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Entrained flow reactor temperature control system and control method thereof

A temperature control system and reactor technology, applied in the field of coal gasification

Active Publication Date: 2009-09-23
THE NORTHWEST RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Another object of the present invention is to provide the method that uses described entrained bed temperature control system to control entrained bed reactor temperature, to solve the problem existing in the aspect of entrained bed reactor temperature control of existing industrialization device

Method used

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  • Entrained flow reactor temperature control system and control method thereof
  • Entrained flow reactor temperature control system and control method thereof

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Embodiment 1

[0093] The operating conditions of the coal-water slurry entrained bed reactor with a single reactor daily processing capacity of 1065 tons of coal using Henan Yima coal as raw material are as follows: the gasification agent uses oxygen with a purity of 99.6% by volume, and the flow rate of oxygen into the furnace is 25104.75Nm 3 / h, the concentration of the coal slurry is 65% by weight based on the total weight of the coal slurry, the flow rate of the slurry into the furnace is 68613kg / h, the operating pressure of the entrained bed reactor is 6.5MPa, the furnace operating temperature is 1350°C, the oxygen / coal The volume ratio of the slurry was 447. The temperature control system of the entrained bed reactor adopts figure 1 control system shown. exist figure 1 In the process, the slurry is pressurized to 7.8MPa by a high-pressure slurry pump and then sent to the burner, and then sprayed into the reactor together with 8.2MPa oxygen through the burner. After the slurry ent...

Embodiment 2

[0106] In a production plant with an annual output of 300,000 tons of synthetic ammonia in China, the gasification unit uses mixed coal from Sunjiahao and Baoping Bay (Sunjiahao coal: Baoping Bay coal = 3:7 by weight) as raw material. The daily processing capacity of the reactor is 845.16 tons of coal. The gasification agent uses oxygen with a purity of 99.6% by volume. 6.5MPa, the operating temperature of the furnace is 1340°C, and the standard volume ratio of oxygen / slurry is 472.

[0107] In this embodiment, the temperature control method of the entrained bed reactor adopts the control method of the present invention, and the temperature control system of the entrained bed reactor adopts figure 2 control system shown. In the control system, two electromagnetic flowmeters are used to measure the instantaneous flow of the slurry, and the speed of the high-pressure slurry pump is converted into the instantaneous flow of the slurry. The three slurry flow signals are input to...

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Abstract

The invention discloses a control system and a method for controlling the temperature of an entrained flow reactor and is used for controlling the temperature of an entrained flow reactor taking oxygen and hydrocarbon material slurry as raw material. The temperature control system comprises three parts of an oxygen / slurry ratio control sub-system, an entrained flow temperature measurement display sub-system and an auxiliary device. The temperature control method includes four steps of determining the optimal reaction temperature of the reactor, setting the ratio of oxygen / slurry, measuring and adjusting the flow rate of slurry, and measuring and adjusting the flow rate of oxygen. The control system and the method can effectively control the temperature of the reactor and reduce the temperature fluctuation value of the reactor to the minimum, thus achieving the purposes of realizing the safe operation of a multiplex slurry gasification system and prolonging the service life of components.

Description

【Technical field】 [0001] The invention relates to the technical field of coal gasification. More specifically, the present invention relates to a temperature control system for an entrained bed reactor, and also relates to a method for controlling the temperature of the entrained bed reactor using the temperature control system. 【Background technique】 [0002] Multi-component slurry gasification technology is to convert hydrocarbon materials (including coal / petroleum coke / pitch / oil / coal liquefaction residue) into H 2 The technology of clean synthesis gas composed of CO and CO is the basis for the development of process industries such as chemicals, liquid fuels, and combined cycle power generation with hydrocarbon materials as raw materials. After crushing, the hydrocarbon materials are sent to the mill together with water, additives, PH regulators and fluxing agents for co-grinding and pulping, and a multi-component slurry with a concentration of about 55-68% is made. Oxy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/00
CPCY02E20/18
Inventor 门长贵贺根良郑化安李璞徐红东杨云龙王锦韦孙昌徐宏伟朱春鹏郑亚兰
Owner THE NORTHWEST RES INST OF CHEM IND
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