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System and method for preparing coal tar, gas and semi-coke by activating coal gas and flash pyrolysing coal with solid heat carrier

A solid heat carrier, coal tar technology, applied in the field of coal chemical industry, can solve the problems of not ensuring long-term stable operation of the device, blocking one-time investment, high investment and energy consumption

Active Publication Date: 2017-05-31
陕西凯德利能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN 101935539A Catalytic pyrolysis and pyrolysis of pulverized coal to prepare coal tar and its device and patent CN1664069A A method for increasing the yield of coal pyrolysis tar with methane as the reaction gas, which is pyrolysis in the activated atmosphere of methane loaded with metal catalysts, which can The yield of coal tar is greatly increased, but the long-term stable operation of the device cannot be guaranteed because the catalyst is prone to carbonization and deactivation
[0006] The above patents do not have a good grasp of the mechanism of rapid pyrolysis, rapid export, rapid cooling, and free radical saturation in the process of coal pyrolysis, and the optimization of high-temperature oil and gas that is easy to condense and coke, blockage, energy consumption, and one-time investment, resulting in either oil production Low rate, or high investment and energy consumption

Method used

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  • System and method for preparing coal tar, gas and semi-coke by activating coal gas and flash pyrolysing coal with solid heat carrier
  • System and method for preparing coal tar, gas and semi-coke by activating coal gas and flash pyrolysing coal with solid heat carrier
  • System and method for preparing coal tar, gas and semi-coke by activating coal gas and flash pyrolysing coal with solid heat carrier

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Experimental program
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Effect test

Embodiment 1

[0075] Embodiment 1: as figure 1 As shown, a solid heat carrier activated gas flash pyrolysis coal production system for coal tar, gas and semi-coke, including raw coal primary processing device, pyrolysis reaction separator, semi-coke heating separator, recycling device, Coal tar recovery device and semi-coke cooling device; part of the semi-coke powder from the pyrolysis reaction separator enters the semi-coke heating separator 10, and the pyrolysis reaction separator is used to pyrolyze dry coal to produce raw coal gas and medium-temperature semi-coke; semi-coke The heating separator is used to further heat and separate the medium-temperature semi-coke to produce high-temperature semi-coke and high-temperature flue gas; the high-temperature flue gas from the semi-coke heating separator 10 enters the recycling device, and the coal tar recovery device uses raw coal gas to produce coal tar and high-temperature flue gas. Coal gas; semi-coke cooling device uses medium-temperatur...

Embodiment 2

[0080] Embodiment 2: For energy saving and emission reduction, energy recycling. The recycling device of the present invention comprises a supplementary combustion chamber 11, a high-temperature gas heat exchanger 12 and a desulfurization and denitrification reactor 13, the outlet of the cyclone separator group is connected with the inlet of the supplementary combustion chamber 11, and the outlet of the supplementary combustion chamber 11 is exchanged with the high-temperature gas. The heat exchanger 12 is connected, and the outlet of the flue gas circulation fan 1, the gas outlet of the coal tar generating device, and the inlet of the pressurized air are also connected to the inlet of the high-temperature gas heat exchanger 12, and the inlet of the flue gas circulation fan 1 is connected to the cloth bag Another outlet of the dust collector 2; the outlet of the high-temperature gas heat exchanger 12 is connected with the inlet of the desulfurization and denitrification reactor...

Embodiment 3

[0081] Embodiment 3: In order to optimize the pyrolysis process, such as figure 2 As shown, the gas-solid separator in the pyrolysis reaction separator of the present invention includes a settling chamber housing 8-14, a pyrolysis fast splitter 8-4, a primary stripping device and a secondary stripping device, and the settling chamber housing 8 One end of -14 is located in the second flaring section, the other end of the shell 8-14 in the settling chamber is located in the third straight line section, the primary stripping device is located in the shell 8-14 of the inner settling chamber, and the secondary stripping device is located in the settling chamber shell 8-14. At the second straight section of chamber 8-13; the first-stage stripping device includes a first-stage conical drainage cone 8-5, a first-stage cone bucket 8-6, and a first-stage stripping gas ring pipe 8 placed in sequence from top to bottom -21, the large-diameter section of the first-stage cone bucket 8-6 is...

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Abstract

The invention relates to a system and method for preparing coal tar, gas and semi-coke by activating coal gas and flash pyrolysing coal with a solid heat carrier. The system comprises a raw coal primary processing apparatus, a pyrolytic reaction separator, a semi-coke heating separator, a recycling apparatus, a coak tar recovering apparatus and a semi-coke cooling apparatus; a part of semi-coke powder discharged from the pyrolytic reaction separator enters the semi-coke heating separator, high-temperature smoke discharged from the semi-coke heating separator enters the recycling apparatus, the coal tar recovering apparatus produces coal tar and coal gas, and the semi-coke cooling apparatus produces semi-coke. In the existing coal tar preparation method, the coal pyrolytic optimization of the coal is not good, so that the existing coat tar preparation method has the technical problems of low oil yield, high investment and high energy consumption. The system for preparing the coal tar, gas and semi-coke by activating the coal gas and flash pyrolysing the coal with the solid heat carrier is rapid in pyrolysis, rapid in output and rapid in cooling.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a system and a method for producing coal tar, coal gas and semi-coke by solid heat carrier activating coal gas flash pyrolysis coal. Background technique [0002] Cascade separation utilization of high volatile bituminous coal and lignite is an important way of clean coal chemical industry. Coal pyrolysis is the key technology for coal cascade separation utilization. Coal pyrolysis equipment has low investment, low energy consumption, high thermal efficiency and low water consumption , low carbon emissions, has broad market prospects and good economic benefits. [0003] From the pyrolysis mechanism and practice, it is proved that fast pyrolysis, fast export and fast cooling are effective ways to increase the yield of pyrolysis tar. The smaller the particle size of the coal, the faster the pyrolysis speed under the same conditions, and the pyrolysis of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04C10B49/16C10B49/04C10B57/00C10B57/10C10B57/18C10K1/02C10K1/18
CPCC10B49/04C10B49/16C10B53/04C10B57/00C10B57/005C10B57/10C10B57/18C10K1/024C10K1/18
Inventor 王树宽杨占彪
Owner 陕西凯德利能源科技有限公司
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