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Multiple stage fluidized-bed reactor and method for synthesizing chloroethylene

A fluidized bed reactor and fluidized bed technology, applied in chemical instruments and methods, organic chemistry, hydrogen halide addition and preparation, etc., can solve the problems of poor temperature control, low production intensity, and inability to meet the deep conversion of acetylene alone. , to achieve the effect of reducing operating instrument and control costs, large production throughput, and large operating flexibility

Inactive Publication Date: 2011-09-14
YIBIN TIANYUAN GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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Embodiment 1

[0048] The inlet (2) for gas entering the fluidized bed, the gas distributor (3), the heat exchange tube (10), the horizontal perforated gas distribution plate (4), the heat exchange tube (10a), the outer catalyst overflow tube (6 ), the inlet (7) where the catalyst enters the fluidized bed, the outlet (8) where the deactivated catalyst is discharged from the fluidized bed, the cyclone separator (9) and the outlet (11) where the gas goes out of the fluidized bed and the fluidized bed ( 1) are connected to each other to form a complete two-stage fluidized bed (1). like figure 1 as shown, figure 1 The schematic diagram of the two-stage fluidized bed reactor (containing an outer catalyst overflow pipe) for the synthesis of vinyl chloride provided by the present invention, wherein, the distance between the gas distributor (3) and the horizontal perforated gas distribution plate (4) is 10 times the diameter of the fluidized bed. The distance below the outer catalyst overflow pip...

Embodiment 2

[0053] The inlet (2) for gas entering the fluidized bed, the gas distributor (3), the heat exchange tube (10), the horizontal perforated gas distribution plate (4), the heat exchange tube (10a), the outer catalyst overflow tube (6 ), horizontal perforated gas distribution plate (4a), inner catalyst overflow pipe (6a), heat exchange pipe (10b), catalyst inlet (7) into the fluidized bed, outlet of deactivated catalyst discharged from the fluidized bed ( 8), the cyclone separator (9) and the gas outlet (11) of the fluidized bed are successively connected with the cylinder wall of the fluidized bed (1) to form a complete three-stage fluidized bed (1), as figure 2 as shown, figure 2 The schematic diagram of the three-stage fluidized-bed reactor (containing an outer catalyst overflow pipe and an inner catalyst overflow pipe) for the synthesis of vinyl chloride provided by the present invention, wherein, the gas distributor (3) and the transverse gas distribution plate with holes ...

Embodiment 3

[0058] The inlet (2) for gas entering the fluidized bed, the gas distributor (3), the heat exchange tube (10), the horizontal perforated gas distribution plate (4), the heat exchange tube (10a), the outer catalyst overflow tube (6 ), horizontal perforated gas distribution plate (4a), external catalyst overflow pipe (6a), heat exchange tube (10b), horizontal perforated gas distribution plate (4b), external catalyst overflow pipe (6b), heat exchange tube (10c), the inlet (7) where the catalyst enters the fluidized bed, the outlet (8) where the deactivated catalyst is discharged from the fluidized bed, the cyclone separator (9) and the outlet (11) where the gas goes out of the fluidized bed are connected with the fluidized bed successively The cylinder walls of the bed (1) are connected to form a complete four-stage fluidized bed (1), such as image 3 as shown, image 3 The schematic diagram of the four-stage fluidized-bed reactor (containing three outer catalyst overflow pipes)...

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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 is an equipment and a process method for producing vinyl chloride by reacting hydrogen chloride and acetylene, and belongs to the technical field of chemical process and equipment. Background technique [0002] Vinyl chloride is a monomer for preparing polyvinyl chloride, and it 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, that is, to prepare vinyl chloride by reacting acetylene, ethylene or ethane with hydrogen chloride respectively. The source of ethylene is mainly the oil refining industry. Due to the rapid rise in crud...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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