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Multiple stage fluidized-bed reactor and method for synthesizing chloroethylene

A fluidized bed reactor and fluidized bed technology, applied in the fields of chemical instruments and methods, organic chemistry, hydrogen halide addition preparation, etc., can solve the problems of low production intensity, inability to meet the deep conversion of acetylene alone, poor temperature control, etc. , to achieve the effects of large production flux, reduced operating instrumentation and control costs, and less catalyst consumption

Inactive Publication Date: 2007-05-09
YIBIN TIANYUAN GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for the production of vinyl chloride by the existing fixed bed technology, which is too low in production intensity and poor in temperature control, and the existing fluidized bed technology cannot satisfy the deep conversion of acetylene alone. A device and method for producing vinyl chloride by reacting hydrogen chloride and acetylene in a fluidized bed reactor, achieving the purpose of efficiently converting acetylene in a fluidized bed reactor

Method used

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  • Multiple stage fluidized-bed reactor and method for synthesizing chloroethylene
  • Multiple stage fluidized-bed reactor and method for synthesizing chloroethylene
  • Multiple stage fluidized-bed reactor and method for synthesizing chloroethylene

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Effect test

Embodiment 1

[0048] The gas inlet (2), gas distributor (3), heat exchange pipe (10), transverse perforated gas distribution plate (4), heat exchange pipe (10a), overflow pipe (6), catalyst inlet (7) ), the catalyst outlet (8), the cyclone separator (9) and the gas outlet (11) are sequentially connected to the cylinder wall of the fluidized bed (1) to form a complete two-stage fluidized bed (1). As shown in Figure 1, Figure 1 is a schematic diagram of a two-stage fluidized bed reactor for vinyl chloride synthesis provided by the present invention (containing an outer overflow pipe), wherein the gas distributor (3) and the transverse perforated gas distribution plate ( 4) The distance between them is 10 times the diameter of the fluidized bed. The distance below the outer overflow pipe (6) from the gas distributor (3) is 0.05 times the diameter of the fluidized bed. The distance above the outer overflow pipe (6) from the transverse gas distributor (4) is 1 times the diameter of the fluidize...

Embodiment 2

[0053] The gas inlet (2), the gas distributor (3), the heat exchange tube (10), the transverse perforated gas distribution plate (4), the heat exchange pipe (10a), the outer overflow pipe (6), the transverse perforated gas The distribution plate (4a), the inner overflow pipe (6a), the heat exchange pipe (10b), the catalyst inlet (7), the catalyst outlet (8), the cyclone separator (9) and the gas outlet (11) are connected to the fluidized bed in sequence. The cylinder walls of (1) are connected to each other to form a complete three-stage fluidized bed (1), as shown in Figure 2, and Figure 2 is the schematic diagram of the three-stage fluidized bed reactor that Figure 2 is vinyl chloride synthesis provided by the present invention ( Including an outer overflow pipe and an inner overflow pipe), wherein the distance between the gas distributor (3) and the transverse perforated gas distribution plate (4) is 1 times the diameter of the fluidized bed. The distance between the transv...

Embodiment 3

[0058]The gas inlet (2), the gas distributor (3), the heat exchange tube (10), the transverse perforated gas distribution plate (4), the heat exchange pipe (10a), the outer overflow pipe (6), the transverse perforated gas Distribution plate (4a), outer overflow pipe (6a), heat exchange pipe (10b), transverse perforated gas distribution plate (4b), outer overflow pipe (6b), heat exchange pipe (10c), catalyst inlet (7), The catalyst outlet (8), the cyclone separator (9) and the gas outlet (11) are sequentially connected to the cylinder wall of the fluidized bed (1) to form a complete four-stage fluidized bed (1), as shown in Figure 3, 3 is a schematic diagram of a four-stage fluidized-bed reactor for vinyl chloride synthesis provided by the present invention (containing three outer overflow pipes), wherein the distance between the gas distributor (3) and the transverse perforated gas distribution plate (4) is 1.5 times the diameter of the fluidized bed. The distance between the...

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Abstract

A multi-segment fluidized-bed reactor for synthesizing vinyl chloride features that the perforated gas distributing plates are axially arranged at different heights of fluidized bed to divide it into two or more catalyst stacking regions. Its synthesizing process includes such steps as loading catalyst in fluidized bed, filling inertial gas to fluidize said catalyst, filling the mixed gas of hydrogen chloride and acetylene, catalytic reaction to become vinylchloride, and discharging the deactivated catalyst.

Description

technical field [0001] The invention relates to a multi-stage fluidized bed reactor and a method for synthesizing vinyl chloride, which are equipment and a process method for preparing vinyl chloride by reacting hydrogen chloride and acetylene, and belong to the technical field of chemical process and equipment. Background technique [0002] Vinyl chloride is a monomer for preparing polyvinyl chloride and is a very important chemical intermediate. With the wide application of polyvinyl chloride materials in packaging materials and other fields, the output of vinyl chloride and polyvinyl chloride has increased rapidly, and the annual demand in China is about 8 to 10 million tons. [0003] At present, there are three methods for industrial production of vinyl chloride, namely, vinyl chloride is prepared by reacting acetylene, ethylene or ethane with hydrogen chloride respectively. The main source of ethylene is the oil refining industry. In recent years, the price of ethylene...

Claims

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Application Information

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IPC IPC(8): B01J8/24C07C17/08C07C21/06
Inventor 骞伟中罗云魏飞郑春宁罗国华孙永贵师海波张磊魏小波颜华吴敏卢巍
Owner YIBIN TIANYUAN GRP CO LTD
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