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Cooling type spray nozzle and reactor

A reactor and nozzle technology, applied in the field of gasification, can solve the problems of lowering the temperature of the hot fuel, increasing the cost, not meeting the specifications of the oxygen pipeline, etc., and achieving the effect of less temperature loss and less impact

Active Publication Date: 2020-06-16
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the gasification unit of the preheating gasification process adopts the existing entrained flow bed furnace with internal cooling nozzles, the hot fuel will be cooled along the nozzle, and the temperature of the hot fuel will drop, which will seriously affect the performance of the gasification process; if the existing The airflow bed furnace is equipped with external cooling nozzles, the pure oxygen channel and the hot fuel channel are only separated by the metal wall, and the oxygen is heated, which seriously affects the safety of the system operation, and does not meet the oxygen pipeline specification (the temperature of the outer wall of the pipeline does not exceed 70°C )
Even if the insulation coating is added to the pipe, the effect is not good while increasing the cost

Method used

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  • Cooling type spray nozzle and reactor
  • Cooling type spray nozzle and reactor
  • Cooling type spray nozzle and reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Such as figure 1 and figure 2 As shown, the nozzle includes a nozzle body, a hot fuel passage 11 , a gasification agent inlet passage 12 , a gasification agent outlet passage 13 , a cooling passage 14 , a cooling passage partition 16 and a refractory insulation layer 15 . Wherein, the nozzle main body is configured to be cylindrical, as shown in the hatched part in the figure; the hot fuel channel 11 is arranged at the center of the nozzle main body, and is used for sending hot fuel into the gasifier; the gasification agent inlet channel 12 and the gasifier The gasifying agent outlet passages 13 jointly constitute the gasifying agent passages, which communicate with each other and are arranged in the nozzle body, the gasifying agent inlet passages 12 are evenly distributed around the hot fuel passage 11, and their inlet ends communicate with the gasifying agent source; gasification The inlet end of the agent outlet passage 13 is connected with the outlet end of the ga...

Embodiment 2

[0088] The main difference between this embodiment and Embodiment 1 is that the gasification agent inlet channel is divided into a circumferential gasification agent inlet channel 17 and a central gasification agent inlet channel 18; The source is connected, a plurality of circumferential gasification agent inlet channels 17 and a cooling channel 14 form a gasification agent-cooling channel group, and the gasification agent-cooling channel group is evenly distributed around the hot fuel channel 11; the gasification agent outlet channel The number of 13 is greater than the number of circumferential gasification agent inlet channels 17; the inlet end of the cooling channel 14 outside the circumferential gasification agent inlet channel 17 is connected to the source of the cooling medium, and the outlet end is connected to the cooling medium outlet channel 19, The cooling medium enters from the inlet end of the cooling channel 14 and leaves the nozzle through the cooling medium ou...

Embodiment 3

[0097] The main difference between this embodiment and Embodiment 1 is that the central gasification agent channel 22 is added as an additional gasification agent channel, and the two ends of the central gasification agent channel 22 are connected to the two gasification agent inlet channels 12 respectively. And across the hot fuel passage 11 , the part of the central gasification agent passage 22 crossing the hot fuel passage 11 is arranged with a central gasification agent outlet 23 , which communicates with the hot fuel passage 11 . With the above structure, the mixing of the gasification agent and the thermal fuel is enhanced.

[0098] Such as Figure 5-Figure 7 As shown, the nozzle includes a hot fuel passage 11 , a gasification agent inlet passage 12 , a central gasification agent passage 22 , a gasification agent outlet passage 13 , a cooling passage 14 and a refractory insulation layer 15 . Among them, the hot fuel passage 11 is used to send hot fuel into the gasifier...

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Abstract

The invention relates to a spray nozzle and a reactor. The spray nozzle comprises a spray nozzle main body and further comprises: a fuel channel arranged in the spray nozzle main body; a gasifying agent channel arranged in the spray nozzle main body; and a cooling channel arranged in the spray nozzle main body and surrounding the gasifying agent channel, wherein the spray nozzle main body includes a refractory insulation material, and the cooling channel is configured to be spaced apart from the fuel channel, so that the refractory insulation material is disposed between the cooling channel and the fuel channel. According to the spray nozzle and the reactor provided by the invention, the temperature loss of hot fuel is minimum, and the temperature of a gasifying agent is ensured to be within a safe range.

Description

technical field [0001] The invention relates to the technical field of gasification, in particular to a nozzle and a reactor with the nozzle. Background technique [0002] Coal gasification technology is an important part of clean coal technology and one of the main ways to use coal efficiently and cleanly. It has become the core technology of many modern energy and chemical systems. The entrained bed coal gasification process has high reaction temperature, liquid slag discharge, high gasification intensity, large production capacity, and high carbon conversion rate. It is the main development direction of coal gasification technology. However, the existing entrained-bed gasification process has problems such as small particle size of coal pulverized into the furnace, high preparation cost, and large restrictions on coal types. The preheating gasification process realizes the cascade control of the coal gasification reaction process by combining coal preheating and gasifica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/48C10J3/50C10J3/74
CPCC10J3/48C10J3/485C10J3/50C10J3/506C10J3/74C10J2200/152C10J2300/093C10J2300/0943C10J2300/0956C10J2300/0959C10J2300/0976
Inventor 王小芳吕清刚高鸣李伟任强强那永洁
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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