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Fluid distributor, reaction device and application thereof

A fluid distributor and reactor technology, which can be used in feeding devices, bulk chemical production, chemical instruments and methods, etc., can solve problems such as nitriding embrittlement of fluid distributor materials

Active Publication Date: 2019-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The inventors of the present invention think through research that, even in the case of the existing reactor size, there is still too high acryl-ammonia mixture temperature, which makes the local temperature of the fluid distributor higher than the nitriding temperature for a long time, resulting in fluid distribution Nitriding embrittlement of device materials

Method used

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  • Fluid distributor, reaction device and application thereof
  • Fluid distributor, reaction device and application thereof
  • Fluid distributor, reaction device and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0172] The diameter of the propylene ammoxidation fluidized bed reactor (inner cavity diameter, the same below) is 10 meters, and the SANC series acrylonitrile catalyst of Sinopec Shanghai Petrochemical Research Institute is used to produce acrylonitrile. C 3 h 6 : NH 3 : The ratio of air is 1:1.2:9.3, the reaction temperature is 440°C, the reaction pressure is 50KPa, and the fluid inlet temperature of the propylene ammonia mixture is controlled at 80°C. The fluid distributor uses Figure 4 The material is carbon steel. The distributor has a main pipe with a diameter of φ500mm. There are 52 branch pipes connected to the main pipe. The diameter of the branch pipes is 80mm. The nozzle opening distance in the direction is 190mm, the longest branch pipe length is 4.9m, there are 52 nozzles, the shortest branch pipe length is 1.8m, there are 15 nozzles, the total number of distributor nozzles is 2100, the inner diameter of the nozzle is 20mm, and the length is 200mm ; Sharp hol...

Embodiment 2

[0174] The diameter of the propylene ammoxidation fluidized bed reactor is 12 meters. The SANC series acrylonitrile catalyst of Sinopec Shanghai Petrochemical Research Institute is used to produce acrylonitrile. 3 h 6 : NH 3 : The ratio of air is 1:1.2:9.5, the reaction temperature is 440°C, the reaction pressure is 50KPa, and the fluid inlet temperature of the propylene ammonia mixture is controlled at 80°C. The fluid distributor uses Figure 5 The form, the material is carbon steel, the distributor is equipped with 2 main pipes, the diameter of the main pipe is φ420mm, and there are 60 branch pipes, each connected to the main pipe, the diameter of the branch pipes is φ100mm, the distance between the branch pipes is 410mm, the branch pipes are parallel to each other, along the The nozzle opening distance in the branch pipe direction is 205mm, the longest branch pipe length is 5.9 meters with 58 nozzles, the shortest branch pipe length is 1.9 meters with 15 nozzles, the tota...

Embodiment 3

[0176] The diameter of the propylene ammoxidation fluidized bed reactor is 15 meters. The SANC series acrylonitrile catalyst of Sinopec Shanghai Petrochemical Research Institute is used to produce acrylonitrile. 3 h 6 : NH 3 : The ratio of air is 1:1.2:9.5, the reaction temperature is 435°C, the reaction pressure is 55KPa, and the fluid inlet temperature of the propylene ammonia mixture is controlled at 80°C. The fluid distributor uses Figure 6 The form, the material is carbon steel, the distributor is equipped with a main pipe, the diameter of the main pipe is φ650mm, and there are 44 branch pipes, which are connected to the main pipe respectively. The nozzle opening distance in the branch pipe direction is 230mm, the longest branch pipe length is 7.45 meters with 96 nozzles, the shortest branch pipe length is 2.4 meters with 45 nozzles, the total number of distributor nozzles is 3008, the nozzle inner diameter is 20mm, and the length is 150mm; sharp hole diameter is 6.5m...

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Abstract

The invention relates to a fluid distributor, a reaction device and an application thereof. The fluid distributor comprises one or more fluid delivery main pipes, wherein one fluid delivery main pipeis configured to form a closed shape when a center line and / or a center line extension line of the fluid delivery main pipe are connected end to end, or more fluid delivery main pipes are configured to form closed shapes when respective center line and / or center line extension line of the fluid delivery main pipes are connected end to end; multiple fluid delivery branch pipes are disposed on eachof the fluid delivery main pipes; a connection part is disposed on each of the fluid delivery main pipes; the connection part is configured to connect the fluid delivery branch pipes to a shell afterthe fluid delivery branch pipes pass through the shell to enter an inner cavity. The fluid distributor can at least exhibit the reduced risk of nitriding embrittlement.

Description

technical field [0001] The invention relates to a fluid distributor, in particular to a fluid distributor suitable for transporting propylene-ammonia mixed gas. The present invention also relates to a reaction device comprising the fluid distributor and the application of the fluid distributor in fluid transportation or acrylonitrile production. Background technique [0002] Acrylonitrile is an important chemical raw material in petrochemical industry. At present, the demand for acrylonitrile in the international market is increasing day by day. This situation prompts acrylonitrile manufacturers to hope to further expand their production capacity. The method of increasing the size of the reactor can expand the production capacity without increasing the number of reactor equipment, relatively speaking, that is, to reduce the cost of equipment manufacturing, so it is also regarded as the main means of expanding production capacity. [0003] It is known that during the product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/24B01J8/44C07C253/26C07C255/08
CPCB01J4/00B01J8/24B01J8/44C07C253/26B01J4/001B01J4/004C07C255/08B01J8/1827
Inventor 赵乐吴粮华
Owner CHINA PETROLEUM & CHEM CORP