process at edible oil and fat; The oil plant that leaches is the pre-pressed cake of oil plant, the green compact of oil plant or the swelling granular of oil plant, because these oil plants have the certain gap rate, when getting into the leaching system, brings air in certain amount always into; All there is live (open) steam to spray into when miscella stripping and wet dregs of rice precipitation, will brings portion of air equally into and get in the leaching system; And because each equipment sealing is bad, particularly negative pressure evaporation technology also has a spot of air to get into.These air contact with solvent, and the solvent gas molecule of volatilization is arranged, and this type gas molecule makes the saturation of the air; Form solvent-laden air; Be called free gas to this gas, be also referred to as tail gas, the device that this gas is handled or reclaimed is called the tail gas absorption system.This partly gas device institute condensation that can not be condensed, long-term aggregated can increase the pressure in the container, if untimely discharge will influence carrying out smoothly of production, even can cause the generation of peril.Simultaneously, be mixed with a large amount of solvents in this part gas,, not only can increase and dissolve consumption, increase cost, and pollute the environment like direct discharging, so, before the tail gas emptying, must solvent wherein be reclaimed.
are known by above-mentioned, in the air that leaches each equipment discharge of workshop, are contained the solvent vapo(u)r of some all the time.The content of solvent vapo(u)r in free gas depends on the temperature of the composition and the condenser of solvent cut.At present, three kinds of methods are roughly arranged: adopt the freezing recovery method of refrigerant, utilize paraffin oil, vegetable oil ahsorption recovering method (liquid-absorbent) and utilize charcoal absorption recovery method (solid absorption) to the solvent recovery in the free gas.The selection of these methods has restriction, depends on the concentration of solvent vapo(u)r in free gas, and freezing reclaims and is applied to solvent steam concentration is 170~250g/m 3 The time solvent recovery; Paraffin oil or vegetable oil reclaim and are applied to solvent steam concentration 140~170g/m 3 The time solvent recovery; Active carbon reclaims and is applied to solvent steam concentration is 50~140g/m 3 The time solvent recovery, if solvent strength surpasses these scopes, then the effect of lyosoption will be had a greatly reduced quality.In these three kinds of methods, the utilization of paraffin oil ahsorption recovering method is maximum.
No matter take any in above-mentioned three kinds of modes; Tail gas absorber all is absolutely necessary; And present tail gas absorber generally is arranged on air extractor the exhaust ports on absorption tower, is negative pressure state in the absorption tower, and assimilation effect is bad.Because solvent is the one of the main reasons that edible oil and fat leach the solvent consumption in workshop in the tail gas; If assimilation effect is bad; With the consumption that enlarges markedly solvent (adopting the solvent-oil ratio of existing various tail gas absorption system and method to reach 1.5~2.5kg/ (t raw material)); In today of market competition ten minutes fierceness, this has caused very big cost pressure and environmental protection pressure for grease processing enterprise.
Summary of the invention
the utility model technical problem to be solved is the deficiency that overcomes prior art, provides a kind of improved edible oil and fat to leach the workshop and uses the tail gas absorption system.
For solving above technical problem, the utility model is taked following technical scheme:
a kind of edible oil and fat leach the workshop and use the tail gas absorption system; It comprises the absorption tower, and this absorption tower comprises tower body and be arranged in the tower body, contains the absorber portion of absorbent, the bottom of tower body be can pressure-bearing water tank; Absorber portion is positioned at the water tank top; And be communicated with the top of water tank, tower body is provided with exhaust outlet at the top, is provided with charging aperture, discharge outlet and solvent outlet in the bottom of water tank; Said tail gas absorption system also comprises compensator, water stream injection pump, the centrifugal pump, solvent pump and the solvent tank that are communicated with the inlet of discharge outlet and water stream injection pump; Wherein: compensator has gas inlet that is communicated with the condenser system in edible oil and fat leaching workshop and the gas vent that is communicated with water stream injection pump, and said centrifugal pump is used in casing, extracting water and supplies said water stream injection pump to use, and the outlet of water stream injection pump is communicated with charging aperture; Solvent pump is communicated with solvent outlet and solvent tank, is used for the solvent of water tank is evacuated in the solvent tank.
are according to a preferred aspect of the utility model; Said absorber portion is divided into 3~5 layers of absorbed layer; Remain with the absorbent that liquid level is 0.2~0.5m on each layer absorbed layer, and the tower body at each layer absorbed layer place is provided with the absorbent outlet.Described absorbent can be water, paraffin oil or plant wet goods.Also be provided with the absorbent inlet at the top of tower body.
preferably, the diameter of said water tank is greater than the diameter of the tower body at absorber portion place.
preferably; Be provided with two upright dividing plates in the described water tank; These two dividing plates are divided into three chambers that the top is connected with water tank, wherein, the chamber in the middle of being positioned at be positioned at absorber portion under; Discharge outlet is positioned at the bottom of medial compartment, and charging aperture and solvent outlet lay respectively at the following side of the chamber of both sides.More preferably, the width of the chamber of said centre is more than or equal to the diameter of the tower body at absorber portion place.
Because the utilization of technique scheme, the utility model compared with prior art has following advantage:
the utility model adopts water stream injection pump as air extractor; And utilize water in the water tank to be arranged on the charging aperture on absorption tower as the working fluid of water stream injection pump and with water stream injection pump; On the one hand, be barotropic state in the tower body, strengthened the assimilation effect of absorbent solvent; On the other hand, centrifugal pump is extracted water out from water tank and is thrown jet pump into, and water tank receives the gas-liquid mixture of water stream injection pump discharging simultaneously; Water recycles in closed environment as the working media of bleeding, and constantly throws gas-liquid mixture in the water tank into, and gas constantly increases; And be compressed, be barotropic state therefore, water absorbs the solvent in the gas as absorbent; And pressurization has increased the solubility of solvent in water, and assimilation effect improves.The water tank of the utility model is as the space of the gas-liquid mixture that receives the water stream injection pump supply, and is provided with solvent outlet and solvent pump, as long as make water tank obtain enough spatial volumes, can let solvent and separated form water, and pumps to solvent tank through solvent pump.Gas pressure is enough big when the tank top space, can upwards pass through absorber portion, at last from the exhaust outlet emptying.After absorbing completion, the absorbent in the absorber portion goes Analytic Tower to resolve.Adopt the utility model device to carry out tail gas and absorb, solvent-oil ratio can be reduced to below the 0.8kg/ (t raw material).
Description of drawings
Below in conjunction with specific embodiment the utility model is done further detailed explanation:
Fig. 1 carries out the sketch map that tail gas absorbs for the tail gas absorption system that adopts the utility model;
Fig. 2 looks sketch map for the master according to the absorption tower of the utility model;
Fig. 3 be among Fig. 2 A-A to sketch map;
Fig. 4 be among Fig. 2 B-B to sketch map;
wherein: 1, absorption tower; 10, tower body; 100, water tank; 100a, charging aperture; 100b, discharge outlet; 100c, solvent outlet; 101, exhaust outlet; 102, dividing plate; 11, absorber portion; 110, absorbed layer; 111, absorbent outlet; 112, absorbent inlet; 2, compensator; 20, gas inlet; 21, gas vent; 3, water stream injection pump; 4, centrifugal pump; 5, solvent pump.
The specific embodiment
are done further detailed explanation below in conjunction with specific embodiment to the utility model, but the utility model is not limited to this embodiment.
are leached the workshop according to the edible oil and fat of present embodiment and are mainly comprised absorption tower 1, compensator 2, water stream injection pump 3, centrifugal pump 4 and solvent pump 5 with the tail gas absorption system shown in Fig. 1 to 4.Absorption tower 1 comprises tower body 10 and is arranged in the tower body 10, contains the absorber portion 11 of absorbent, the bottom of tower body 10 be can pressure-bearing water tank 100.In water tank 100, be provided with two upright dividing plates 102; These two dividing plates 102 are divided into three chambers that the top is connected with water tank 100; Wherein, Chamber in the middle of being positioned at be positioned at absorber portion 11 under, be provided with discharge outlet 100b in the bottom of this chamber, be provided with charging aperture 100a and solvent outlet 100c respectively in the following side of the chamber of both sides.Centrifugal pump 4 is arranged between the discharge outlet 100b of inlet and water tank 100 of water stream injection pump 3; Be used for the water in the water tank 100 is extracted to the working fluid of water stream injection pump 3 as water stream injection pump 3; And the outlet of water stream injection pump 3 is communicated with the charging aperture 100a of water tank 100; Solvent outlet 100c place is connected with solvent pump 5, and it is arranged so that when this indoor solvent reaches certain liquid level solvent pump 5 startup automatically pumps solvent to solvent tank.
In this example, absorber portion 11 is divided into 5 layers of absorbed layer 110, remains with the absorbent that liquid level is 0.2~0.5m on each layer absorbed layer 110, and the tower body 10 at each layer absorbed layer 110 places is provided with absorbent outlet 111.Absorbent can be water, paraffin oil or plant wet goods.Also be provided with absorbent inlet 112 and exhaust outlet 101 at the top of tower body 10.
are as shown in Figure 1; The utility model operation principle is following: from the tail gas that the last condenser of condenser system comes, extracted out by water stream injection pump 3, make condenser system keep negative pressure state (gauge pressure-0.02MPa); Extract out in tail gas to the compensator 2 and cushion; Compensator gauge pressure-0.06MPa forms gas-liquid mixture by water stream injection pump 3 absorptions then, and this mixture is in the charging aperture 100a of water tank 100 row inlet water tank 100; The water that the water that water stream injection pump 3 uses is extracted in the water tank 100 by centrifugal pump 4, so water is in closed environment, to recycle.Because gas-liquid mixture is constantly arranged inlet water tank 100, the gas that water tank 100 tops are gathered is compressed, and the pressure of water tank 100 is raise, the about gauge pressure 0.01~0.02MPa of pressure, and the partial solvent in the gas is soluble in water.It above the absorption tower water tank 100 absorber portion 11; After the gas pressure that gathers in the water tank 100 surpasses the pressure of absorber portion 11 fluid columns; Gas is just automatically broken through each layer absorbent fluid-tight of absorber portion 11 from bottom to top, until through top vent 101 emptyings, in this process; Gas fully contacts with the absorbent of absorber portion 11, absorbs the solvent in the gas.Meanwhile, because casing 100 has enough spatial volumes and makes solvent and separated form water, the partial solvent in the tail gas can directly reclaim from solvent outlet 100c under the effect of solvent pump 5.
The utility model compared with prior art, main feature is following:
(1), the utility model are arranged on the charging aperture on absorption tower with air extractor, and making in the absorption tower is barotropic state, has strengthened assimilation effect.Air-extractor moves on to the air inlet end from the gas outlet end on absorption tower, the bottom, absorption tower be can pressure-bearing water tank, be divided into three chambers by dividing plate under the water tank; Tank top is gathered gas, and the top links to each other with the absorber portion on top, and centrifugal pump is extracted water out from water tank and thrown jet pump into; Water tank receives the water stream injection pump exhaust mixture simultaneously, and water recycles in closed environment as the working media of bleeding, and constantly throws gas-liquid mixture in the water tank into; Gas constantly increases, and is compressed, and is barotropic state therefore; Water absorbs the solvent in the gas as absorbent, and pressurization has increased the solubility of solvent in water, improves assimilation effect like this.
(2), the absorption tower structure is improved design; Basecoat (being water tank) magnifying diameter and height; Space as the mixture that receives the air-extractor discharging; And enough spatial volumes are arranged by solvent and separated form water, when the solvent of separation treated that liquid level rises to predetermined altitude, solvent pump startup automatically was evacuated to diversion box.Therefore the basecoat water tank can pressure-bearing, should be able to bear 0.01~0.02MPa pressure.Gas pressure is enough big when the tank top space, can make progress successively to pass through the absorbent liquid layer liquid layer total height 0.9~1.5m, last emptying.The pressure of press-bearing water tank is that the absorbent fluid column in the absorber portion that relies on above it is kept.
to sum up adopt the utility model device to carry out after tail gas absorbs, and solvent-oil ratio can be reduced to below the 0.8kg/ (t raw material).Be beneficial to the production cost and raising enterprise competitiveness that reduce grease processing enterprise.
the foregoing description is only for explaining the technical conceive and the characteristics of the utility model; Its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection domain of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the utility model

Claims (7)

1. edible oil and fat leach the workshop and use the tail gas absorption system; Comprise absorption tower (1); It is characterized in that: said absorption tower (1) comprises tower body (10) and is arranged on the absorber portion (11) that said tower body (10) is interior, contain absorbent; The bottom of said tower body (10) be can pressure-bearing water tank (100); Described absorber portion (11) is positioned at said water tank (100) top; And be communicated with the top of said water tank (100); Said tower body (10) is provided with exhaust outlet (101) at the top; Be provided with charging aperture (100a), discharge outlet (100b) and solvent outlet (100c) in the bottom of said water tank (100), described tail gas absorption system also comprises compensator (2), water stream injection pump (3), the centrifugal pump (4), solvent pump (5) and the solvent tank that are communicated with the inlet of described discharge outlet (100b) and described water stream injection pump (3), and wherein: compensator (2) has with said edible oil and fat and leaches gas inlet (20) that the condenser system in workshop is communicated with and the gas vent (21) that is communicated with said water stream injection pump (3); Said centrifugal pump (4) is used in said casing (1), extracting water and supplies said water stream injection pump (3) to use; The outlet of said water stream injection pump (3) is communicated with described charging aperture (100a), and described solvent pump (5) is communicated with said solvent outlet (100c) and said solvent tank, is used for the solvent of water tank (1) is evacuated in the said solvent tank.
2. edible oil and fat according to claim 1 leach the workshop and use the tail gas absorption system; It is characterized in that: said absorber portion (11) is divided into 3~5 layers of absorbed layer (110); Remain with the absorbent that liquid level is 0.2~0.5m on each layer absorbed layer (110), and the tower body (10) at each layer absorbed layer (110) place is provided with absorbent outlet (111).
3. edible oil and fat according to claim 2 leach the workshop and use the tail gas absorption system, and it is characterized in that: described absorbent is water, paraffin oil or vegetable oil.
4. use the tail gas absorption system according to claim 1 or 2 or 3 described edible oil and fat leaching workshops, it is characterized in that: the top of described tower body (10) also is provided with absorbent inlet (112).
5. edible oil and fat according to claim 1 leach the workshop and use the tail gas absorption system, it is characterized in that: the diameter of the tower body (10) that the diameter of said water tank (100) is located greater than said absorber portion (11).
6. edible oil and fat according to claim 5 leach the workshop and use the tail gas absorption system; It is characterized in that: be provided with two upright dividing plates (102) in the described water tank (100); These two dividing plates (102) are divided into three chambers that the top is connected with said water tank (100); Wherein, Chamber in the middle of being positioned at be positioned at said absorber portion (11) under, said discharge outlet (100b) is positioned at the bottom of medial compartment, said charging aperture (100a) and solvent outlet (100c) lay respectively at the following side of the chamber of both sides.
7. edible oil and fat according to claim 6 leach the workshop and use the tail gas absorption system, it is characterized in that: the diameter of the tower body (10) that the width of the chamber of said centre is located more than or equal to said absorber portion (11).
CN2012200078178U 2012-01-10 2012-01-10 Tail gas absorption system for edible oil and fat extracting workshop Expired - Lifetime CN202410487U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200078178U CN202410487U (en) 2012-01-10 2012-01-10 Tail gas absorption system for edible oil and fat extracting workshop

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Application Number Priority Date Filing Date Title
CN2012200078178U CN202410487U (en) 2012-01-10 2012-01-10 Tail gas absorption system for edible oil and fat extracting workshop

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102512912A (en) * 2012-01-10 2012-06-27 太仓市宝马油脂设备有限公司 Tail gas absorbing system and tail gas absorbing method for edible fat leaching workshop
CN112221306A (en) * 2020-07-31 2021-01-15 扬州海通电子科技有限公司 Plate tower absorption acid making device and method for starch factory

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102512912A (en) * 2012-01-10 2012-06-27 太仓市宝马油脂设备有限公司 Tail gas absorbing system and tail gas absorbing method for edible fat leaching workshop
CN102512912B (en) * 2012-01-10 2013-08-07 太仓市宝马油脂设备有限公司 Exhaust absorbing system and exhaust absorbing method for edible fat leaching workshop
CN112221306A (en) * 2020-07-31 2021-01-15 扬州海通电子科技有限公司 Plate tower absorption acid making device and method for starch factory

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CX01 Expiry of patent term

Granted publication date: 20120905

CX01 Expiry of patent term