Coal pretreatment method for coal electrolysis hydrogenation liquefaction

A technology for hydroliquefaction and pretreatment, applied in electrolysis components, electrolysis process, electrolysis organic production, etc., can solve the problems of energy waste, high requirements on equipment and equipment, and achieve higher liquefaction yield, larger specific surface area, and higher current density. Effect

Inactive Publication Date: 2014-09-03
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional coal liquefaction process is carried out at a high temperature of 400°C and a high pressure of 10Mpa. These harsh conditions have high requirements on equipment and cause a lot of energy waste. Therefore, we propose to use electrochemical reduction A new method of electrolytic hydrogenation liquefaction of coal under the action of a specific catalyst

Method used

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  • Coal pretreatment method for coal electrolysis hydrogenation liquefaction
  • Coal pretreatment method for coal electrolysis hydrogenation liquefaction
  • Coal pretreatment method for coal electrolysis hydrogenation liquefaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1 Coal pre-treatment process before irradiation: First, the coal is ball-milled in a ball mill at 80 rpm for 5 hours, and then filtered through a 200-mesh sieve to obtain finer coal particles with a coal particle size of about 50 μm.

[0022] 2 Pretreatment process of irradiated bottles: Clean irradiated bottles, rubber stoppers and gaskets according to the following process: detergent-water-deionized water-ultrapure water, wash 3 times, and then put the bottle in a vacuum drying oven Dry at 70 degrees inside, and put the rubber plug and gasket in an air-conditioned room to dry to prevent the rubber plug from heating and oxidation.

[0023] 3 Sample encapsulation process: Put 2g of coal sample into the irradiation bottle, and at the same time, use a pipette gun to transfer 10%H 2 o 2 Solution (oxidant) 5mL, first cover the bottle mouth with a plastic gasket, then compact it with a rubber stopper without leaving any gaps, and finally seal it with an aluminum cap with...

Embodiment 2

[0027] The rest of the steps in this example are the same as in Example 1, only step 3 has the following changes, namely:

[0028] Sample encapsulation process: put 2g of coal sample into the irradiation bottle, and at the same time transfer 5mL of ultrapure water with a pipette gun, first cover the mouth of the bottle with a plastic gasket, then compact it with a rubber stopper without leaving any gaps, and finally use it with an aluminum cap. Seal with sealing pliers. Finally get the pure water-coal irradiation sample

Embodiment 3

[0030] The rest of the steps in this example are the same as in Example 1, only step 3 has the following changes, namely:

[0031] Sample encapsulation process: first dehydrate 2g of coal in a vacuum drying oven at a vacuum degree of 0.05MPa and a temperature of 110°C for 24 hours, then put the sample into an irradiation bottle, first cover the mouth of the bottle with a plastic gasket, and then compact it with a rubber stopper Leave no gaps, and finally seal the aluminum lid with sealing pliers. The dry coal irradiated sample is finally obtained as dry coal (without any liquid added).

[0032] For the analysis of coal elements before and after irradiation treatment, see Table 1.

[0033]

[0034] Table 1 Elemental analysis of coal samples before and after irradiation treatment

[0035] C (wt. %) H (wt. %) H / C (at. %) dry coal 70.593 4.856 0.82 Irradiated dry coal 66.331 5.179 0.937 Irradiated dry coal + hydrogen peroxide 51.254 5.38...

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Abstract

The invention relates to a coal pretreatment method for coal electrolysis hydrogenation liquefaction, namely a coal sample pretreatment method adopting gamma ray irradiation and a strong oxidant for further conversion. The method comprises the following steps: (1) pretreating before coal irradiation; (2) pretreating an irradiation bottle; (3) packaging a sample; (4) irradiating; and (5) electrolyzing and liquefying after irradiating. Coal sample particles treated with the method are smaller and can be decomposed into groups with lower molecular weight, and the current density and the liquefaction productivity of coal electrolysis hydrogenation can be effectively improved.

Description

technical field [0001] The invention relates to a coal pretreatment method for coal electrolytic hydrogenation liquefaction, in particular to a coal sample pretreatment method using gamma ray irradiation combined with strong oxidant. The invention is used in the field of coal hydrogenation liquefaction. This pretreatment method can effectively improve the current density and yield of liquefied products of coal electrolytic hydrogenation. Background technique [0002] In today's increasingly scarce oil resources, and in view of the current situation of my country's energy resource structure of "rich in coal, poor in oil, and gas", coal liquefaction technology, as an effective means of comprehensive utilization of coal, is not only in the production of high calorific value, high-efficiency fuel oil It has important applications in many aspects, and at the same time has important strategic significance for the country's energy security. However, the traditional coal liquefacti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00C25B3/04C25B3/25
Inventor 郭冰峰刘艳兰王锦花印仁和
Owner SHANGHAI UNIV
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