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Coal tar yield increasing agent for coal low-temperature destructive distillation process

A technology of coal tar and yield increasing agent is applied in the field of coal chemical industry to achieve the effect of reducing secondary reactions

Inactive Publication Date: 2020-05-08
浙江杭化科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the research is to increase the yield of coal tar by improving the process and equipment, but there are few studies on increasing the yield of coal tar by adding additives.

Method used

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  • Coal tar yield increasing agent for coal low-temperature destructive distillation process
  • Coal tar yield increasing agent for coal low-temperature destructive distillation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1): in the 250mL four-necked flask that agitator, thermometer and condenser are housed, add 50 grams of xylene, 16 grams of 2-hydroxybenzoic acid, 8 grams of succinic acid, turn on the stirring device and turn on the condensed water at the same time, then Slowly add 26 grams of propylenediamine, heat up to xylene and begin to reflux, react after 2 hours, cool down, and set aside.

[0031] Step 2): 30 grams of the product prepared in the previous step are added to 45 grams of xylene, and 6 grams of polyisobutylene succinimide, 7 grams of polyoxyethylene polyoxypropylene ether and 12 grams of polyoxyethylene polyoxypropylene ether are added under stirring conditions. Dodecyl primary amine, mix well to get coal tar income increase agent.

Embodiment 2

[0033] Step 1): In a 250mL four-neck flask equipped with a stirrer, a thermometer and a condenser, add 50 grams of heavy aromatic solvent oil, 8 grams of isobutyl 2-hydroxybenzoate, and 16 grams of maleic acid, and open the Turn on the condensed water at the same time of the stirring device, then slowly add 26 grams of diethylenetriamine, raise the temperature to 120°C, react for 2 hours, cool down, and set aside.

[0034] Step 2): 30 grams of the product prepared in the previous step are added to 45 grams of heavy aromatic solvent oil, and 8 grams of polyisobutylene bisuccinimide, 3 grams of dodecyl-tetradecyl alcohol polyoxyethylene are added under stirring conditions Polyoxypropylene ether and 14 grams of coconut oil alkyl primary amine are mixed uniformly to obtain the coal tar income increasing agent.

Embodiment 3

[0036] Step 1): In the 250mL four-neck flask equipped with stirrer, thermometer and condenser, add 50 grams of heavy aromatic hydrocarbon solvent naphtha, 10 grams of isooctyl 2-hydroxybenzoate, 14 grams of citric acid, open the stirring device and Turn on the condensed water, then slowly add 26 grams of triethylenetetramine, heat up to 120°C, react for 2 hours, cool down, and set aside.

[0037] Step 2): Add 34 grams of the product prepared in the previous step to 43 grams of heavy aromatic solvent oil, add 6 grams of polyisobutylene succinimide, 5 grams of cetearyl alcohol polyoxyethylene polyethylene glycol under stirring conditions Propylene oxide ether and 12 grams of coconut oil alkyl primary amines are mixed uniformly to obtain the coal tar income increasing agent.

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Abstract

The invention provides a coal tar yield increasing agent for a coal low-temperature dry distillation process. The coal tar yield increasing agent is prepared by the following method: step 1), adding abenzoic acid compound and a polycarboxylic acid compound into an aromatic solvent, slowly adding a polyamine compound under a stirring condition, heating to 80-180 DEG C, reacting for 1-3 hours, andcooling a product for later use; and 2) adding the product obtained in the step 1), a succinimide compound, a polyether compound and an organic amine compound into an aromatic hydrocarbon solvent, anduniformly stirring. The coal tar yield increasing agent provided by the invention is an organic multifunctional chemical, and the yield of coal tar can be increased by 3% or above under the conditionof not changing a low-temperature dry distillation process and equipment of coal.

Description

technical field [0001] The invention belongs to the field of coal chemical industry, and in particular relates to a coal tar income-increasing agent used in a coal low-temperature dry distillation process. Background technique [0002] Coal dry distillation process is one of the important processes of coal chemical industry. It refers to the process in which coal is heated and decomposed under the condition of isolated air to produce coke (or semi-coke), coal tar, crude benzene, gas and other products. Coal dry distillation is a chemical process. The change is essentially the thermal decomposition process of coal. When the coal is heated to a temperature of 100-105°C, it is first dried and dehydrated to release most of the external moisture; when the temperature increases to 200-250°C, the unstable oxygen-containing functional group on the side chain of the aromatic nucleus begins to decompose, releasing Carbon dioxide and partially hydrated water; decomposition intensifies...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04C10G1/00
CPCC10B53/04C10G1/00
Inventor 李有金林向阳程文武付鑫杨闯孔凡龙
Owner 浙江杭化科技股份有限公司