CN110482716A - A kind of dedicated non-phosphorus scale dispersing agent of coal gasification buck and preparation method thereof, application - Google Patents
A kind of dedicated non-phosphorus scale dispersing agent of coal gasification buck and preparation method thereof, application Download PDFInfo
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- CN110482716A CN110482716A CN201910819136.8A CN201910819136A CN110482716A CN 110482716 A CN110482716 A CN 110482716A CN 201910819136 A CN201910819136 A CN 201910819136A CN 110482716 A CN110482716 A CN 110482716A
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- coal gasification
- dispersing agent
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- phosphorus
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
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- General Chemical & Material Sciences (AREA)
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The present invention provides a kind of dedicated non-phosphorus scale dispersing agents of coal gasification ash water system, are grouped as by the group of following component content: (A) is poly-epoxy succinic acid or polyepoxy sodium succinate 10% ~ 50%；(B) one or more polymers of carboxylic acid 10% ~ 30%；It (C) is sal-ammoniac-ammonia spirit 0.5% ~ 2%；Surplus is water.Non-phosphorus scale application of dispersant of the present invention is in coal gasification ash water system, additive amount is 30-120mg/L, obtain preferable antiscaling dispersion effect, it can ensure gasification system long-period stable operation, and the content of phosphorus in draining outside coal gasification buck is reduced, meet the requirement that National Industrial sewage discharge total phosphorus content is less than 0.5mg/L.
Description
Technical field
The invention belongs to coal gasification ash water system water treatment technologies, and in particular to a kind of non-phosphorus scale dispersing agent, without phosphorus resistance
The application of the preparation method of dirty dispersing agent and the non-phosphorus scale dispersing agent in coal gasification ash water system.
Background technique
By the end of the year 2018, Coal Chemical Industry in China industry has nearly thousand gasification furnaces of more than 30 families running, and synthesis gas total amount is super
Spend 30,000,000 sides/hour.For external coal gasification mainly for the production of fuel gas and circulating generation, grey water process is also relatively easy；And
Domestic synthesis gas requires strictly dustiness mainly as the unstripped gas of chemical products, and buck carries out cleaning dust to synthesis gas,
And it recycles, therefore ash water system is to guarantee one important technical links of gasification system long-period stable operation.
Country's coal gasification ash water system all controls ash water system fouling using the method for adding phosphorous dirt dispersion agent at present,
Guarantee the normal operation of gasification system.With the development of environmental protection, phosphorus content in industrial water pollution object has done more in country
Stringent regulation, discharge standard are reduced to 0.5 mg/L by 1.0 original mg/L, and existing phosphorous system is unable to satisfy environmental protection
It is required that therefore developing a kind of non-phosphorus scale dispersing agent for coal gasification buck circular treatment is present urgent problem.
Summary of the invention
Object of the present invention is to overcome the deficiencies of the prior art and provide a kind of dedicated non-phosphorus scale dispersion of new coal gasification buck
Agent, preparation method and applications not only can effectively prevent the serious scale problems of coal gasification buck, but also be able to satisfy environment protection emission to phosphorus
Requirement, ensure coal gasification ash water system long-period stable operation.
The purpose of the present invention is realized by following embodiments:
The present invention provides a kind of dedicated non-phosphorus scale dispersing agent of coal gasification buck, is grouped as by the group of following component content:
It (A) is poly-epoxy succinic acid or polyepoxy sodium succinate 10% ~ 50%；
(B) one or more polymers of carboxylic acid 10% ~ 30%；
It (C) is sal-ammoniac-ammonia spirit 0.5% ~ 2%；
Surplus is water.
In the above-mentioned technical solutions, the relative molecular weight of the poly-epoxy succinic acid or polyepoxy sodium succinate preferably exists
500~3000。
The polymers of carboxylic acid monomer is preferably acrylic acid, maleic anhydride, 2- acrylamide-2-methyl propane sulfonic, third
One of olefin(e) acid hydroxypropyl acrylate is a variety of.
The pH of the ammonium chloride and ammonia spirit is 10.
The present invention also provides a kind of preparation methods of above-mentioned dedicated non-phosphorus scale dispersing agent of coal gasification buck, with quality hundred
Divide than meter, 10% ~ 50% poly-epoxy succinic acid or polyepoxy sodium succinate are placed in reaction kettle, opens stirring, be then added
10% ~ 30% one or more polymers of carboxylic acid are added after mixing evenly in 0.5% ~ 2% ammonium chloride-ammonia spirit, and surplus adds
Water is made after being sufficiently stirred.
Non-phosphorus scale application of dispersant of the present invention is obtained in coal gasification ash water system, additive amount 30-120mg/L
Preferable antiscaling dispersion effect was obtained, can ensure gasification system long-period stable operation, and reduces coal gasification buck outlet
The content of phosphorus in water meets requirement of the National Industrial sewage discharge total phosphorus content less than 0.5 mg/L.
The dedicated non-phosphorus scale dispersing agent of coal gasification buck of the present invention, in the product simultaneously containing hydroxyl, carboxylic acid group,
The groups such as sulfonic group, hydroxypropyl, nonionic group (- C-O-R-), while there is chelating, dispersion, absorption, distortion of lattice etc. and making
With, so as to preferably prevent the formation of calcium carbonate in water, calcium sulfate, Barium sulfate crystals, and make the crystal formed have
There is soft characteristic, prevents from forming hard scale.In addition research of non-phosphorus scale inhibitor of the present invention contains nitrogen-free, non-phosphorus organic compound polycyclic oxygen amber
Amber acid or polyepoxy sodium succinate, make it have the silicon dirt scale inhibition and dispersion performance for being difficult to reach relative to other antisludging agents.
Specific embodiment
The present invention will be further described combined with specific embodiments below.
Embodiment 1
1 ton of dedicated non-phosphorus scale dispersing agent of coal gasification buck of the present invention is produced, preparation process is as follows: into reaction kettle
The polyepoxy sodium succinate (molecular weight 700-1500) of 200 kg is added, opens stirring, 80 kg ammonium chlorides-ammonia is then added
Solution (pH 10) is stirring evenly and then adding into 200 kg polymaleic anhydride, 100 kg maleic anhydrides and 2- acrylamide -2- methyl
Sulphonic acid copolymer is eventually adding 420 kg deionized waters, is cooled to room temperature to obtain after being thoroughly mixed uniformly amber
Prescribed liquid is the dedicated non-phosphorus scale dispersing agent of coal gasification.
Embodiment 2
1 ton of dedicated non-phosphorus scale dispersing agent of coal gasification buck of the present invention is produced, preparation process is as follows: into reaction kettle
The polyepoxy sodium succinate (molecular weight 700-1500) of 300 kg is added, opens stirring, 60 kg ammonium chlorides-ammonia is then added
Solution (pH 10) is stirring evenly and then adding into 150 kg polymaleic anhydride, 150kg acrylic acid and 2- acrylamide -2- methyl-prop
Sulfonic acid copolymer is eventually adding 340 kg deionized waters, is cooled to room temperature to obtain after being thoroughly mixed uniformly amber transparent
Liquid is the dedicated non-phosphorus scale dispersing agent of coal gasification.
Embodiment 3
1 ton of dedicated non-phosphorus scale dispersing agent of coal gasification buck of the present invention is produced, preparation process is as follows: into reaction kettle
The polyepoxy sodium succinate (molecular weight 700-1500) of 250 kg is added, opens stirring, 60 kg ammonium chlorides-ammonia is then added
Solution (pH 10) is stirring evenly and then adding into 250 kg maleic anhydrides and acrylic copolymer, 100 kg acrylic acid and 2- propylene
Amide -2- methyl propane sulfonic acid copolymer, is eventually adding 340 kg deionized waters, is cooled to room temperature after being thoroughly mixed uniformly
It is the dedicated non-phosphorus scale dispersing agent of coal gasification to amber transparency liquid.
Performance test
Testing experiment 1
The dedicated non-phosphorus scale dispersing agent of the coal gasification prepared in embodiment 1 ~ 3 is evaluated in laboratory.Matched with distilled water
Ca processed2+Concentration is 240 mg/L, total alkalinity is the experimental water of 732 mg/L, pH value 9.0 or so, and 100 mg/L are added and implement
The non-phosphorus scale dispersing agent prepared in example 1 ~ 3, in standing 8 h in 80 DEG C of ± 1 DEG C of waters bath with thermostatic control, there have in water to be a little cotton-shaped soft heavy
Starch, calcium ion retention is respectively 92%, 95%, 93% after experiment, and total phosphorus content is zero in measurement experiment water.
Testing experiment 2
The dedicated non-phosphorus scale application of dispersant of the coal gasification buck prepared in embodiment 3 is showed in coal gasification ash water system water
, by the way that in ash water tank, buck pump intake etc. multi-point adding dirt dispersion agent technique, control adding consistency is 80 ~ 120 mg/
L, the beneficial effect is that: effectively inhibit the deposition fouled condition of ash water system, coal gasification system at a temperature of 50 DEG C ~ 200 DEG C
It is substantially reduced that system chilling ring, Quench water pipeline, Heisui River pipeline, venturi, carbon wash the key positions fouling tendency such as tower, realize coal
Gasification Slag-water system stable operation 180 days, while realizing national work of the phosphorus content less than 0.5 mg/L in outlet ash water system
Industry sewage drainage standard realizes industry energy conservation environmental objective.
Claims (6)
1. a kind of dedicated non-phosphorus scale dispersing agent of coal gasification buck, which is characterized in that be grouped as by the group of following component content:
It (A) is poly-epoxy succinic acid or polyepoxy sodium succinate 10% ~ 50%；
(B) one or more polymers of carboxylic acid 10% ~ 30%；
It (C) is sal-ammoniac-ammonia spirit 0.5% ~ 2%；
Surplus is water.
2. according to the dedicated non-phosphorus scale dispersing agent of coal gasification buck described in right 1, which is characterized in that the poly- epoxy succinic
The relative molecular weight of acid or polyepoxy sodium succinate is 500 ~ 3000.
3. according to the dedicated non-phosphorus scale dispersing agent of coal gasification buck described in right 1, which is characterized in that the polymers of carboxylic acid
Monomer is one of acrylic acid, maleic anhydride, 2- acrylamide-2-methyl propane sulfonic, hydroxypropyl acrylate or a variety of.
4. according to the dedicated non-phosphorus scale dispersing agent of coal gasification buck described in right 1, which is characterized in that the ammonium chloride and ammonia
The pH of aqueous solution is 10.
5. a kind of preparation method of the dedicated non-phosphorus scale dispersing agent of coal gasification buck described in claim 1, which is characterized in that with
10% ~ 50% poly-epoxy succinic acid or polyepoxy sodium succinate are placed in reaction kettle by mass percent meter, open stirring, so
0.5% ~ 2% ammonium chloride-ammonia spirit is added afterwards, after mixing evenly, 10% ~ 30% one or more polymers of carboxylic acid are added,
Surplus adds water, is made after being sufficiently stirred.
6. a kind of dedicated non-phosphorus scale dispersing agent answering in coal gasification ash water system of coal gasification buck described in claim 1
With, which is characterized in that the additive amount of the dedicated non-phosphorus scale dispersing agent of the coal gasification buck is the 30- of coal gasification buck
120mg/L。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910819136.8A CN110482716A (en) | 2019-08-31 | 2019-08-31 | A kind of dedicated non-phosphorus scale dispersing agent of coal gasification buck and preparation method thereof, application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910819136.8A CN110482716A (en) | 2019-08-31 | 2019-08-31 | A kind of dedicated non-phosphorus scale dispersing agent of coal gasification buck and preparation method thereof, application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112980523A (en) * | 2021-02-22 | 2021-06-18 | 陕西省石油化工研究设计院 | Coal water slurry and additive mixed with methanol-to-olefin wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06330020A (en) * | 1993-05-20 | 1994-11-29 | Nippon Shokubai Co Ltd | Chelating composition, its production and detergent composition |
| CN1375467A (en) * | 2002-04-29 | 2002-10-23 | 南京工业大学 | Water treatment corrosion and scale inhibitor and preparation method thereof |
| CN108946964A (en) * | 2018-07-04 | 2018-12-07 | 江苏全泽环保科技有限公司 | A kind of coal gasification phosphorus-free green ash water dispersant |
| CN109650567A (en) * | 2019-01-31 | 2019-04-19 | 陈建华 | Gravity die Grey water antiscale dispersion agent and application adaptively drop in a kind of coal gasification grey black water |
-
2019
- 2019-08-31 CN CN201910819136.8A patent/CN110482716A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06330020A (en) * | 1993-05-20 | 1994-11-29 | Nippon Shokubai Co Ltd | Chelating composition, its production and detergent composition |
| CN1375467A (en) * | 2002-04-29 | 2002-10-23 | 南京工业大学 | Water treatment corrosion and scale inhibitor and preparation method thereof |
| CN108946964A (en) * | 2018-07-04 | 2018-12-07 | 江苏全泽环保科技有限公司 | A kind of coal gasification phosphorus-free green ash water dispersant |
| CN109650567A (en) * | 2019-01-31 | 2019-04-19 | 陈建华 | Gravity die Grey water antiscale dispersion agent and application adaptively drop in a kind of coal gasification grey black water |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112980523A (en) * | 2021-02-22 | 2021-06-18 | 陕西省石油化工研究设计院 | Coal water slurry and additive mixed with methanol-to-olefin wastewater |
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Application publication date: 20191122 |