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A pulverized coal feeding system with self-circulation

A feeding system and self-circulation technology, applied in the field of coal chemical industry, can solve the problems of material pipeline wear, fast gas speed, high energy consumption, etc., and achieve the effect of precise injection, non-pulsation injection and uniform injection

Active Publication Date: 2021-07-13
航天神洁(北京)科技发展有限公司 +6
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For quite a long period of time, dilute phase transportation is the main method, that is, during the transportation process, the material is suspended in the gas, and the volume concentration fraction does not exceed 10%. Dilute phase transportation requires a large amount of gas, high energy consumption, and gas velocity Faster, resulting in severe material and pipeline wear

Method used

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  • A pulverized coal feeding system with self-circulation
  • A pulverized coal feeding system with self-circulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] The pulverized coal is transported to the site by a pulverized coal transport vehicle, the pulverized coal feed valve 2 installed above the injection tank 1 is opened, and the pulverized coal is transported into the injection tank 1, and the pulverized coal in the tanker gradually falls into the injection tank Inside 1, the weighing and height measuring sensor (that is, the weighing and height measuring module 4) starts to record the weight and height of the pulverized coal falling into the tank, and when the predetermined weight is reached or the pulverized coal falling into the tank reaches a certain height , the tank truck stops feeding into the injection tank 1, the pulverized coal feed valve 2 at the inlet of the injection tank 1 is closed, and the weight of the pulverized coal falling into the tank is recorded.

[0054] After the tank truck conveys, the pulverized coal feed valve 2 is closed. Open the nitrogen input valve 3 and inject nitrogen into the injection t...

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Abstract

A pulverized coal feeding system with self-circulation to supply pulverized coal to the reactor. Including blow tank, nitrogen input valve, dust collector, rotary feeder, feedback device, pressure transmitter, gas input valve, online analyzer, controller. The tank truck has its own gas distribution system to pour the pulverized coal into the injection tank. The injection tank is fluidized and pressurized with nitrogen, and hydrogen is used as the carrier gas. reactor. The self-circulating pulverized coal feeding system of the present invention can operate in self-circulation, and the pulverized coal is transported in a dense phase, which is stable, continuous and high-precision, and can adapt to changes in different flow rates and pressure fluctuations in downstream reactors.

Description

technical field [0001] The invention relates to a pulverized coal feeding system with self-circulation, which belongs to the field of coal chemical industry. Background technique [0002] The clean and efficient utilization of coal is the key to China's realization of a low-carbon economy. The new coal chemical industry combines the advantages of high energy utilization rate, sufficient resource utilization, and low emissions of greenhouse gases such as carbon dioxide. It is a key direction for future development. In reality, there are still many problems to be solved in pulverized coal transportation: For example, during the pulverized coal feeding process, it is difficult to guarantee the stability and controllability of pulverized coal supply, which in turn affects the continuity and uniformity of pulverized coal transportation. The specific performance is as follows: The flow of pulverized coal in the injection tank is unstable; sometimes the pulverized coal cannot be un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65G65/32B65G69/18B65G69/00
CPCB65G65/32B65G69/00B65G69/181B65G2201/045
Inventor 陈峰何伟朱万光
Owner 航天神洁(北京)科技发展有限公司