Device and method for cogeneration of ethylene glycol by coal pyrolysis production semicoke technique

A technology of coal pyrolysis and ethylene glycol, which is applied in gasification process, chemical instruments and methods, coke oven, etc., can solve the problems of comprehensive utilization of pyrolysis tail gas that needs further research and development, few mature technologies, and high operating costs, and achieves Considerable economic benefits, the effect of solving dust pollution and improving economic benefits

Pending Publication Date: 2018-04-27
BEIJING HUAFU ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Under normal circumstances, it is directly discharged or used as fuel after dust removal treatment. With the maturity of wet dust removal technology, the comprehensive utilization space of rapid coal pyrolysis tail gas is also increasing. However, if further separation of CO, CH 4 、H 2 and other components, so that it can be turned into raw material gas for the production of chemical products such as synthetic ammonia and methanol, which not only requires large investment and high operating costs, but also has few mature technologies to choose from.
[0005] Traditional coal pyrolysis technology needs to be further improved, and the comprehensive utilization of pyrolysis tail gas also needs to be further developed

Method used

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  • Device and method for cogeneration of ethylene glycol by coal pyrolysis production semicoke technique
  • Device and method for cogeneration of ethylene glycol by coal pyrolysis production semicoke technique
  • Device and method for cogeneration of ethylene glycol by coal pyrolysis production semicoke technique

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Embodiment 1

[0036] figure 1 The flow chart of the device for producing semi-coke and co-producing ethylene glycol by pyrolysis of coal provided in this example. see figure 1, in this embodiment, the coal pyrolysis production semi-coke process co-production of ethylene glycol device includes a twin-bed gasification production unit 100, coal pyrolysis semi-coke production unit 200, pressure swing adsorption hydrogen extraction unit 300, pressure swing adsorption extraction A carbon monoxide unit 400 and an ethylene glycol production unit 500 . The twin-bed gasification production unit 100 provides thermal energy for the coal pyrolysis semi-coke production unit 200 to produce semi-coke and obtain by-products, which are first subjected to pressure swing adsorption hydrogen extraction unit 300 to extract hydrogen, and then pressure swing adsorption The carbon monoxide extraction unit 400 extracts carbon monoxide, and passes the carbon monoxide and hydrogen into the ethylene glycol production...

Embodiment 2

[0076] This embodiment also provides a method for co-production of ethylene glycol by coal pyrolysis to produce semi-coke process, which is carried out by using the coal pyrolysis to produce semi-coke process co-production of ethylene glycol device provided in Example 1, and the content of embodiment 1 is the same Applicable to this embodiment, the method includes the following steps:

[0077] S1. Process the fuel coal through the gasifier 130 of the twin-bed gasification production unit 100 to obtain fuel gas; that is, the fuel coal is firstly screened through a screening device to remove lump coal with a particle size greater than 30mm, and the lump coal is additionally Use: The pulverized coal (with a particle size below 30mm) that has passed the primary screening is transported to the crushing equipment 112, and after being crushed to a size below 8mm, it is transported to the coal storage bin 113 by a belt conveyor.

[0078] The coal in the coal storage bunker 113 is fed ...

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Abstract

The invention provides a device for cogeneration of ethylene glycol by coal pyrolysis production semicoke technique and a method for cogeneration of ethylene glycol by coal pyrolysis production semicoke technique, and belongs to the technical field of chemical industry. A dual-bed gasification production unit of the device comprises a gasifier; a raw material treatment device is connected with a coal pyrolysis device, and the coal pyrolysis device is connected with a shaping device and a purifying tower; the gasifier is connected with the coal pyrolysis device; the purifying tower is connectedwith a transforming absorbing extraction hydrogen unit and a transforming absorbing extracting carbon monoxide unit orderly; a dehydrating reactor is connected with the transforming absorbing extracting carbon monoxide unit, and a carbonylation reactor is connected with the reaction preheater; the heater is connected with the carbonylation reactor; the heater is connected with the hydrogenation reactor and the transforming absorbing extraction hydrogen unit. The method is completed through the devices; the method is simple and can produce semicoke and ethylene glycol at the same time, and utilizes the side product in the coal pyrolysis; thus the economic benefit is improved.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a device and method for co-producing ethylene glycol by coal pyrolysis to produce semi-coke. Background technique [0002] Semi-coke has the excellent characteristics of low ash, low sulfur, low phosphorus, high chemical activity, high specific resistance, and low alumina, and can be widely used in ferroalloy smelting, calcium carbide, blast furnace injection, synthetic ammonia production, civil environmental protection fuels and other industries . The production of metallurgical coke and foundry coke requires coking coal, lean coal, fat coal and other coal types for batching. The price of coke is high, and its performance cannot meet the needs of ferroalloy, calcium carbide, synthetic ammonia and other industries. [0003] The performance of semi-coke can completely exceed the quality and technical index requirements of metallurgical coke in ferroalloy, calcium carbid...

Claims

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Application Information

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IPC IPC(8): C10B53/04C10B57/10C10B57/18C10J3/72C10J3/82C07C67/36C07C69/36C07C29/149C07C31/20
CPCY02P20/129C10B53/04C07C29/149C07C67/36C10B57/10C10B57/18C10J3/721C10J3/82C10J2300/1643C07C69/36C07C31/202
Inventor 谭增涛柴庆波周宏伟
Owner BEIJING HUAFU ENG
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