CN103304044B - Technique for cyclic treatment of coal gasification slag water - Google Patents
Technique for cyclic treatment of coal gasification slag water Download PDFInfo
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- CN103304044B CN103304044B CN201310226265.9A CN201310226265A CN103304044B CN 103304044 B CN103304044 B CN 103304044B CN 201310226265 A CN201310226265 A CN 201310226265A CN 103304044 B CN103304044 B CN 103304044B
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Abstract
The invention discloses a technique for cyclic treatment of coal gasification slag water. The technique is characterized by comprising the steps of: putting amino trimethylene phosphonic acid, hydroxyethylidene-1,1-diphosphonic acid, 2-phosphonic acid-1,2,4-tri-carboxyl butane, maleic anhydride copolymer, acrylic acid/propene sulfonic acid/phosphinic acid copolymer and the like into a sealed or pressure container; controlling the reaction temperature and controlling pressure until complete dissolution is achieved under an agitation condition to obtain a colorless or amber dirt dispersion agent; and applying the prepared dirt dispersion agent of a slag water system to gas slag water system to carry out water treatment. By adopting the technique of feeding the dirt dispersing agent at a plurality of points, such as a lye tank and a lye pump inlet, the dosing concentration is controlled to 50-200 mg/L; the scale inhibiting ratio of the dirt dispersing agent of the slag water system is improved to 75-95% when the temperature is 50-200 DEG C.
Description
Technical field:
The invention belongs to gasification pulp water system water treatment technology, be specifically related to a kind of processing method of circular treatment gasification pulp water.Comprising preparation and the scale inhibition dispersion treatment processing method of dirt dispersion agent to gasification pulp water of dirt dispersion agent.
Background technology
Coal Gasification Technology is the basis of the process industrials such as coal-based chemicals, Coal-based Liquid Fuel, integrated coal gasification combined cycle, Poly-generation; It is the key common technology in clean coal technology field; Having efficient, super clean feature, is the main flow of world today's coal technical development.In Coal Gasification Technology, especially with air-flow bed coal-gasification technology, compare suitability for mass industrialized production.
Since Texaco's first set Coal-water Slurry Pressurized Gasification Unit is since Unit at Lunan Chemical Fertilizer Plant start-of-run, recently domestic having gone up successively again overlapped the type device more the more than ten years ten, and all obtained successfully.External gasification is mainly for the production of fuel gas and circulating generation, it is not strict especially that purified synthesis gas is required, pulp water is processed also relatively simple, domestic synthetic gas is mainly as the unstripped gas of Chemicals, the dustiness of synthetic gas is required strict, therefore gasification pulp water system is an important technical links, pulp water system operation normally whether, can directly affect whole system long period safe and stable operation.For such domestic each factory of device, at pulp water system aspects, through continuous, reform, transform, pulp water system has been moved more stablely, but still exists many problems.Except the transformation of processing unit, adding dirt dispersion agent is one of effective way guaranteeing gasification pulp water system long-period stable operation.
Due to the impact of the factors such as ature of coal, environment, in the water quality of gasification pulp water system, suspended substance, basicity and hardness constantly raise at present, and the requirement of dirt dispersion agent is also constantly raise.Therefore developing a kind of high efficiency dirt dispersion agent is the inexorable trend that guarantees gasification pulp water system long-period stable operation for gasification pulp water circular treatment.
Summary of the invention
The present invention is a kind of processing method of circular treatment gasification pulp water, it is characterized in that:
1) preparation of pulp water system dirt dispersion agent:
The Amino Trimethylene Phosphonic Acid 1% ~ 10% that described pulp water system dirt dispersion agent contains mass percent, hydroxy ethylene diphosphonic acid 1% ~ 8%, 2-phosphonate group-1, 2, 4-tri carboxyl butane 1% ~ 20%, mol ratio is the iso-butylene/copolymer-maleic anhydride 2% ~ 10% of 1:0.3 ~ 0.6, mol ratio is vinylformic acid/2-methyl-2-acrylamido propanesulfonic acid/MALEIC ANHYDRIDE/2-hydroxyl-2-phosphoryl acetic acid tetrapolymer 10%～60% of 3 ~ 4:1:2:1, mol ratio is maleic anhydride/vinylformic acid/propene sulfonic acid copolymer 1 0%～50% of 1:2 ~ 3:1, mol ratio is vinylformic acid/propene sulfonic acid/ortho phosphorous acid copolymer 1 %～30% of 2 ~ 3:2:1, poly-epoxy succinic acid 0.5%～40%, surplus is water.
Concrete preparation process is as follows: by Amino Trimethylene Phosphonic Acid, hydroxy ethylene diphosphonic acid, 2-phosphonate group-1, 2, 4-tri carboxyl butane, iso-butylene/copolymer-maleic anhydride, vinylformic acid/2-methyl-2-acrylamido propanesulfonic acid/MALEIC ANHYDRIDE/2-hydroxyl-2-phosphoryl acetic acid tetrapolymer, maleic anhydride/vinylformic acid/propene sulfonic acid multipolymer, vinylformic acid/propene sulfonic acid/ortho phosphorous acid multipolymer, poly-epoxy succinic acid, deionized water, be placed in airtight or pressurized vessel, under agitation condition, the condition and range of controlling temperature of reaction is 40 ℃～70 ℃, control pressure is 0.1 Mpa, stir to dissolving completely, obtain colourless or amber dirt dispersion agent,
2) processing method of circular treatment gasification pulp water:
The pulp water system dirt dispersion agent of preparation is applied to gasification pulp water system water treatment process method; Described dirt dispersion agent is applied to the water system of gasification high rigidity, high alkalinity, high pressure-temperature, high suspended matter; By locate multi-point adding dirt dispersion agent technique at ash water tank, grey pump entrance etc., controlling adding consistency is 50 ~ 200 mg/L, and its beneficial effect is:
At 50 ℃ ~ 200 ℃ temperature, effectively suppress the deposition fouling situation of ash water system, pulp water system dirt dispersion agent scale inhibition performance is 75% ~ 95%, gasification system chilling ring, chilled water pipeline, Heisui River pipeline, Venturi, carbon are washed the key position fouling tendencies such as tower and are obviously alleviated, realize gasification pulp water system stable operation, realized the classification utilization of system multiply water resources simultaneously, optimize enterprise's water resources control, reduce in a large number the outer water displacement of system, realized industry energy conservation and reduced discharging target.
According to treatment process method of the present invention, it is further characterized in that:
The preparation of pulp water system dirt dispersion agent:
The Amino Trimethylene Phosphonic Acid 2% ~ 8% that described pulp water system dirt dispersion agent contains mass percent, hydroxy ethylene diphosphonic acid 1% ~ 5%, 2-phosphonate group-1, 2, 4-tri carboxyl butane 2% ~ 15%, mol ratio is the iso-butylene/copolymer-maleic anhydride 3% ~ 10% of 1:0.3 ~ 0.6, mol ratio is vinylformic acid/2-methyl-2-acrylamido propanesulfonic acid/MALEIC ANHYDRIDE/2-hydroxyl-2-phosphoryl acetic acid tetrapolymer 10%～50% of 3 ~ 4:1:2:1, mol ratio is maleic anhydride/vinylformic acid/propene sulfonic acid multipolymer 20%～45% of 1:2 ~ 3:1, mol ratio is vinylformic acid/propene sulfonic acid/ortho phosphorous acid multipolymer 5%～25% of 2 ~ 3:2:1, poly-epoxy succinic acid 0.5%～30%, surplus is water.
Concrete preparation process is as follows: by Amino Trimethylene Phosphonic Acid, hydroxy ethylene diphosphonic acid, 2-phosphonate group-1, 2, 4-tri carboxyl butane, iso-butylene/copolymer-maleic anhydride, vinylformic acid/2-methyl-2-acrylamido propanesulfonic acid/MALEIC ANHYDRIDE/2-hydroxyl-2-phosphoryl acetic acid tetrapolymer, maleic anhydride/vinylformic acid/propene sulfonic acid multipolymer, vinylformic acid/propene sulfonic acid/ortho phosphorous acid multipolymer, poly-epoxy succinic acid, deionized water, be placed in airtight or pressurized vessel, under agitation condition, the condition and range of controlling temperature of reaction is 40 ℃～60 ℃, control pressure is 0.1 Mpa, stir to dissolving completely, obtain colourless or amber dirt dispersion agent.
Embodiment
Embodiment 1
By following mass ratio, configure high efficiency dirt dispersion agent:
By Amino Trimethylene Phosphonic Acid 4%, hydroxy ethylene diphosphonic acid 5%, 2-phosphonate group-1, 2, 4-tri carboxyl butane 10%, mol ratio is the iso-butylene/copolymer-maleic anhydride 4% of 1:0.3 ~ 0.6, mol ratio is vinylformic acid/2-methyl-2-acrylamido propanesulfonic acid/MALEIC ANHYDRIDE/2-hydroxyl-2-phosphoryl acetic acid tetrapolymer 16% of 3 ~ 4:1:2:1, mol ratio is maleic anhydride/vinylformic acid/propene sulfonic acid multipolymer 25% of 1:2 ~ 3:1, mol ratio is vinylformic acid/propene sulfonic acid/ortho phosphorous acid multipolymer 5% of 2 ~ 3:2:1, poly-epoxy succinic acid 10%, deionized water 21%, be placed in airtight or pressurized vessel, under agitation condition, the condition and range of controlling temperature of reaction is 50 ℃, control pressure is 0.1Mpa, stir to dissolving completely, obtain colourless or amber dirt dispersion agent.
Embodiment 2
By following mass ratio, configure high efficiency dirt dispersion agent:
By Amino Trimethylene Phosphonic Acid 5%, hydroxy ethylene diphosphonic acid 3%, 2-phosphonate group-1, 2, 4-tri carboxyl butane 2%, mol ratio is the iso-butylene/copolymer-maleic anhydride 5% of 1:0.3 ~ 0.6, mol ratio is vinylformic acid/2-methyl-2-acrylamido propanesulfonic acid/MALEIC ANHYDRIDE/2-hydroxyl-2-phosphoryl acetic acid tetrapolymer 15% of 3 ~ 4:1:2:1, mol ratio is maleic anhydride/vinylformic acid/propene sulfonic acid multipolymer 30% of 1:2 ~ 3:1, mol ratio is vinylformic acid/propene sulfonic acid/ortho phosphorous acid multipolymer 8% of 2 ~ 3:2:1, poly-epoxy succinic acid 9%, deionized water 23%, be placed in airtight or pressurized vessel, under agitation condition, the condition and range of controlling temperature of reaction is 55 ℃, control pressure is 0.1Mpa, stir to dissolving completely, obtain colourless or amber dirt dispersion agent.
Embodiment 3
By following mass ratio, configure high efficiency dirt dispersion agent:
By Amino Trimethylene Phosphonic Acid 6%, hydroxy ethylene diphosphonic acid 4%, 2-phosphonate group-1, 2, 4-tri carboxyl butane 4%, mol ratio is the iso-butylene/copolymer-maleic anhydride 8% of 1:0.3 ~ 0.6, mol ratio is vinylformic acid/2-methyl-2-acrylamido propanesulfonic acid/MALEIC ANHYDRIDE/2-hydroxyl-2-phosphoryl acetic acid tetrapolymer 11% of 3 ~ 4:1:2:1, mol ratio is maleic anhydride/vinylformic acid/propene sulfonic acid multipolymer 20% of 1:2 ~ 3:1, mol ratio is vinylformic acid/propene sulfonic acid/ortho phosphorous acid copolymer 1 0% of 2 ~ 3:2:1, poly-epoxy succinic acid 15%, deionized water 22%, be placed in airtight or pressurized vessel, under agitation condition, the condition and range of controlling temperature of reaction is 60 ℃, control pressure is 0.1Mpa, stir to dissolving completely, obtain colourless or amber dirt dispersion agent.
Embodiment 4
The pulp water system dirt dispersion agent of preparation is applied to gasification pulp water system water treatment process; Described dirt dispersion agent is applied to the High Temperature High Pressure of Texaco's coal water slurry gasification, high hard highly basic slag water system; By locate multi-point adding dirt dispersion agent technique at ash water tank, grey pump entrance etc., controlling adding consistency is 50 ~ 100 mg/L, and its beneficial effect is:
At 50 ℃ ~ 200 ℃ temperature, effectively suppress the deposition fouling situation of ash water system, pulp water system dirt dispersion agent scale inhibition performance is 75% ~ 95%, gasification system chilling ring, chilled water pipeline, Heisui River pipeline, Venturi, carbon are washed the key position fouling tendencies such as tower and are obviously alleviated, realize gasification pulp water system stable operation, realized the classification utilization of system multiply water resources simultaneously, optimize enterprise's water resources control, reduce in a large number the outer water displacement of system, realized industry energy conservation and reduced discharging target.
Embodiment 5
The pulp water system dirt dispersion agent of preparation is applied to gasification pulp water system water treatment process; Described dirt dispersion agent is applied to the High Temperature High Pressure of four nozzle new type coal gasifications, high hard highly basic slag water system; By locate multi-point adding dirt dispersion agent technique at ash water tank, grey pump entrance etc., controlling adding consistency is 80 ~ 120 mg/L, and its beneficial effect is:
At 50 ℃ ~ 200 ℃ temperature, effectively suppress the deposition fouling situation of ash water system, pulp water system dirt dispersion agent scale inhibition performance is 75% ~ 95%, gasification system chilling ring, chilled water pipeline, Heisui River pipeline, Venturi, carbon are washed the key position fouling tendencies such as tower and are obviously alleviated, realize gasification pulp water system stable operation, realized the classification utilization of system multiply water resources simultaneously, optimize enterprise's water resources control, reduce in a large number the outer water displacement of system, realized industry energy conservation and reduced discharging target.
Embodiment 6
The pulp water system dirt dispersion agent of preparation is applied to gasification pulp water system water treatment process; Described dirt dispersion agent is applied to the High Temperature High Pressure of polynary slurry gasification, high hard highly basic slag water system; By locate multi-point adding dirt dispersion agent technique at ash water tank, grey pump entrance etc., controlling adding consistency is 80 ~ 150 mg/L, and its beneficial effect is:
At 50 ℃ ~ 200 ℃ temperature, effectively suppress the deposition fouling situation of ash water system, pulp water system dirt dispersion agent scale inhibition performance is 75% ~ 95%, gasification system chilling ring, chilled water pipeline, Heisui River pipeline, Venturi, carbon are washed the key position fouling tendencies such as tower and are obviously alleviated, realize gasification pulp water system stable operation, realized the classification utilization of system multiply water resources simultaneously, optimize enterprise's water resources control, reduce in a large number the outer water displacement of system, realized industry energy conservation and reduced discharging target.
Embodiment 7
The pulp water system dirt dispersion agent of preparation is applied to gasification pulp water system water treatment process; Described dirt dispersion agent is applied to the High Temperature High Pressure of space flight producer gas, high hard highly basic slag water system; By locate multi-point adding dirt dispersion agent technique at ash water tank, grey pump entrance etc., controlling adding consistency is 80 ~ 120 mg/L, and its beneficial effect is:
At 50 ℃ ~ 200 ℃ temperature, effectively suppress the deposition fouling situation of ash water system, pulp water system dirt dispersion agent scale inhibition performance is 75% ~ 95%, gasification system chilling ring, chilled water pipeline, Heisui River pipeline, Venturi, carbon are washed the key position fouling tendencies such as tower and are obviously alleviated, realize gasification pulp water system stable operation, realized the classification utilization of system multiply water resources simultaneously, optimize enterprise's water resources control, reduce in a large number the outer water displacement of system, realized industry energy conservation and reduced discharging target.
Claims (2)
1. a processing method for circular treatment gasification pulp water, is characterized in that:
1) preparation of pulp water system dirt dispersion agent:
The Amino Trimethylene Phosphonic Acid 1% ~ 10% that described pulp water system dirt dispersion agent contains mass percent, hydroxy ethylene diphosphonic acid 1% ~ 8%, 2-phosphonate group-1, 2, 4-tri carboxyl butane 1% ~ 20%, mol ratio is the iso-butylene/copolymer-maleic anhydride 2% ~ 10% of 1:0.3 ~ 0.6, mol ratio is vinylformic acid/2-methyl-2-acrylamido propanesulfonic acid/MALEIC ANHYDRIDE/2-hydroxyl-2-phosphoryl acetic acid tetrapolymer 10%～60% of 3 ~ 4:1:2:1, mol ratio is maleic anhydride/vinylformic acid/propene sulfonic acid copolymer 1 0%～50% of 1:2 ~ 3:1, mol ratio is vinylformic acid/propene sulfonic acid/ortho phosphorous acid copolymer 1 %～30% of 2 ~ 3:2:1, poly-epoxy succinic acid 0.5%～40%, surplus is water,
Concrete preparation process is as follows: by Amino Trimethylene Phosphonic Acid, hydroxy ethylene diphosphonic acid, 2-phosphonate group-1, 2, 4-tri carboxyl butane, iso-butylene/copolymer-maleic anhydride, vinylformic acid/2-methyl-2-acrylamido propanesulfonic acid/MALEIC ANHYDRIDE/2-hydroxyl-2-phosphoryl acetic acid tetrapolymer, maleic anhydride/vinylformic acid/propene sulfonic acid multipolymer, vinylformic acid/propene sulfonic acid/ortho phosphorous acid multipolymer, poly-epoxy succinic acid, deionized water, be placed in airtight or pressurized vessel, under agitation condition, the condition and range of controlling temperature of reaction is 40 ℃～70 ℃, control pressure is 0.1 Mpa, stir to dissolving completely, obtain colourless or amber dirt dispersion agent,
2) processing method of circular treatment gasification pulp water:
The pulp water system dirt dispersion agent of preparation is applied to gasification pulp water system water treatment process method; Described dirt dispersion agent is applied to the water system of gasification high rigidity, high alkalinity, high pressure-temperature, high suspended matter; By adding dirt dispersion agent technique at ash water tank, grey pump entrance many places point, controlling adding consistency is 50 ~ 200 mg/L, at 50 ℃ ~ 200 ℃ temperature, making pulp water system dirt dispersion agent scale inhibition performance is 75% ~ 95%, realizes the classification utilization of gasification pulp water system stable operation and multiply water resources.
2. according to processing method claimed in claim 1, it is characterized in that:
The preparation of pulp water system dirt dispersion agent:
The Amino Trimethylene Phosphonic Acid 2% ~ 8% that described pulp water system dirt dispersion agent contains mass percent, hydroxy ethylene diphosphonic acid 1% ~ 5%, 2-phosphonate group-1, 2, 4-tri carboxyl butane 2% ~ 15%, mol ratio is the iso-butylene/copolymer-maleic anhydride 3% ~ 10% of 1:0.3 ~ 0.6, mol ratio is vinylformic acid/2-methyl-2-acrylamido propanesulfonic acid/MALEIC ANHYDRIDE/2-hydroxyl-2-phosphoryl acetic acid tetrapolymer 10%～50% of 3 ~ 4:1:2:1, mol ratio is maleic anhydride/vinylformic acid/propene sulfonic acid multipolymer 20%～45% of 1:2 ~ 3:1, mol ratio is vinylformic acid/propene sulfonic acid/ortho phosphorous acid multipolymer 5%～25% of 2 ~ 3:2:1, poly-epoxy succinic acid 0.5%～30%, surplus is water,
Concrete preparation process is as follows: by Amino Trimethylene Phosphonic Acid, hydroxy ethylene diphosphonic acid, 2-phosphonate group-1, 2, 4-tri carboxyl butane, iso-butylene/copolymer-maleic anhydride, vinylformic acid/2-methyl-2-acrylamido propanesulfonic acid/MALEIC ANHYDRIDE/2-hydroxyl-2-phosphoryl acetic acid tetrapolymer, maleic anhydride/vinylformic acid/propene sulfonic acid multipolymer, vinylformic acid/propene sulfonic acid/ortho phosphorous acid multipolymer, poly-epoxy succinic acid, deionized water, be placed in airtight or pressurized vessel, under agitation condition, the condition and range of controlling temperature of reaction is 40 ℃～60 ℃, control pressure is 0.1 Mpa, stir to dissolving completely, obtain colourless or amber dirt dispersion agent.
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| CN105060365A (en) * | 2015-08-06 | 2015-11-18 | 沈健龙 | Processing agent for removing estradiol and etinilestradiol in pharmaceutical factory waste water |
| CN105776591B (en) * | 2016-03-10 | 2018-05-25 | 泰州市九运化工科技有限公司 | A kind of without phosphorus-low-phosphorous Grey water antiscale dispersion agent adds technique |
| CN105754670B (en) * | 2016-04-06 | 2017-09-29 | 山东泰和水处理科技股份有限公司 | Effective dispersant stabilizer |
| CN106244245B (en) * | 2016-08-31 | 2019-05-14 | 新能凤凰（滕州）能源有限公司 | Gasification furnace dry state slag-draining device and method |
| CN109294545A (en) * | 2018-08-30 | 2019-02-01 | 天津正达科技有限责任公司 | A kind of water solubility corrosion inhibitor for oil field and preparation method thereof |
| CN110627230B (en) * | 2019-10-09 | 2021-11-19 | 天津正达科技有限责任公司 | Coal gasification high-hardness high-alkalinity slag water phosphorus-free scale inhibition and dispersion agent |
| CN113816504A (en) * | 2021-09-24 | 2021-12-21 | 南京开广化工有限公司 | Coal gasification ash water dispersing agent and preparation method thereof |
| CN114262073A (en) * | 2021-12-03 | 2022-04-01 | 德蓝水技术股份有限公司 | High-efficiency ash water dispersant and preparation method thereof |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Patentee after: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE Co.,Ltd. Patentee after: TIANJIN ZHENGDA SCIENCE & TECHNOLOGY CO.,LTD. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Patentee before: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE Patentee before: TIANJIN ZHENGDA SCIENCE & TECHNOLOGY CO.,LTD. |
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Effective date of registration: 20161025 Address after: No. three road 300131 Tianjin city Hongqiao District dingzigu No. 85 Patentee after: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE Co.,Ltd. Patentee after: CNOOC ENERGY TECHNOLOGY & SERVICES Ltd. Patentee after: TIANJIN ZHENGDA SCIENCE & TECHNOLOGY CO.,LTD. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Patentee before: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE Co.,Ltd. Patentee before: TIANJIN ZHENGDA SCIENCE & TECHNOLOGY CO.,LTD. |