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Method for processing strong exothermal reaction using with constant-temperature heat exchanging device

An exothermic reaction and heat exchange device technology, applied in the direction of heat exchanger types, indirect heat exchangers, chemical instruments and methods, etc., can solve the problems of catalyst burnout, small heat capacity, and lack of heat exchange. The effect of improving efficiency

Active Publication Date: 2009-06-03
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional bottom-up countercurrent cycle, the temperature of the circulating medium at the inlet is low, and the temperature at the outlet rises, which is consistent with the change in the heat of reaction. Therefore, sufficient heat exchange is not obtained, the reaction efficiency is not high, and even high-temperature hot spots may appear. , causing the catalyst to burn out
Moreover, the traditional circulating medium has small heat capacity and poor flow performance, requiring a power unit

Method used

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  • Method for processing strong exothermal reaction using with constant-temperature heat exchanging device
  • Method for processing strong exothermal reaction using with constant-temperature heat exchanging device
  • Method for processing strong exothermal reaction using with constant-temperature heat exchanging device

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Effect test

Embodiment 1

[0042] Embodiment one: if figure 1 and figure 2 As shown, it is the single-tube fixed-bed reaction system utilized by the strong exothermic reaction and method of the present invention. The device adopted in this embodiment can perfectly solve the problem of excessive heat release in the strong exothermic reaction and ensure the smoothness of the reaction. Effectively carry out and improve the efficiency of the reaction.

[0043] Fresh synthesis gas (or called synthesis gas, feed gas, H 2 / CO ratio is 2.0) after compression, enters the feed gas pipeline of heater 1, and indirect heat exchange with the circulating water heated by the flue gas pipeline (inlet 18) in the heater to about 200°C, and then enters reactor 4 . The control temperature of the circulating water is preferably at 205-210°C (according to the reaction temperature of the strong exothermic reaction, the control temperature of the circulating water should be controlled at no more than 210°C), and the synthes...

Embodiment 2

[0056] Such as Figure 4 Shown is the flow chart of the strong exothermic reaction of the pilot scale and the multi-tube fixed-bed reactor that adopts the device, and figure 1 The difference is that the reactor of the present embodiment is changed from the single-tube reactor of the first embodiment to a multi-tube reactor, wherein the multi-tubes (multiple gas pipelines) are arranged and distributed on the feed gas distribution plate 20, It communicates with the raw material gas pipeline in the heater through the raw material gas inlet 14 provided at the bottom of the reactor 4 . Compared with the single-tube reactor, the total feed amount of the multi-tube reactor is large, and the total heat release per unit time is large, so the pipeline II is used to forcibly circulate the water through the high-pressure circulation pump, so that the water can be quickly exchanged with the reactor. indirect heat exchange. The water temperature change in the circulation process is only 3...

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Abstract

The present invention provides a method that processing a strong exothermic reaction by utilizing the thermostatic heat exchange device; the thermostatic heat exchange device comprises a reactor and a heater arranged at the bottom of the reactor, the method is that utilizing the circulating water which is arranged in the thermostatic heat exchange device and passes through the reactor and the transmitted reaction gas runs from below to the top in the same direction, making the strong exothermic reaction processed in the reactor is always kept in the constant temperature range; and the present invention provides a mew thermostatic heat exchange device, depending on the temperature difference of water or the motive power of the pump, making the water cycles outside the reactor, on one hand , effectively shifting out the heat giving out from the reaction; on the other hand, replenishing the heat for the places lacking of the reaction heat, making the reaction happen in the constant temperature range, thereby guaranteeing the effective process of the reaction and increasing the efficiency of reaction. The thermostatic heat exchange device has the advantages of good heat transferring effect and small temperature variation, and is capable of automatically maintaining the target temperature, in addition, is safe and reliable.

Description

technical field [0001] The invention provides a method for using a constant temperature heat exchange device for a strong exothermic reaction, especially a method for using a constant temperature heat exchange device suitable for a strong exothermic reaction to perform a gas-solid (or other multi-phase) strong reaction with a reaction temperature of less than 350°C. Exothermic reaction method, this method adopts a new type of constant temperature heat exchange circulation device, with the help of circulating water and the reaction gas in the reactor, it goes from bottom to top in the same direction, and effectively removes a large amount of heat released by the reaction. Energy replenishment is carried out locally, so that the reaction takes place in the "constant temperature range", ensuring the effective progress of the reaction and improving the efficiency of the reaction. Background technique [0002] Gas-solid (or other heterogeneous) reaction process, especially gas-so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/02F28D1/047
Inventor 魏伟胜石勇徐建鲍晓军
Owner BC P INC CHINA NAT PETROLEUM CORP
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