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Integrated system for pyrolysis and upgrading of coal

A complete system, coal pyrolysis technology, applied in the field of coal pyrolysis and quality improvement integrated complete system, can solve the problems of heavy dust removal workload of oil and gas products, difficult sealing of high-temperature solid materials, low process reliability, etc., to improve process reliability High reliability, reduced equipment investment, simple and reliable operation

Active Publication Date: 2015-09-02
SHAANXI COAL & CHEM IND GRP SHENMU TIANYUAN CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the above-mentioned process flow, special connection devices need to be installed between the rotary drying furnace and the rotary carbonization reaction furnace, between the rotary carbonization reaction furnace and the rotary cooling furnace, and the three sets of furnace systems need to be strictly sealed, but for high temperature The sealing of solid materials is always a technical difficulty. Therefore, the above-mentioned process has disadvantages such as a large number of equipment, huge devices, complex layout, low process reliability, and high energy consumption. In addition, due to the large amount of dust contained in the raw coal, it is easy to cause blockage of equipment pipelines , and the follow-up oil and gas product dust removal workload is heavy

Method used

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  • Integrated system for pyrolysis and upgrading of coal

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Effect test

Embodiment 1

[0037] This embodiment provides a complete coal pyrolysis and upgrading integrated system, which is sequentially connected with a drying pyrolysis unit, an upgraded coal cooling unit, and a humidification and discharge unit along the process route.

[0038] The dry pyrolysis unit includes a horizontally arranged rotary cylinder 5 and an outer jacket 6 sleeved on the outside of the side wall of the rotary cylinder 5, and a smoke is formed between the rotary cylinder 5 and the outer jacket 6. Air channel; the front end of the rotary cylinder 5 is provided with a feed port, and the rear end of the rotary cylinder 5 is provided with a discharge port.

[0039] The rotary cylinder 5 along the direction of the process route includes a drying section 7, a reaction section 14 and a heat preservation section 17 in sequence. In this embodiment, along the central axis of the rotary cylinder 5, the drying section 7, the reaction section 14 And the length of the heat preservation section 17...

Embodiment 2

[0054] This embodiment provides an integrated system for coal pyrolysis and upgrading, its structure is as follows figure 1 As shown, a dry pyrolysis unit, an upgraded coal cooling unit, and a humidification and discharge unit are sequentially connected along the process route.

[0055] The dry pyrolysis unit includes a horizontally arranged rotary cylinder 5 and an outer jacket 6 sleeved on the outside of the rotary cylinder 5, and a flue gas channel is formed between the rotary cylinder 5 and the outer jacket 6 ; The front end of the rotary cylinder 5 is provided with a feed port, and the rear end of the rotary cylinder 5 is provided with a discharge port. As a preferred embodiment, in this embodiment, a feeder 3 is provided in communication with the feed port of the rotary cylinder 5, and the feeder 3 is a chute; There is an ash discharge box 2, the bottom of the ash discharge box 2 is provided with an ash discharge port 34, and the side wall of the ash discharge box 2 is ...

Embodiment 3

[0072] This embodiment provides a complete coal pyrolysis and upgrading integrated system, which is sequentially connected with a drying pyrolysis unit, an upgraded coal cooling unit, and a humidification and discharge unit along the process route.

[0073] The dry pyrolysis unit includes a horizontally arranged rotary cylinder 5 and an outer jacket 6 sleeved on the outside of the side wall of the rotary cylinder 5. Between the rotary cylinder 5 and the outer jacket 6 is a Smoke channel; the front end of the rotary cylinder 5 is provided with a material inlet, and the rear end of the rotary cylinder 5 is provided with a discharge port. As a preferred embodiment, in this embodiment, a feeder 3 is provided in communication with the feed port of the rotary cylinder 5, and the feeder 3 is a screw feeder; It is connected with an ash discharge box 2, the bottom of the ash discharge box 2 is provided with an ash discharge port 34, and the side wall of the ash discharge box 2 is provi...

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Abstract

The invention relates to an integrated system for pyrolysis and upgrading of coal. The integrated system is provided with a drying and pyrolysis unit, an upgraded-coal cooling unit and a humidifying and discharging unit in sequence along the process route in a connection manner. The integrated system has the advantages that coal drying and coal pyrolysis reactions are finished in a same rotary drum by the drying and pyrolysis unit, so that the equipment investment is effectively reduced and the process reliability is improved; cold air in the upgraded-coal cooling unit is utilized for indirectly cooling materials in material-distributing tube nest, the equipment is simple and good in safety, the yield of waste water and waste gas is low, hot air obtained after heat exchange is utilized for heat recovery and reutilization of heat; in the process of utilizing a spiral conveyor in the humidifying and discharging unit to carry out conveying on upgraded coal, a sprayer is adopted for carrying out water spraying and humidification on the upgraded coal, the operation is simple and reliable, the water spraying amount can be adjusted according to the process need, the quality of a product is good and the process is environmental-friendly.

Description

technical field [0001] The invention relates to a coal pyrolysis and upgrading integrated system, which belongs to the technical field of coal pyrolysis and upgrading. Background technique [0002] my country is a country rich in coal resources but relatively scarce in oil and natural gas resources. In recent years, with the deterioration of the atmospheric environment in northern my country, in order to reduce the impact of direct coal combustion on the environment and improve the utilization of coal resources, domestic and foreign More and more institutions and scholars have begun to study coal quality utilization technology, which is a coal utilization method in which raw coal is subjected to medium and low temperature pyrolysis to obtain high-value gas, coal tar and upgraded coal. [0003] At present, the coal pyrolysis upgrading process adopted in China is mostly implemented by connecting three independent systems in series, that is, the drying furnace, carbonization rea...

Claims

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Application Information

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IPC IPC(8): C10B53/04C10B47/30
Inventor 谢文王守峰李万善刘新张朝蓉江昊沛
Owner SHAANXI COAL & CHEM IND GRP SHENMU TIANYUAN CHEM IND
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