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An internal heating type low temperature carbonization thermal state simulation detection device and method

A detection device and an endothermic technology, which are applied to the field of endothermic low-temperature dry distillation thermal state simulation detection devices, can solve the problems of long time for exploration, improvement and adjustment, easy slagging of flames, economic losses, etc. The effect of less investment and lower economic losses

Active Publication Date: 2020-08-11
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in industrial applications, there is a problem of easy slagging at the end (the side of the furnace) of the fire hole (the channel through which high-temperature gas enters the furnace), which directly affects the normal operation of the furnace
So far, such problems in coal low-temperature carbonization furnaces will not only appear in the oxygen-enriched carbonization process, but also in the low-temperature carbonization process with air-assisted combustion; once they occur in the production process, it will take a long time to explore, improve and adjust time, not only production will be affected, but also huge economic losses will be caused

Method used

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  • An internal heating type low temperature carbonization thermal state simulation detection device and method
  • An internal heating type low temperature carbonization thermal state simulation detection device and method
  • An internal heating type low temperature carbonization thermal state simulation detection device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1 The optimization of the dry distillation process of a low-temperature dry distillation enterprise with an annual output of 2.4 million tons of blue charcoal

[0049] (1) Basic situation:

[0050] There are 4 blue charcoal production plants with an annual processing capacity of 600,000 tons, using vertical square furnaces as basic production equipment, all-oxygen dry distillation process, and gas supply to downstream CNG production enterprises as raw gas. The size of the dry distillation chamber (furnace) is: length×width×height=6900×3500×7500mm. The gas composition is: H 2 40.07%, CO 16.08%, CO 2 13.15%, CH 4 14.21%, C2-C5 8.11%, the rest is nitrogen. Low calorific value of gas 5732kcal / m 3 . Slagging on the furnace wall at the fire hole occurred during production, which caused the furnace to be shut down for overhaul.

[0051] (2) Application method

[0052] According to the method of the present invention, enterprises build unit simulation test devices by them...

Embodiment 2

[0057] Example 2 Application of a blue charcoal production plant with an annual output of 1.2 million tons

[0058] (1) Basic situation:

[0059] Two blue charcoal production plants with an annual processing capacity of 600,000 tons are under construction, using vertical square furnaces as the basic production equipment, oxygen-enriched carbonization process, and the gas is supplied to the downstream synthetic ammonia production enterprises as raw gas, and the hydrogen-nitrogen ratio in the gas is maintained as required It is about 3.0 or more. The size of the dry distillation chamber (furnace) is: length×width×height=6800×3600×7200mm. With reference to the operation of related enterprises, the selected gas composition is: H 2 38.0%, CO 15.4%, CO 2 11.0%, CH 4 12.2%, C2-C5 2.11%, the rest is nitrogen. Gas low calorific value 5362kcal / m 3 . The design of the burner, the fire channel and the fire eye need to be thermally tested.

[0060] (2) Application method

[0061] According ...

Embodiment 3

[0065] Example 3 Application of a blue charcoal production plant with an annual output of 600,000 tons

[0066] (1) Basic situation

[0067] The vertical square furnace is used as the basic production equipment, air-assisted combustion, and the coal-coke ratio is 1.67:1. The tar production rate is about 7.8% (the Shenmu dry-based raw coal is the benchmark), and the remaining gas volume per ton of coal is 560m 3 Around (Shenmu coal), gas calorific value 1700-1900kcal / Nm 3 , The coal gas is consumed by small gas power generation. Lump coal is used as raw material into the furnace, and the particle size requirement is greater than 25mm. Due to the high price of lump coal and limited supply, which directly affects the normal operation and economic benefits of the enterprise, it is planned to reduce the particle size of the lump coal into the furnace to 10mm. What changes will happen to the furnace conditions at this time, especially what happens in the high temperature section The ch...

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Abstract

The invention discloses an internal heat low temperature dry distillation thermal state simulation detection device and method. The outlets of a combustion blower, a gas blower and an oxygen supply device are respectively communicated with the oxidant gas inlet, the gas inlet and the oxygen inlet of a heating unit through pipelines, and each pipeline is provided with a regulating monitoring control device; the furnace body is internally provided with a flame path, the wall surface of the flame path is provided with multiple flame holes, and the heat output port of the heating unit is piped into the flame path; the furnace body is internally filled with semi-coke which is arranged outside the flame path; and the furnace body is provided with multiple detection devices, and the detection ends of the detection devices are piped into the flame path or the detection ends of the detection devices are piped into the semi-coke in the furnace body. The physical-chemical process in the internalheat low temperature dry distillation furnace can be reflected in a simulation way through the offline test so that the theoretical guidance can be provided for solving the problems appearing in industrial production, the time required for solving the problems can be reduced without influencing production and the economic loss can also be reduced.

Description

Technical field [0001] The invention belongs to the field of coal low-temperature dry distillation detection devices, and specifically relates to an internal heating type low-temperature dry distillation thermal state simulation detection device and method. Background technique [0002] my country is rich in low-metamorphic coal resources. Low-temperature dry distillation can obtain coal gas, blue charcoal and tar. It is an effective method for the separate utilization of low-metamorphic coal and has been rapidly developed in recent years. At present, vertical internal heating furnaces are mainly used, and the main problems are as follows: (1) Low-temperature dry distillation currently has low-calorific value gas in large quantities and low quality, lack of effective utilization methods, and easy to cause environmental problems; (2) water basin soaking and quenching , The water and heat consumption is large, the product moisture content is high, it is easy to cause pollution and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00
CPCG01M99/002
Inventor 赵俊学马成邹冲胡冰刘军利尚敏何江勇康毅
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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