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High-temperature pyrolysis gas reclamation system and method

A high-temperature pyrolysis and warm-heating technology, used in climate sustainability, acetylene generators, chemical industry, etc., can solve problems such as underutilization of sensible heat and chemical heat, and improve energy self-sufficiency, improve thermal efficiency, The effect of reducing production costs

Inactive Publication Date: 2017-11-03
SHENWU ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tail gas of the calcium carbide furnace is also very high, and its main component is combustible gas. The large amount of sensible heat and chemical heat carried by the tail gas of the calcium carbide furnace has not been fully utilized.

Method used

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  • High-temperature pyrolysis gas reclamation system and method
  • High-temperature pyrolysis gas reclamation system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1. The raw material is pyrolyzed in a pyrolysis furnace with a pyrolysis temperature of 900°C and a pyrolysis time of 1 hour to obtain solid products and high-temperature pyrolysis gas.

[0057] 2. Send the solid product into the calcium carbide furnace and heat it to 2250°C to generate calcium carbide and exhaust gas. The heating time is 40 minutes.

[0058] 3. The calcium carbide is sent to the acetylene generator to react with water to generate acetylene and calcium carbide slag.

[0059] 4. Send the carbide slag into the drying device, pass the high-temperature pyrolysis gas into the drying device, and dry the carbide slag to obtain dry carbide slag and low-temperature pyrolysis gas; adjust the intake of high-temperature pyrolysis gas in the drying device through the air flow valve The amount of high-temperature pyrolysis gas drying the carbide slag is controlled at 60 minutes to fully dry the carbide slag. The temperature of the dried carbide slag is 110°C, and the...

Embodiment 2

[0064] 1. The raw material is pyrolyzed in a pyrolysis furnace with a pyrolysis temperature of 600°C and a pyrolysis time of 1.5 hours to obtain solid products and high-temperature pyrolysis gas.

[0065] 2. Send the solid product into the calcium carbide furnace and heat it to 2200°C to generate calcium carbide and exhaust gas. The heating time is 45 minutes.

[0066] 3. The calcium carbide is sent to the acetylene generator to react with water to generate acetylene and calcium carbide slag.

[0067] 4. Send the carbide slag into the drying device, pass the high-temperature pyrolysis gas into the drying device, and dry the carbide slag to obtain dry carbide slag and low-temperature pyrolysis gas; adjust the intake of high-temperature pyrolysis gas in the drying device through the air flow valve The amount of high-temperature pyrolysis gas drying the carbide slag is controlled at 50 minutes to fully dry the carbide slag. The temperature of the dried carbide slag is 120°C, and ...

Embodiment 3

[0072] 1. The raw material is pyrolyzed in a pyrolysis furnace with a pyrolysis temperature of 500°C and a pyrolysis time of 2 hours to obtain solid products and high-temperature pyrolysis gas.

[0073] 2. Send the solid product into the calcium carbide furnace and heat it to 2100°C to generate calcium carbide and exhaust gas. The heating time is 50 minutes.

[0074] 3. The calcium carbide is sent to the acetylene generator to react with water to generate acetylene and calcium carbide slag.

[0075] 4. Send the carbide slag into the drying device, pass the high-temperature pyrolysis gas into the drying device, and dry the carbide slag to obtain dry carbide slag and low-temperature pyrolysis gas; adjust the intake of high-temperature pyrolysis gas in the drying device through the air flow valve The amount of high-temperature pyrolysis gas drying the carbide slag is controlled at 30 minutes to fully dry the carbide slag. The temperature of the dried carbide slag is 130°C, and th...

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Abstract

The invention discloses a high-temperature pyrolysis gas reclamation system and method. The high-temperature pyrolysis gas reclamation system is characterized in that a discharge opening of a pyrolysis furnace is connected with a feed opening of a calcium carbide furnace, a calcium carbide outlet of the calcium carbide furnace is connected with a calcium carbide inlet of an acetylene generating device, a carbide slag outlet of the acetylene generating device is connected with a carbide slag inlet of a drying device, a high-temperature pyrolysis gas outlet of the pyrolysis furnace is connected with a high-temperature pyrolysis gas inlet of the drying device, a dry carbide slag outlet of the drying device is connected with a dry carbide slag inlet of baking equipment, and a baking calcium material of the baking equipment is connected with a material inlet of a mixing device. High-temperature pyrolysis gas of the pyrolysis furnace is utilized to dry carbide slag, and tail gas of the calcium carbide furnace is used as a fuel, so that the heat energy of both the pyrolysis gas and the tail gas is fully utilized, and the heat efficiency of the high-temperature pyrolysis gas reclamation system is improved.

Description

technical field [0001] The invention belongs to the technical field of pyrolysis equipment, and in particular relates to a system and method for recycling high-temperature pyrolysis gas. Background technique [0002] The pyrolysis and carbonization process of raw coal produces three products: semi-coke is a solid substance after pyrolysis; coal tar is a liquid substance after pyrolysis; pyrolysis gas is a flammable gas mixture emitted after coal pyrolysis, the main component is hydrogen , methane and carbon monoxide. After extracting coal tar and pyrolysis gas, semi-coke has a higher fixed carbon content than coal, and is cleaner than raw coal. It can replace coke, anthracite and charcoal and is widely used in the production of ferroalloys, calcium carbide, steel smelting, chemical fertilizers, etc. And residential coal and other fields. [0003] The main component of calcium carbide is calcium carbide, which is an important organic chemical raw material and can synthesize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/06C01B32/942C10H15/00
CPCC10B57/06C10H15/00Y02P20/10
Inventor 路丙川张顺利刘维娜郭启海赵小楠吴道洪
Owner SHENWU ENVIRONMENTAL TECH CO LTD
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