CN108144388A - A kind of full-automatic dust washing control method - Google Patents
A kind of full-automatic dust washing control method Download PDFInfo
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- CN108144388A CN108144388A CN201810032405.1A CN201810032405A CN108144388A CN 108144388 A CN108144388 A CN 108144388A CN 201810032405 A CN201810032405 A CN 201810032405A CN 108144388 A CN108144388 A CN 108144388A
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- valve
- cleaning solution
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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Abstract
The invention discloses a kind of full-automatic dust washing control method, cleaning solution concentration control unit controls the opening and closing of electromagnetism-gas-driving valve, and cleaning solution temperature control unit controls the opening and closing of electromagnetism-gas-driving valve, and cleaning solution level control unit controls the opening and closing of electromagnetism-gas-driving valve.According to the technological parameter requirement of granulation tower device for recovering powder washing operation, concentration, temperature, liquid level variation to system cleaning solution different process position etc. is monitored on-line, parameter is surveyed according to it and carries out DCS centralized Controls, and realize the monitoring and control at each control point of washing system, fluid infusion, drain, temperature control system pipeline using electromagnetic type pneumatic operated valve control, its electric signal is introduced into DCS centralized Controls, and set hand stop valve, it can be achieved that manually with automatically controlling free switching in system.
Description
Technical field
The invention belongs to dust washing automation control areas, are related to high tower urea/ammonium nitrate/compound fertilizer granulating dust and return
A kind of full-automatic dust washing control device in receiving apparatus.
Background technology
Industrial dust (pernicious gas) discharge is the major reason for causing regional environment atmosphere pollution and haze weather.China
It is large agricultural country, the demand to chemical fertilizer such as agricultural, animal husbandry is huge, and chemical fertilizer production such as urea, ammonium nitrate, compound fertilizer granulating use certainly more
So ventilation or force ventilation high-tower granulation, high-tower granulation can form a large amount of material dust and be directly discharged to air with tail gas
In, these dust (pernicious gas) discharge the serious pollution for often resulting in ambient atmosphere environment.For this Industry, mostly
Wet scrubbing is used to carry out granulation tower dedusting transformation, but during dust-extraction unit wet scrubbing, since washing system controls
Substantially it is manual hand manipulation, it is impossible to accomplish to carry out the variation of cleaning solution concentration, temperature and liquid level accurate adjustment control, and
Often cleaning solution excessive concentration and cleaning solution temperature it is too low cause material dust solubility reduction cause dust washing efficiency rapid drawdown,
The variation fluctuation of cleaning solution liquid level is larger also to influence detersive efficiency, and liquid level is too low or even can cause pump idle running damage.Problem above
Long-term existence and where the reason of cause granulation tower dust-extraction unit effect general, therefore, urgent need finds a kind of technology and carrys out root
Automation control is carried out to it according to granulation tower device for recovering powder cleaning solution concentration, temperature and liquid level changing condition, to ensure
It is stablized, safe operation.
Invention content
To solve problems caused by granulation tower device for recovering powder washing system control system simply lags, the present invention
Purpose be to provide a kind of full-automatic dust washing control method, can be with high-efficient washing industrial dust.
Technical solution is as follows used by the present invention solves the above problems：
A kind of full-automatic dust washing control method, it is characterized in that cleaning solution concentration control unit controls third electromagnetic pneumatic
The opening and closing of valve, cleaning solution temperature control unit control the opening and closing of the second electromagnetism-gas-driving valve, cleaning solution level control unit control the
The opening and closing of one electromagnetism-gas-driving valve,
Cleaning solution exports from circulation fluid and is sent to washing liquid bath by recycling liquid pipeline via recycle liquid pump under normal circumstances
The circulation fluid entrance at top carries out normal dust wet scrubbing；
When cleaning solution concentration control unit detects that cleaning solution concentration is higher than setting value, DCS system control third electromagnetism
Pneumatic operated valve is opened, and instrument air is supplied by filtering pressure reducing valve for third electromagnetism-gas-driving valve, and cleaning solution exports successively from circulation fluid
Third electromagnetism-gas-driving valve is entered by drain line to the 6th shut-off valve via recycle liquid pump, the cleaning solution after adjusting is by third electricity
Magnetic pneumatic operated valve enters vapo(u)rization system through flowmeter FI and the 5th shut-off valve；In discharge opeing process, cycle liquid pipeline normal work；
6th shut-off valve and the 5th shut-off valve front and rear sides set one article of bypass conduit, and for manual switching, bypass passes through the 9th shut-off valve
Control；
When cleaning solution temperature control unit detects that cleaning solution temperature is less than limit value, DCS system control electromagnetic pneumatic
Valve is opened, and instrument air is supplied by filtering pressure reducing valve for the second electromagnetism-gas-driving valve, and low-pressure steam flows through the entrance of the 4th shut-off valve
Second electromagnetism-gas-driving valve, the low-pressure steam after adjusting enter washing by the second electromagnetism-gas-driving valve through flowmeter FI and third shut-off valve
Heating unit in liquid bath carries out heating heating to cleaning solution, and low-pressure steam is after heating unit is handled, in the form of condensate liquid
Participate in other technique workshop sections.
When cleaning solution level control unit detects that cleaning solution liquid level is less than limit value, DCS system controls the first electromagnetism
Pneumatic operated valve is opened, and instrument air is supplied by filtering pressure reducing valve for the first electromagnetism-gas-driving valve, and replenisher is followed by the 12nd section
Only valve and the second shut-off valve enter the first electromagnetism-gas-driving valve, the replenisher after adjusting by the first electromagnetism-gas-driving valve through flowmeter FI and
The replenisher entrance that first shut-off valve enters cleaning solution groove top portion carries out fluid infusion to cleaning solution；
Device in the process of running, cleaning solution concentration control unit, cleaning solution temperature control unit or cleaning solution liquid level control
Unit processed normal operation for a period of time after, if monitoring parameter still transfinites during differential pressure value, each control unit can send out alarm signal
Number, operating personnel need to carry out on-site manual processing.
Effect of the present invention
The present invention realizes the full-automatic On-line Control of dust washing device, and cleaning solution drain, fluid infusion, temperature control are opened
Accurate in time, beginning cleaning solution each technological parameter moment is in optimum state, greatly improves the detersive efficiency of dust, can be effective
Ensure the safe and reliable operation of dust washing apparatus system, improve work efficiency.Realize the control of dust washing plant automation
Running situation is more stablized, and protects equipment and extends its service life, advantageously reduces production cost, improve enterprise
Field management is horizontal.
Description of the drawings
Fig. 1 is one kind in full-automatic dust washing control device structural member figure.
In figure：Cleaning solution concentration control unit 1, cleaning solution temperature control unit 2, cleaning solution level control unit 3, washing
Liquid bath 4, recycle liquid pump 5, circulation fluid outlet 6, circulation fluid entrance 7, replenisher entrance 8, the first shut-off valve 9, the second shut-off valve 11,
Third shut-off valve 12, the 4th shut-off valve 14, the 5th shut-off valve 15, the 6th shut-off valve 17, the 7th shut-off valve 18, the 8th shut-off valve
19th, the 9th shut-off valve 20, the tenth shut-off valve 21, the 11st shut-off valve 22, the 12nd shut-off valve 26, the first electromagnetism-gas-driving valve
10th, the second electromagnetism-gas-driving valve 13, third electromagnetism-gas-driving valve 16, low-pressure steam 23, heating unit 24, condensate liquid 25, filtering decompression
Valve 27, replenisher 28, instrument air 29, drain line 30, cycle liquid pipeline 31, vapo(u)rization system 32.
Specific embodiment
It is illustrated with reference to Fig. 1：A kind of full-automatic dust washing control device, including washing liquid bath 4, recycle liquid pump 5, mistake
Filter pressure reducing valve 27, instrument air 29 are further included by cleaning solution concentration control unit 1, the cut-off of third electromagnetism-gas-driving valve 16 and the 5th
The drainage system that valve 15, the 6th shut-off valve 17, the 9th shut-off valve 20 form；By cleaning solution temperature control unit 2, the second electromagnetism gas
The heating system that dynamic valve 13 and third shut-off valve 12, the 4th shut-off valve 14, the 8th shut-off valve 19 form；By cleaning solution Liquid level
The fluid infusion system that unit 3, the first electromagnetism-gas-driving valve 10 and the first shut-off valve 9, the second shut-off valve 11, the 7th shut-off valve 18 form；
Wherein cleaning solution concentration control unit 1 controls the opening and closing of third electromagnetism-gas-driving valve 16, the control of cleaning solution temperature control unit 2 second
The opening and closing of electromagnetism-gas-driving valve 13, cleaning solution level control unit 3 control the opening and closing of the first electromagnetism-gas-driving valve 10；In washing liquid bath 4
Interior to be equipped with heating unit 24, heating unit 24 is connect with heating system；Recycle liquid pump 5 is connect with washing liquid bath 4.
According to the technological parameter requirement of granulation tower device for recovering powder washing operation, to system cleaning solution different process position
Concentration, temperature, liquid level variation etc. monitored on-line, according to its survey parameter carry out DCS centralized Controls, and realize washing be
Unite the monitoring and control at each control point, fluid infusion, drain, temperature control system pipeline controlled using electromagnetic type pneumatic operated valve, by it
Electric signal introduces DCS centralized Controls, and sets hand stop valve, it can be achieved that manually with automatically controlling free switching in system.
When the cleaning solution concentration of system is more than process set value, drainage system automatically turns on, to being washed in washing liquid bath 4
Liquid is discharged, and after cleaning solution concentration is less than setting value, drainage system is automatically closed.
When the cleaning solution temperature of system is less than process set value, heating system automatically turns on, to being washed in washing liquid bath 4
Liquid heats up, and after cleaning solution temperature is higher than setting value, heating system is automatically closed.
When the cleaning solution liquid level of system is less than process set value, fluid infusion system automatically turns on, to being washed in washing liquid bath 4
Liquid carries out fluid infusion, and after cleaning solution liquid level is higher than setting value, fluid infusion system is automatically closed.
All instrument airs 29, which all have passed through, is filtered under diminished pressure the filtering of valve 27 to ensure first the 10, second electricity of electromagnetism-gas-driving valve
The normal operation of magnetic pneumatic operated valve 13, third electromagnetism-gas-driving valve 16.Wherein the first electromagnetism-gas-driving valve 10, the second electromagnetism-gas-driving valve 13,
The first shut-off valve 9, the second shut-off valve 11, third shut-off valve 12, the 4th shut-off valve the 14, the 5th before and after third electromagnetism-gas-driving valve 16
Shut-off valve 15, the 6th shut-off valve 17 are control manually, it is ensured that field instrument and pneumatic operated valve are replaced in time when breaking down
And processing, it ensure that reliability of operation.
First electromagnetism-gas-driving valve 10, the second electromagnetism-gas-driving valve 13,16 front and rear sides of third electromagnetism-gas-driving valve set a side
Road pipeline is used for manual switching, and bypass is controlled by shut-off valve, it is ensured that when robot control system(RCS) breaks down, by manual switching extremely
Bypass conduit ensures the normal operation of system.
First shut-off valve 9, the second shut-off valve 11, third shut-off valve 12, the 4th shut-off valve 14, the 5th shut-off valve the 15, the 6th
Shut-off valve 17, the tenth shut-off valve 21, the 11st shut-off valve 22, the 12nd shut-off valve 26 maintain a normally open state.7th shut-off valve
18th, the 8th shut-off valve 19, the 9th shut-off valve 20 remain off.
There is pressure display table before the 4th shut-off valve 14, the 11st shut-off valve 22 is housed before pressure display table.
Pressure display meter PG is equipped on 28 pipeline of 23 pipeline of low-pressure steam and replenisher, for monitoring process medium, is protected
Card device even running.
Outer row's high concentration cleaning solution is discharged to vapo(u)rization system 32 or other technique workshop sections via pipeline.
Low-pressure steam 23 participates in other technique workshop sections after the processing of heating unit 24 in the form of condensate liquid 25.
Claims (1)
1. a kind of full-automatic dust washing control method, it is characterized in that cleaning solution concentration control unit (1) controls third electromagnetism gas
The opening and closing of dynamic valve (16), cleaning solution temperature control unit (2) control the opening and closing of the second electromagnetism-gas-driving valve (13), cleaning solution liquid level control
Unit (3) processed controls the opening and closing of the first electromagnetism-gas-driving valve (10)；
Cleaning solution is sent to by recycling liquid pipeline (31) via recycle liquid pump (5) from circulation fluid outlet (6) and washed under normal circumstances
It washs the circulation fluid entrance (7) at the top of liquid bath (4) and carries out normal dust wet scrubbing；
When cleaning solution concentration control unit (1) detects that cleaning solution concentration is higher than setting value, DCS system control third electromagnetism gas
Dynamic valve (16) is opened, and instrument air (29) is third electromagnetism-gas-driving valve (16) gas supply by filtering pressure reducing valve (27), cleaning solution according to
It is secondary from circulation fluid outlet (6) via recycle liquid pump (5) by drain line (30) to the 6th shut-off valve (17) into third electromagnetism
Pneumatic operated valve (16), the cleaning solution after adjusting is entered by third electromagnetism-gas-driving valve (16) through flowmeter FI and the 5th shut-off valve (15) to be steamed
Hair system (32)；In discharge opeing process, cycle liquid pipeline (31) works normally；In the 6th shut-off valve (17) and the 5th shut-off valve
(15) front and rear sides set a bypass conduit to bypass and controlled by the 9th shut-off valve (20) for manual switching；
When cleaning solution temperature control unit (2) detects that cleaning solution temperature is less than limit value, DCS system control electromagnetism-gas-driving valve
(13) it opens, instrument air (29) is supplied by filtering pressure reducing valve (27) for the second electromagnetism-gas-driving valve (13), low-pressure steam (23)
The 4th shut-off valve (14) is flowed through into the second electromagnetism-gas-driving valve (13), the low-pressure steam (23) after adjusting is by the second electromagnetism-gas-driving valve
(13) heating unit (24) entered in washing liquid bath (4) through flowmeter FI and third shut-off valve (12) heats up to cleaning solution
Heating, low-pressure steam (23) participate in other technique workshop sections after heating unit (24) processing in the form of condensate liquid (25)；
When cleaning solution level control unit (3) detects that cleaning solution liquid level is less than limit value, DCS system controls the first electromagnetism gas
Dynamic valve (10) is opened, and instrument air (29) is supplied by filtering pressure reducing valve (27) for the first electromagnetism-gas-driving valve (10), replenisher
(28) followed by the 12nd shut-off valve (26) and the second shut-off valve (11) into the first electromagnetism-gas-driving valve (10), the benefit after adjusting
Filling liquid is entered the replenisher at the top of washing liquid bath (4) by the first electromagnetism-gas-driving valve (10) through flowmeter FI and the first shut-off valve (9)
Entrance (8) carries out fluid infusion to cleaning solution；
Device in the process of running, cleaning solution concentration control unit (1), cleaning solution temperature control unit (2) or cleaning solution liquid level
Control unit (3) normal operation for a period of time after, if monitoring parameter still transfinites during differential pressure value, each control unit can send out report
Alert signal, operating personnel need to carry out on-site manual processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810032405.1A CN108144388A (en) | 2018-01-12 | 2018-01-12 | A kind of full-automatic dust washing control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810032405.1A CN108144388A (en) | 2018-01-12 | 2018-01-12 | A kind of full-automatic dust washing control method |
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| Publication Number | Publication Date |
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| CN108144388A true CN108144388A (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810032405.1A Pending CN108144388A (en) | 2018-01-12 | 2018-01-12 | A kind of full-automatic dust washing control method |
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Application publication date: 20180612 |