Microwave calcium carbide furnace reactor and method for preparing calcium carbide by using same

A microwave reaction and reactor technology, applied in the field of coal chemical industry, can solve the problems of difficult exhaust gas treatment, high power consumption, and high raw material requirements, and achieve the effects of improving effective utilization, reducing CO2 emissions, and increasing economic benefits.

Active Publication Date: 2018-05-04
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electric arc process requires the use of block raw materials with a certain particle size, and the mass transfer and heat transfer between raw materials need to be strengthened at high temperatures. Therefore, the high temperature and long time of calcium carbide production lead to large power consumption, low output, high raw material requirements, and dust. Large and difficult exhaus

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  • Microwave calcium carbide furnace reactor and method for preparing calcium carbide by using same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as figure 1 Shown is a microwave calcium carbide furnace reactor, including a microwave reaction furnace body 1, and the microwave reaction furnace body 1 includes a microwave energy gathering cavity 10, a shell 12, and an insulating layer 11 between the shell and the energy gathering cavity. A reaction chamber 13 for forming materials in the microwave energy gathering chamber 10; the energy gathering chamber is provided with an exhaust gas system 3 for providing an atmosphere for the reaction chamber 13 and simultaneously adjusting the pressure of the reaction chamber 13, and the energy gathering chamber is also provided with Temperature measurement and monitoring system 4;

[0051] It also includes a microwave energy generating system 2 for conducting microwaves in the energy-gathering cavity, that is, the reaction chamber 13; the microwave energy generating system 2 and the microwave energy-gathering cavity 10 are also connected to a water circulation cooling sy...

Embodiment 2

[0053] Such as figure 1 As shown, in this embodiment, on the basis of Embodiment 1, the microwave energy-gathering cavity 10 is a fully-sealed graphite energy-gathering microwave resonator cavity, and the inner layer of the energy-gathering cavity is integrally formed with mirror graphite; the outer shell 12 is a fully-sealed stainless steel Outer chamber; the insulation layer 11 is made of alumina, zirconia, silicon oxide, monetite, graphite and other heat-resistant heat-insulating materials;

[0054] One side of the microwave reaction furnace body 1 is provided with the same furnace door 14 as a part of the furnace body structure; the furnace door 14 is welded on the furnace door trolley 15; the furnace door 14 is connected with the furnace body The flanges are used for compression connection between them, and when the furnace door is in the closed state, it forms an airtight whole with the same structure as the furnace body.

Embodiment 3

[0056] Such as figure 1 As shown, the present embodiment is based on Embodiment 1, and the microwave energy generating system 2 includes a microwave source, a circulator 20, and a waveguide 21 for microwave transmission; The window is sealed to prevent the high-temperature gas generated by the reaction from entering the waveguide 21 to cause ionization and cause adverse effects on the microwave energy generation system 2; one end of the window is connected to the microwave source, and the other end of the window is used as part of the inner wall of the energy-gathering cavity for conduction into the cavity microwave.

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Abstract

The invention discloses a microwave calcium carbide furnace reactor. The microwave calcium carbide furnace reactor comprises a microwave reaction furnace body, wherein the microwave reaction furnace body comprises a microwave energy gathering cavity, a shell and an insulating layer positioned between the shell and the energy gathering cavity; a reaction chamber for materials is formed in the microwave energy gathering cavity; a material insulating reaction system is arranged inside the reaction chamber; an air exhausting system and a temperature monitoring system are arranged on the energy gathering cavity; the microwave calcium carbide furnace reactor further comprises a microwave energy generating system for conducting microwave into the energy gathering cavity, namely the reaction chamber; a water circulating cooling system is further connected to the microwave energy generating system and the microwave energy gathering cavity. The invention further provides a method for preparing calcium carbide by using the calcium carbide furnace reactor. Through use of microwave heating, the heat and mass transfer process between the reaction materials can be intensified, so that the formation temperature of the calcium carbide is greatly reduced, and the calcium carbide is synthesized at a relatively low temperature of 1600-1900 DEG C; the reaction speed is high, the energy utilizationrate is high, operation is convenient, dust pollution is free, and the problems of high investment, high pollution and high energy consumption of an arc calcium carbide furnace are solved.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a microwave calcium carbide furnace reactor and a method for preparing calcium carbide using the same. Background technique [0002] China is a country poor in oil and rich in coal, and coal is an important basic energy and industrial raw material for our country. Reducing the proportion of coal's primary energy consumption and improving the level of coal chemical industry are effective means for the green development of black coal and the low-carbon development of high-carbon resources. Calcium carbide (calcium carbide) is the key intermediate and basic chemical raw material of coal chemical industry, mainly used to produce chemical products such as acetylene. More than 80% of PVC manufacturers in my country use calcium carbide acetylene as raw material. At present, coal-to-calcium carbide and coal-to-methanol are the two main approaches of my countr...

Claims

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Application Information

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IPC IPC(8): C01B32/942C01B32/40B01J19/12B01J19/14
CPCB01J19/126B01J19/14B01J2219/1242B01J2219/0871Y02P20/10
Inventor 姜标赵虹刘思源齐会杰黄伟光
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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