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System and method for co-producing coal gas and powdery active coke

A technology of activated coke and powder, applied in the field of efficient and clean utilization of coal, can solve the problems of increased energy consumption, low calorific value of pyrolysis gas, and low grade, and achieve high utilization rate, high calorific value, and high content of effective gas Effect

Active Publication Date: 2021-01-15
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the heat medium used in this technology is high-temperature flue gas, that is, the front end of the powdered activated coke preparation device must be equipped with a corresponding combustion device, which will inevitably increase energy consumption. In addition, the pyrolysis gas obtained by using flue gas atmosphere to make coke has a low calorific value. Low grade, difficult to reuse

Method used

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  • System and method for co-producing coal gas and powdery active coke
  • System and method for co-producing coal gas and powdery active coke

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Embodiment 1

[0075] Coal powder (moisture content less than 15%, calorific value 5000kcal, average particle size 200 mesh) is gasified in a gasifier, the gasification agent is air and water vapor, the temperature of the gasification agent is 300-350 ° C, the gasification The melting time is 3-7s. The temperature of the generated gasification gas is 1350-1450°C;

[0076] The gasification gas is tempered by water / steam before entering the activation furnace, the temperature is reduced to 1100-1200°C, and the water vapor content is 20-40%;

[0077] Gasification gas and carbonized semi-coke are mixed up, the activation time is 3-10s, and the temperature of the activated gas is 800-1000°C;

[0078] After the powder coke cools down to 80°C, the water (80°C) in the powder coke cooler enters the waste heat boiler;

[0079] The coal gas enters the carbonization furnace and is carbonized with coal powder. The temperature of the gas at the inlet of the carbonization furnace is 800-1000°C, the carbo...

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Abstract

The invention relates to a system and a method for co-producing coal gas and powdery active coke. The system comprises a gasification activation furnace, a coke breeze separator, a carbonization furnace and a carbonized semicoke separator, the gasification activation furnace is of a U-shaped structure with the bottom communicated, the gasification furnace and the activation furnace are arranged onthe two sides respectively, the top of the activation furnace is connected with the coke breeze separator, the top of the coke breeze separator is connected with the carbonization furnace, and the carbonization furnace is connected with the carbonized semicoke separator; the carbonization furnace is connected with the bottom of the activation furnace. The carbonized semicoke is activating by taking powdered coal air gasified gas as a heat source and a medium to prepare powdered activated coke; meanwhile, the activated coal gas waste heat is used for carrying out pulverized coal carbonizationto prepare carbonized semicoke. Powdery active coke is rapidly prepared by fully utilizing coal gas waste heat, and meanwhile, coal gas with a relatively high calorific value is produced.

Description

technical field [0001] The invention belongs to the technical field of high-efficiency and clean utilization of coal, and in particular relates to a system and method for co-producing gas and powdered active coke. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Coal is the main force of energy consumption in my country, and the efficient and clean comprehensive utilization of coal is a hot issue of current and future concern. Aiming at the efficient and clean utilization of coal, the technology proposed by the applicant in the patent application No. 201310176387.1 "A Process and Device for Rapidly Preparing Powdered Activated Coke for Desulfurization Using Pulverized Coal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04C10J3/48C10J3/58C10J3/84C10J3/86
CPCC10B53/04C10J3/485C10J3/58C10J3/84C10J3/86C10J2300/093C10J2300/0956C10J2300/0976Y02P20/129
Inventor 马春元王涛周滨选付加鹏赵媛
Owner SHANDONG UNIV
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