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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  • 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 fo

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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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Example Embodiment

[0035] Example 1

[0036] figure 1 The flow chart of the device for co-producing ethylene glycol in the process of coal pyrolysis to produce semi-coke provided in this embodiment. see figure 1In this embodiment, the device for co-producing ethylene glycol with coal pyrolysis process for producing semi-coke includes a double bed gasification production unit 100, a coal pyrolysis production semi-coke unit 200, a pressure swing adsorption hydrogen extraction unit 300, and a pressure swing adsorption extraction unit 300. Carbon monoxide unit 400 and ethylene glycol production unit 500 . The two-bed gasification production unit 100 provides thermal energy for the coal pyrolysis production semi-coke production unit 200, produces semi-coke, and obtains by-products. The by-products are first subjected to pressure swing adsorption and hydrogen extraction unit 300 to extract hydrogen, and then pressure swing adsorption is carried out. The carbon monoxide extraction unit 400 extracts ...

Example Embodiment

[0075] Example 2

[0076] The present embodiment also provides a method for co-producing ethylene glycol with a process of producing semi-coke by pyrolysis of coal. 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, firstly use the fuel coal to pass through a screening device for primary screening to remove lump coal with a particle size greater than 30 mm and other lump coal. Use; primary screening qualified pulverized coal (particle size below 30mm) is transported to crushing equipment 112, and after crushing, it reaches below 8mm, and is transported to coal storage bunker 113 through belt conveyor.

[0078] The coal in the coal storage bunker 113 is fed into the gasifier 130 by the screw feeder 120 for processing to obtain fuel gas. The fuel gas rises to the top of the gasifier 130 and carries fly ash into the cyclon...

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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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