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Method and equipment for cooling catalyst for gas-solid reaction

A catalyst, gas-solid phase technology, applied in the field of catalyst cooling for gas-solid phase reaction, to achieve the effects of reducing the use cost, low cost input, easy maintenance and replacement

Inactive Publication Date: 2012-09-05
QINGDAO JINGRUN PETROCHEM DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the patented technology disclosed above, the heat exchange tube is directly arranged in the hot catalyst, that is, the catalyst is always in the heat exchange state, and the catalysts participating in the subsequent catalytic reaction are all cooled catalysts. Due to changes in working conditions, it is hoped that the temperature of the catalyst entering the reactor can be flexibly adjusted according to the needs of optimizing the operation of the reaction system. The above existing cooling technologies are difficult to meet this requirement

Method used

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  • Method and equipment for cooling catalyst for gas-solid reaction
  • Method and equipment for cooling catalyst for gas-solid reaction
  • Method and equipment for cooling catalyst for gas-solid reaction

Examples

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Embodiment 1

[0044] Embodiment 1, a certain annual output of 100 × 10 4 t / a catalytic device, reaction materials: heavy oil at atmospheric pressure, preheated at 220°C; conventional catalytic cracking catalyst is used; the reactor is in the form of a riser, the outlet temperature of the riser is 500°C, and the reaction time is 2.5s; the regeneration temperature is 685°C . The regeneration inclined pipe between the reaction-regeneration device is set as figure 2 In the desuperheater with the structure shown, the cooling baffle and catalyst flow control baffle are barrel-type, the heat exchange tube is in the form of a sleeve, and low-temperature water is used as the heat exchange medium; 60Kg / h of catalyst at 685°C enters the desuperheater, and there are 40 % of the catalyst passed through the delivery zone with a fluidizing air flow rate of 60 liters per kilogram of catalyst per hour. After heat exchange, the catalyst with a temperature of 640°C enters the reactor through the regenerati...

Embodiment 2

[0045] Embodiment 2, cooling device structure such as Figure 4 , the cooling partition and the catalyst flow control partition are divided baffles, the heat exchange tube is in the form of a sleeve, and low-temperature water is used as the heat exchange medium; 60Kg / h of catalyst at 685°C enters the cooler, and 60% of the catalyst passes through In the transfer area, the flow rate of fluidizing air in the transfer area is 70 liters per kilogram of catalyst per hour. After heat exchange, the catalyst with a temperature of 655°C enters the reactor through the regeneration slide valve. All the other parts are the same as in Example 1.

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Abstract

The invention discloses a method and equipment for cooling a catalyst for gas-solid reaction. A hot catalyst entering in a catalytic conversion reactor firstly enters in a catalyst cooler; the inside of the cooler is divided into a catalyst conveying zone without heat exchange, a catalyst cooling zone with heat exchange and a cooling control zone, and each zone is respectively provided with a fluidizing agent; and the hot catalyst flowing by the catalyst cooler enters in the reactor for taking part in catalytic conversion reaction after being cooled or partially cooled. The invention also provides the corresponding equipment. The invention can sure that the temperature of the catalyst entering in a riser reactor can be flexibly adjusted, thereby realizing the optimization and the control on the oil ratio of catalytic conversion reactant; a partition board with low cost is combined with a gas distributor to realize cooling control, thereby realizing the flexible adjustment between non-cooling and cooling; and a heat exchanging tube is convenient to detect and repair, thereby reducing the use cost.

Description

technical field [0001] The invention relates to a technique in the field of petrochemical industry, in particular to a catalyst cooling method and equipment for gas-solid phase reaction. Background technique [0002] Reaction conditions are an important factor in gas-solid phase reactions. The selection and control of reaction conditions in the gas-solid phase reaction process is directly related to the reaction conversion rate and reaction selectivity. There are many technologies for optimizing the operation of the reaction system. Taking catalytic conversion reaction as an example, dry gas pre-lifting technology and mixing temperature control technology , the rapid separation technology in the exit area, and the rapid cooling termination technology all have a significant impact on the reaction results, and have been well applied in industry. Many gas-solid reaction processes require solid-phase substances such as catalysts to be cooled to improve reaction conditions, espe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/18
Inventor 石宝珍
Owner QINGDAO JINGRUN PETROCHEM DESIGN INST CO LTD