Tar-type coal water slurry additive prepared from composite raw materials and production technology of tar-type coal water slurry additive

A production process and additive technology, used in fuel additives, petroleum industry, fuels, etc., can solve the problems of low slurry concentration and poor stability, and achieve the effect of wide source and wide application range.

Inactive Publication Date: 2016-06-22
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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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for low-rank coal, due to the well-developed surface pores and more water-absorbing gr

Method used

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  • Tar-type coal water slurry additive prepared from composite raw materials and production technology of tar-type coal water slurry additive
  • Tar-type coal water slurry additive prepared from composite raw materials and production technology of tar-type coal water slurry additive
  • Tar-type coal water slurry additive prepared from composite raw materials and production technology of tar-type coal water slurry additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Synthetic tar-type coal water slurry additive: (1) Weigh 30g, 60g, 45g, 15g of washing oil, naphthalene oil, anthracene oil, papermaking waste liquid at a mass ratio of 20:40:30:10, and then weigh The good washing oil, naphthalene oil, and anthracene oil are put into a 1L four-necked flask. According to the average molecular weight of the washing oil, naphthalene oil, anthracene oil, and papermaking waste liquid, the total number of moles is calculated to be 1.5 mol, and 98% 2.3 mol of concentrated sulfuric acid was put into the constant pressure dropping funnel. (2) The temperature of the oil bath is controlled to 155°C, 98% concentrated sulfuric acid is added at a rate of 4d / s, and the temperature is kept at 155°C for 4-5h under stirring to carry out the sulfonation reaction. (3) After the sulfonation reaction is over, the temperature is lowered to 120°C, 55g of water is added, and hydrolyzed at 120°C for 50 minutes, and the weighed papermaking waste liquid is adde...

Embodiment 2

[0057] (1) Synthetic tar-type coal-water slurry additives: (1) Weigh the washing oil, naphthalene oil, anthracene oil, and papermaking waste liquid at a mass ratio of 20:40:30:10 to a total of 1.5 mol. The oil was put into a 1L four-necked flask, and 2.3 mol of 98% concentrated sulfuric acid was weighed into a constant pressure dropping funnel. (2) The temperature of the oil bath is controlled to 155°C, 98% concentrated sulfuric acid is added at a rate of 4d / s, and the temperature is kept at 155°C for 4-5h under stirring to carry out the sulfonation reaction. (3) After the sulfonation reaction is over, the temperature is lowered to 120°C, 55g of water is added, and hydrolyzed at 120°C for 50 minutes, and the weighed papermaking waste liquid is added. (4) Add 1.1 mol of 37% formaldehyde dropwise at a rate of 4d / s, and condense at 115°C for 4h. (5) After the condensation reaction is completed, add calcium hydroxide to adjust the pH to 8. (6) Concentrate the filtrate to 50%, add...

Embodiment 3

[0071] (1) Synthetic tar-type coal water slurry additives: (1) Weigh the washing oil, naphthalene oil, anthracene oil, and papermaking waste liquid at a mass ratio of 25:35:20:20 to 1.5 mol. The oil was put into a 1L four-necked flask, and 1.8 mol of 98% concentrated sulfuric acid was weighed into a constant pressure dropping funnel. (2) The temperature of the oil bath is controlled to 140℃, 98% concentrated sulfuric acid is added at a speed of 4d / s, and the temperature is kept at 140℃ for 5h under stirring to carry out the sulfonation reaction. (3) After the sulfonation reaction is over, the temperature is lowered to 120°C, 55g of water is added, and hydrolyzed at 120°C for 50 minutes, and the weighed papermaking waste liquid is added. (4) Add 37% formaldehyde 0.8mol dropwise at a rate of 4d / s, and condense at 110℃ for 5h. (5) After the condensation reaction is completed, add potassium hydroxide to adjust the pH to 9. (6) Concentrate the filtrate to 50%, add 15 g of ammonium...

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Abstract

The invention discloses a tar-type coal water slurry additive prepared from composite raw materials and a production technology of the tar-type coal water slurry additive.The tar-type coal water slurry additive is synthesized by mixing the main materials such as scrubbing oil, naphthalene oil, anthracene oil and papermaking wastewater in different mass ratios, subjecting a mixture to processes such as sulfonation and condensation, and adding a pore blocking agent carbonate into a synthesized product.The tar-type coal water slurry additive has the advantages that the tar-type coal water slurry additive has the characteristic of general dispersants, namely improvement in coal surface hydrophility; electrostatic repulsion among particles is enhanced, so that improvement in coal slurry fluidity is benefited; since strong stereo-hindrance effect is generated, slurry rheologic stability is achieved; the tar-type coal water slurry additive has specific cooperative synergism characteristic, and accordingly mutually complementary cooperative synergism is achieved; the tar-type coal water slurry additive is good for slurry forming ability of coal types different in coalification degree, is particularly applicable to low-rank coal, and is high in slurry forming concentration and excellent in coal slurry fluidity and stability under the condition that additive coal-based consumption is not more than 1.0%.

Description

Technical field [0001] The invention relates to the field of coal water slurry additives, in particular to a composite raw material preparation tar type coal water slurry additive and a production process. Background technique [0002] Coal water slurry is one of the clean coal technologies that emerged in the 1980s. It is a slurry prepared from coal, water and a small amount of chemical additives with a certain particle size distribution. Coal water slurry products with industrial application value require high concentration, low viscosity, good fluidity and long stability time. In the production process of coal water slurry, coal water slurry additives play a vital role in the performance of coal water slurry. At present, the additives of coal water slurry mainly include lignin series, naphthalene series, humic acid series and non-ionic type. However, these products have their own advantages and disadvantages, and their applications are restricted to varying degrees. For ex...

Claims

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Application Information

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IPC IPC(8): C10L1/12C10L1/24
CPCC10L1/10C10L1/106C10L1/1233C10L1/1241C10L1/2462C10L1/2475C10L2300/20C10L2300/30C10L2300/40
Inventor 张俊先路文学周刚杨国辉王振华尹洪清王艳宋甜甜刘海燕李磊王辉陈全辉于利红赵梅梅
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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