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Low-order coal pyrolysis tar device and pyrolysis method of low-order coal pyrolysis tar

A low-rank coal and coal tar technology, applied in the field of pyrolysis tar, can solve the problems of low tar yield and high production cost, and achieve the effects of simplifying the process, improving production efficiency and reducing production cost

Inactive Publication Date: 2014-11-26
XINJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides a low-rank coal pyrolysis tar device and its pyrolysis method, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the existing low-rank coal pyrolysis tar device and its pyrolysis method. The rank coal pyrolysis process has the problems of low tar yield and high production cost

Method used

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  • Low-order coal pyrolysis tar device and pyrolysis method of low-order coal pyrolysis tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, as attached figure 1 As shown, the low-rank coal pyrolysis tar device includes a pump 1, a preheater 2, a fixed bed reactor 3 and a condenser 4; the preheater 2 has an air inlet, a liquid inlet, and a gas outlet, respectively, and the pump The liquid outlet end of 1 and the liquid inlet end of preheater 2 are fixedly connected together through the first pipeline 5, and the gas outlet end of preheater 2 and the inlet end of fixed bed reactor 3 are fixedly connected together through second pipeline 6 , the gas outlet of the fixed-bed reactor 3 and the inlet of the condenser 4 are fixedly connected together through a third pipeline 7, and there are gas outlet and liquid outlet at the side and bottom of the condenser 4, respectively.

Embodiment 2

[0023] Embodiment 2, as attached figure 1 As shown, as an optimization of the above-mentioned embodiment, in embodiment 2, an inlet pipe 8 is fixedly connected to the inlet end of the preheater 2, and an inlet pipe 9 is fixedly connected to the inlet end of the pump 1. A gas outlet pipe 10 is fixedly connected to the gas outlet of the condenser 4, a liquid outlet pipe 11 is fixedly connected to the liquid outlet of the condenser 4, and a thermometer is fixedly installed on the fixed bed reactor 3, and the temperature measuring end of the thermometer is located in the fixed bed reactor. or / and, valves 12 are fixedly installed on the inlet pipe 8, the liquid inlet pipe 9, the first pipeline 5, the air outlet pipe 10 and the liquid outlet pipe 11 respectively. In this way, valve 12 is easily controlled.

Embodiment 3

[0024] Embodiment 3, as attached figure 1 As shown, the pyrolysis method of the low-rank coal pyrolysis tar using the low-rank coal pyrolysis tar device is carried out according to the following steps: the first step, the filling of the fixed-bed reactor 3, in the lower layer of the fixed-bed reactor 3 Fill the low-order pulverized coal 13, fill the middle layer of the fixed-bed reactor 3 with quartz wool 14, and fill the upper layer of the fixed-bed reactor 3 with the CO shift reaction catalyst 15, the CO shift reaction catalyst 15 and the low-order pulverized coal 13. The mass ratio is 1:2 to 1:10; in the second step, after the preheater 2 is heated to 150°C to 300°C, the raw material gas containing CO and water are fed into the preheater 2, and the water in the preheater In 2, it is quickly vaporized into water vapor and mixed with the raw material gas containing CO to form a reaction gas. The mass percentage of CO in the raw material gas in the reaction gas is 30% to 80%; ...

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Abstract

The invention relates to the technical field of pyrolysis tar, and relates to a low-order coal pyrolysis tar device and a pyrolysis method of low-order coal pyrolysis tar. The low-order coal pyrolysis tar device comprises a pump, a preheater, a fixed-bed reactor and a condenser, wherein the preheater is respectively provided with a gas inlet end, a liquid inlet end and a gas outlet end; the liquid outlet end of the pump and the liquid inlet end of the preheater are fixedly connected together through a first pipeline; and the gas outlet end of the preheater and the gas inlet end of the fixed-bed reactor are fixedly connected together through a second pipeline. The pyrolysis method disclosed by the invention performs hydropyrolysis on low-order coal at water and CO atmospheres by taking the low-order coal as a raw material, substitutes the high-activity hydrogen generated through CO transformation reaction for pure hydrogen supplied to the traditional coal pyrolysis, omits the low-order coal drying and dewatering procedure of the traditional hydrogenation reaction, has the characteristics of wide and low-cost feed gas source and high coal tar yield, simplifies the procedure, reduces the production cost and increases the production efficiency.

Description

technical field [0001] The invention relates to the technical field of pyrolysis tar, and relates to a low-order coal pyrolysis tar device and a pyrolysis method for low-order coal pyrolysis tar. Background technique [0002] In recent years, large-scale coal fields have been continuously discovered in my country's Inner Mongolia, Xinjiang and other places. These coal fields are mainly high-volatility low-rank coals, accounting for more than 50% of my country's coal resource reserves. Pyrolysis is a coal conversion method most suitable for handling these coal resources. Coal pyrolysis technology appeared in the 19th century, but due to technical limitations, the products produced were relatively simple. At that time, it was mainly used to make kerosene and wax. Since the 1970s, compared with general fast pyrolysis, coal hydropyrolysis not only has a high yield of tar, but also has a large content of benzene, phenol and naphthalene, but pure hydrogen is expensive, the hydro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/04C10B49/02C10B57/00C10G1/00
Inventor 周岐雄李敏
Owner XINJIANG UNIVERSITY