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An internal heating medium and low temperature dry distillation and dry quenching thermal state simulation device and method

A simulation device, a technology for dry quenching coke, applied in the field of coal chemical industry, which can solve the problems of inability to accurately simulate the process of internal thermal dry distillation and dry quenching of coke, etc.

Active Publication Date: 2020-07-07
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a thermal state simulation device and method for internal heating type medium and low temperature dry distillation and CDQ, which is used for the simulation experiment research of internal heat type dry distillation and CDQ process, so as to solve the problem that the existing experimental devices cannot be more accurate. Problems of ground simulation of industrial internal thermal carbonization and CDQ processes

Method used

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  • An internal heating medium and low temperature dry distillation and dry quenching thermal state simulation device and method
  • An internal heating medium and low temperature dry distillation and dry quenching thermal state simulation device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1: Thermal simulation test of annual processing of 600,000 tons of semi-coke production and CDQ transformation application

[0043] (1) Basic information:

[0044] The semi-coke production plant with an annual processing capacity of 600,000 tons adopts a vertical square furnace as the basic production equipment, the coal particle size of the furnace is 25-80mm, air combustion is supported, and the coal-to-coke ratio is 1.65:1. The tar yield is about 8%, and the combustion and circulation gas volume is 549Nm 3 / t 兰炭 , the amount of combustion air into the furnace is 190Nm 3 / t 兰炭 , the amount of gas used for drying is 100Nm 3 / t 兰炭 , the remaining gas volume per ton of coal is 460Nm 3 / t 兰炭 About (Shenmu dry base raw coal as the benchmark), gas calorific value 6771-7106kJ / Nm 3 . It is planned to carry out equipment transformation through overhaul and add CDQ device, which requires thermal simulation test.

[0045] (2) Application method

[0046] Design...

Embodiment 2

[0050] Embodiment 2: the application of the semi-coke production plant with an annual output of 600,000 tons

[0051] (1) Basic information:

[0052] The semi-coke production plant with an annual processing capacity of 600,000 tons adopts a vertical square furnace as the basic production equipment. The effective height of the carbonization section of the retort furnace is 4.6 meters. , The coal-to-char ratio is 1.65:1, and the tar yield is about 8%. Combustion and circulating gas volume 719Nm 3 / t 兰炭 , the amount of oxygen-enriched air into the furnace is 100Nm 3 / t 兰炭 , gas volume for drying 100NNm 3 / t 兰炭 , the remaining gas volume per ton of coal is 260NNm 3 / t 兰炭 Around, gas calorific value 13102kJ / Nm 3 . It is planned to carry out equipment transformation through overhaul and add CDQ device, which requires thermal simulation test.

[0053] (2) Application method:

[0054] The application method is basically the same as Example 1. The test device is a test dev...

Embodiment 3

[0057] Embodiment 3: the application of the semi-coke production plant with an annual output of 1.2 million tons

[0058] (1) Basic information

[0059] The vertical square furnace is used as the basic production equipment, and the air with an oxygen-enriched ratio of 30% is used for combustion. It has been retrofitted with a CDQ device. The effective height of the carbonization section of the retort furnace is 4.6 meters, and the effective height of the coke quenching section is 4.5m. The particle size is 25-60mm, the coal-to-coke ratio is 1.67:1, the tar yield is about 7.6%, the semi-coke moisture is 1.5-2.0%, and there is no drying process. Combustion and circulating gas volume 861Nm 3 / t 兰炭 (Among them, the amount of gas supplied by the burner is 213Nm 3 / t 兰炭 , coke quenching gas volume 648Nm 3 / t 兰炭 . ), the amount of combustion air into the furnace is 136Nm 3 / t 兰炭 , surplus gas volume 532Nm 3 / t 兰炭 , gas calorific value 9231.0-9342.8kJ / Nm 3 . During the p...

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Abstract

The present invention discloses an internal heated medium and low temperature dry distillation and coke dry quenching thermal simulation device and method. The device includes that: a first control valve is arranged between a dry distillation cylinder and a coaling hopper, the dry distillation cylinder is equipped with a coal gas outlet, the coal gas outlet is communicated with a cooling apparatus, the cooling device is communicated with a collection apparatus and a detection apparatus, and the dry distillation cylinder is equipped with a plurality of burners. A second control valve is arranged between a coke quenching cylinder and the dry distillation cylinder, the coke quenching cylinder is equipped with a coke quenching medium delivery tube, and the coke quenching cylinder is equipped with a plurality of coke quenching gas inlets. A third control valve is arranged between a coke storage tank and the coke quenching cylinder, and the side wall of the coke storage tank is provided withan inert gas inlet. The experimental device provided by the invention can accurately simulate the technological process of internal heated dry distillation and coke dry quenching in industrial production, and can provide effective guidance for improvement of industrial production equipment and technology. The experimental method provided by the invention is applied to operation of the experimental device involved in the invention.

Description

technical field [0001] The invention belongs to the field of coal chemical industry, and in particular relates to a simulation experiment device and method for internal heat dry distillation and dry quenching. Background technique [0002] In my country's coal resources, low-metamorphic coal accounts for more than 40% of coal reserves, and its output accounts for 30% of the current total. Most of low-metamorphic coal has the characteristics of high volatile content and high chemical activity. It can be obtained by pyrolysis. Tar and gas can realize the comprehensive utilization of low metamorphic coal. [0003] At present, most of the pyrolysis of low metamorphic coal in industrial production adopts internal thermal dry distillation process, and its coke quenching methods are mainly divided into wet coke quenching and dry coke quenching. The technology of wet coke quenching is relatively mature, and its equipment and capital investment are also low. However, the moisture con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/04C10B57/14C10B49/02C10B39/02
CPCC10B39/02C10B49/02C10B53/04C10B57/14
Inventor 赵俊学马成邹冲胡冰刘军利施瑞盟唐雯聃何江勇康毅
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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