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Addition technology of zero-phosphorus-low-phosphorus grey water scale inhibition and dispersion agent

A phosphorus-free scale inhibitor and dispersant technology, applied in descaling and water softening, water/sludge/sewage treatment, special treatment targets, etc. Element content, good gray water scale inhibition and dispersion, and the effect of realizing environmental protection discharge

Active Publication Date: 2016-07-20
TAIZHOU JIUYUN CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the phosphorus discharged is mainly in the form of organic phosphorus (about 80%), which is difficult to control in the subsequent sewage treatment process and is difficult to degrade in the natural environment

Method used

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  • Addition technology of zero-phosphorus-low-phosphorus grey water scale inhibition and dispersion agent
  • Addition technology of zero-phosphorus-low-phosphorus grey water scale inhibition and dispersion agent
  • Addition technology of zero-phosphorus-low-phosphorus grey water scale inhibition and dispersion agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The phosphorus-free scale inhibitor dispersant in this example is: in terms of mass percentage, 30% of AA / AMPS / HPA terpolymer, 20% of polymaleic acid, 20% of T225, 30% of polyepoxysuccinic acid, mixed uniformly at room temperature , add water to dilute to a solution with a solid content of 25%.

[0019] The low-phosphorus scale-inhibiting dispersant in this example is: in terms of mass percentage, phosphoryl copolymer 20%, maleic acid styrene sulfonate copolymer 20%, PBTCA 30%, polyacrylic acid 30%, mix well at room temperature, add water Dilute to a solution with a solid content of 25%.

[0020] The above-mentioned non-phosphorus scale inhibitor dispersant and low phosphorus scale inhibitor dispersant were tested in Jiangsu Thorpe gasification unit in July 2015. figure 2 As shown in the process flow chart, after the non-phosphorus scale inhibitor dispersant is pressurized to 0.5Mpa by the dispersant pump, it is sent all the way to the overflow pipe 1 of the settling ...

Embodiment 2

[0025] The non-phosphorous scale inhibitor dispersant in this example is: in terms of mass percentage, AA / AMPS / HPA terpolymer 20%, polymaleic acid 40%, T225 20%, polyaspartic acid 20%, mix well at room temperature , add water to dilute to a solution with a solid content of 25%.

[0026] The low-phosphorus scale-inhibiting dispersant in this example is: in terms of mass percentage, phosphoryl copolymer 20%, maleic acid styrene sulfonate copolymer 20%, PBTCA 10%, polymaleic acid 30%, polyacrylic acid 20% , mix well at room temperature, add water to dilute to a solution with a solid content of 25%.

[0027] The above-mentioned non-phosphorous scale inhibitor dispersant and low phosphorus scale inhibitor dispersant were tested in Jiangsu Thorpe gasification unit in July 2015, as shown in figure 2 As shown in the process flow chart, the phosphorus-free scale-inhibiting dispersant is pressurized to 0.5Mpa by the dispersant pump and the flow rate is adjusted. The dosages at these ...

Embodiment 3

[0029] The phosphorus-free scale inhibitor dispersant in this example is: in terms of mass percentage, 10% of AA / AMPS / HPA terpolymer, 40% of polymaleic acid, 20% of T225, and 30% of polyepoxysuccinic acid, mixed uniformly at room temperature , add water to dilute to a solution with a solid content of 25%.

[0030] The low-phosphorus scale-inhibiting dispersant in this example is: in terms of mass percentage, 30% of phosphoryl copolymer, 30% of maleic acid styrene sulfonate copolymer, 30% of PBTCA, and 10% of polymaleic acid, mixed uniformly at room temperature , add water to dilute to a solution with a solid content of 25%.

[0031] The above-mentioned non-phosphorous scale inhibitor dispersant and low phosphorus scale inhibitor dispersant were tested in Jiangsu Thorpe gasification unit in July 2015, as shown in figure 2 As shown in the process flow chart, the phosphorus-free scale-inhibiting dispersant is pressurized to 0.5Mpa by the dispersant pump and the flow rate is adj...

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Abstract

The invention discloses an addition technology of a zero-phosphorus-low-phosphorus grey water scale inhibition and dispersion agent, and belongs to the technical field of gasification water treatment. A formula and an addition technology of a scale inhibition and dispersion agent are improved, a low-phosphorus dispersion agent is added at a high-temperature part, a zero-phosphorus dispersion agent is added at a low-temperature part, and the low-phosphorus dispersion agent and the zero-phosphorus dispersion agent are combined and added at different sections, so that the content of phosphorus elements in externally discharged waste water of gasification enterprises is greatly reduced, the discharged waste water reaches the first-level industrial water discharge standard of China, environment-friendly discharge is realized, and besides, good grey waste scale inhibition and dispersion effects are achieved.

Description

technical field [0001] The invention relates to a process for adding a gray water scale inhibitor and dispersant, in particular to a process for adding a phosphorus-free and low phosphorus gray water scale inhibitor and dispersant, and belongs to the technical field of coal gasification water treatment. Background technique [0002] my country is a country with more coal and less oil, and the clean utilization of coal has always been our national strategy. In the clean utilization of coal, coal gasification technology is the key. Among the coal gasification technologies, pulverized coal gasification and coal-water slurry gasification technologies are the mainstream technologies. The slag water treatment process is the key process of pulverized coal and coal water slurry technology, and also the key to ensure the long-term stable operation of the production equipment. Because coal contains a large amount of calcium-magnesium-iron plasma, in the black water and gray water of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C02F5/14
CPCC02F5/12C02F5/14C02F2303/22
Inventor 陈建华
Owner TAIZHOU JIUYUN CHEM TECH CO LTD
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