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Coal processing method and system

A processing method and gas technology, which can be used in hydrotreating process, chemical instruments and methods, petroleum industry, etc., can solve problems such as difficult processing, and achieve the effects of high added value, reduced storage and transportation investment, and concentrated product types.

Active Publication Date: 2015-10-21
BEIJING PETROCHEM ENG
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Problems solved by technology

This processing method can produce high value-added products such as diesel oil, gasoline blending components, aromatics and olefins, and overcomes the difficult problem of coal tar processing. It is an integrated processing method for coal, oil, aromatics and olefins

Method used

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  • Coal processing method and system
  • Coal processing method and system

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preparation example Construction

[0056] (5) Preparation of propane dehydrogenation and polypropylene: the propane obtained in step (4) is subjected to propane dehydrogenation and preparation of polypropylene to obtain polypropylene and hydrogen products;

[0057] (6) The hydrogen product obtained in step (3) and / or step (4) and / or step (5) is purified by pressure swing adsorption (PSA) as hydrogen required for hydrocracking in step (2) ; and the hydrogen production process comprising at least pressure swing adsorption (PSA) is used to produce hydrogen from coal dry distillation or coal gasification in step (1) as a raw material, and the hydrogen obtained is used as hydrogenation in step (2) Hydrogen for cracking;

[0058] (7) using the coal dry distillation or coal gasification in step (1) to obtain the impurities containing sulfur and nitrogen obtained after producing hydrogen as a raw material, and obtain sulfur and liquid ammonia products through the sulfur recovery unit; and the step (2) The impurities c...

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Abstract

The invention provides a coal processing method and system. The processing method at least comprises the steps of coal carbonization or coal gasification, coal tar hydrocracking, aromatics combination, light dydrocarbon aromatization, propane dehydrogenation, polypropylene preparation and the like. Main products include diesel oil, p-xylene, benzene, heavy aromatics, polypropylene and the like. The system at least comprises a coal carbonization or coal gasification device, a coal tar hydrocracking device, an aromatics combination device, a light dydrocarbon aromatization device, a propane dehydrogenation device, a polypropylene preparation device and the like. By means of the processing method and system, high additional value products such as diesel oil, gasoline blending components, aromatics and alkene can be produced, the problem that coal tar cannot be processed easily is solved, and the processing method and system with coal, oil, aromatics and alkene integrated are achieved.

Description

technical field [0001] The invention relates to a coal processing method and system, belonging to the technical fields of coal chemical industry and petrochemical industry. Background technique [0002] Coal dry distillation and coal gasification technology is the key technology of coal chemical industry. In addition to semi-coke, coal gas and coal tar can also be generated during medium and low temperature dry distillation, and the mass yield of coal tar is generally between 8% and 20%. Coal gasification to produce coal gas or synthetic gas (CO 2 +H 2 ) produces other chemical products, coal tar is also produced, and the quality yield of coal tar is between 4% and 12%. China is a country rich in coal and poor in oil. It is also a big coal producer and consumer. At the same time, my country is the largest coke producer, consumer and exporter in the world, and a large amount of coal tar is produced as a by-product. In addition to semi-coke companies that can provide a lar...

Claims

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Application Information

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IPC IPC(8): C10G69/00C10B53/04C07C15/04C07C15/08C07C9/15C07C9/08C07C5/22C07C7/04C08F10/06C01B3/24
Inventor 曹坚刘戈金丹
Owner BEIJING PETROCHEM ENG
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