Method for fast evaluating dispersibility of gasification ash water dirt dispersion agent

A scale-inhibiting dispersant, gray water technology, applied in the direction of analysis of materials, instruments, etc., can solve the problem that the evaluation of the dispersing ability of the agent cannot be achieved, and achieve the effect of objective and accurate evaluation results

Inactive Publication Date: 2020-02-18
兖矿水煤浆气化及煤化工国家工程研究中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of these methods are aimed at the scale inhibition performance of the agent, evaluating the ability of the agent to inhibit the formation and growth of crystals; the particle form of the evaluation of the scale inhibition performance is mainly dissolved ions or colloidal fine particles, and it is impossible to achieve the effect of the agent on fine particles with larger particle sizes. Evaluation of Ash Dispersion Ability
There is no effective method in China to evaluate the dispersion performance of fine ash particles by chemicals

Method used

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  • Method for fast evaluating dispersibility of gasification ash water dirt dispersion agent
  • Method for fast evaluating dispersibility of gasification ash water dirt dispersion agent
  • Method for fast evaluating dispersibility of gasification ash water dirt dispersion agent

Examples

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Comparison scheme
Effect test

Embodiment 1

[0041] Example 1 A method for quickly evaluating the dispersibility of gasified gray water scale inhibitors and dispersants of the present invention is used to compare and evaluate the medicaments. The case is as follows:

[0042] 1) Coal ash particle size adjustment: adjust the fired coal ash particle size so that its particle size distribution matches the fine ash particle size distribution in black water. The particle size distribution of the suspension coal ash is shown in Table 1:

[0043] Table 1 Coal ash particle size distribution data table

[0044] <10％

<25％

<50％

<75％

<90％

4.242μm 12.20μm 27.12μm 49.51μm 60.61μm

[0045] 2) Configure experimental water: weigh 5g of prepared coal ash particles and pour them into a beaker, then add 500ml of water into the experimental beaker to ensure that the solid content of the prepared suspension is 1%, and put the prepared suspension solution into the water bath Heating in the pot at a constan...

Embodiment 2

[0058] Example 2 A method for quickly evaluating the dispersibility of gasified gray water scale inhibitors and dispersants of the present invention is used to compare and evaluate the medicaments. The case is as follows:

[0059] 1) Coal ash particle size adjustment: adjust the fired coal ash particle size so that its particle size distribution matches the fine ash particle size distribution in black water. The particle size distribution of the suspension coal ash is shown in Table 5:

[0060] Table 5 coal ash particle size distribution data table

[0061] <10％

<25％

<50％

<75％

<90％

5.695 13.56 35.52 74.08 160.6

[0062] 2) Configure experimental water: weigh 5g of prepared coal ash particles and pour them into a beaker, then add 500ml of water into the experimental beaker to ensure that the solid content of the prepared suspension is 1%, and put the prepared suspension solution into the water bath Heating in the pot at a constant temperature...

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Abstract

The present invention provides a method for fast evaluating dispersibility of gasification ash water dirt dispersion agent. The method comprises the following steps: A) allocating a grain diameter ofcoal ash, so that grain diameter distribution of the coal ash matches grain diameter distribution of fine ash in gasification ash water; B) mixing the coal ash with water, to obtain suspension liquid,heating the suspension liquid in water bath, and then performing stirring, to obtain experimental suspension liquid; C) keeping the experimental suspension liquid static, and testing blank turbidity;D) repeating steps A) and B), and then adding a dirt dispersion agent to the experimental suspension liquid obtained in step B), keeping static and testing turbidity; and E) calculating a dispersionratio M of the dirt dispersion agent. According to the evaluation method, working conditions of a factory gasification black water system are restored to a great extent through technologies such as constant temperature and allocating coal ash grain diameter. The method is simple and intuitive to operate and strong in feasibility; fills the gap that dispersibility of the dirt dispersion agent usedby a coal gasification slag sluicing system can be evaluated, and has guiding significance for factory chemicals selection.

Description

technical field [0001] The invention relates to the technical field of coal chemical gasification gray water treatment, in particular to a method for quickly evaluating the dispersibility of a gasification gray water scale inhibitor and dispersant. Background technique [0002] Coal is one of the main fossil energy sources in China and occupies a very important position in my country's energy production structure. In the current energy consumption structure at all levels, coal consumption accounts for 2 / 3 of the total consumption. Due to the shortage of petroleum resources in the world, the development trend of coal chemical industry replacing petrochemical industry is becoming increasingly rapid. Coal gasification is known as the leading technology of the new coal chemical industry. In recent years, new coal chemical projects using coal gasification to synthesize chemical products are in the ascendant. [0003] Pipeline fouling has seriously restricted the operating cycle ...

Claims

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Application Information

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IPC IPC(8): G01N15/00
CPCG01N15/00G01N2015/0053
Inventor 刘峰张彦尹洪清李彩艳王军王振华路文学吴永国杨国辉王艳乔波
Owner 兖矿水煤浆气化及煤化工国家工程研究中心有限公司
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