Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Pulverized coal feeding control device and pulverized coal feeding control method

The technology of a control device and a feeding device, which is applied to the feeding tool of the gasification device, the gasification of granular/powder fuel, transportation and packaging, etc., can solve the problems of unstable transportation, high operation intensity and low transportation accuracy, etc. Achieve the effects of high timing control accuracy, reduced operation intensity, and high execution efficiency

Active Publication Date: 2017-08-18
SHAANXI YANCHANG PETROLEUM GRP
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of bridging, material hanging, low conveying accuracy, unstable conveying and high operating intensity in the process of pulverized coal alternating pressure feeding in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pulverized coal feeding control device and pulverized coal feeding control method
  • Pulverized coal feeding control device and pulverized coal feeding control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0039] see figure 1 , the pulverized coal feeding control device of the present invention includes a feeding device body and a control system;

[0040] The feeding device body includes a coal hopper 1, a pulverized coal lock hopper 2 and a pulverized coal hopper 3 connected in sequence;

[0041] Described control system comprises central controller 19 and the automatic control valve and the sensor that link to each other with central controller 19;

[0042] The self-control valve includes a lock hopper feed valve 4 installed between the coal hopper 1 and the pulverized coal lock hopper 2, a lock hopper discharge valve 5 installed between the pulverized coal lock hopper 2 and the pulverized coal hopper 3, The lock hopper pressure valve 6 installed between the gas source 18 and the pulverized coal lock hopper 2, the feed hopper pressure regulating valve 10 in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a pulverized coal feeding control device and a pulverized coal feeding control method. The device comprises a feeding device body and a control system, wherein the feeding device body comprises a coal hopper, a pulverized coal locking hopper, a pulverized coal feeding hopper, a central controller, relevant valves and a sensor; the central controller comprises a sequence control unit, an analog quantity and switch quantity input / output unit, a human-machine interaction unit and a field communication unit. The pulverized coal feeding control device is preset with a pulverized coal feeding control method. According to the pulverized coal feeding control method, a field feedback signal is judged, a corresponding time sequence action instruction is generated, the valves are controlled to be opened and closed according to a preset procedure, and therefore, the pulverized coal feeding process is automatically finished. By further arranging a dual-decompression valve, a valve site feedback device and a valve action timer, the security risk and the fault rate in a feeding process are substantially decreased; and by setting a locking hopper pumping control process and a locking hopper discharging circulating control process in the pulverized coal feeding control method, the problems that bridging and discharging of pulverized coal are not smooth under an alternating pressure are solved. The pulverized coal feeding control device is high in control precision, strong in anti-jamming capability and low in error rate, the operation difficulty is substantially reduced, errors of manual operation are avoided, and the automatic, continuous, stable and safe pressurizing feeding of the pulverized coal is realized.

Description

technical field [0001] The invention relates to the feeding of solid powder in the field of energy and chemical industry and its automatic control method, in particular to a pulverized coal feeding control device and method. Background technique [0002] The pressurized feeding and transportation of pulverized coal is the key to pulverized coal gasification and pyrolysis technology, and the core to maintain the stable long-term operation of the process system. At present, there are mainly two technical solutions for pressurized coal powder feeding: one is dry coal powder alternating pressure pneumatic conveying technology; the other is coal water slurry conveying technology. In the field of pulverized coal pressurized feeding technology in my country, the alternating pressure conveying technology has occupied a dominant position for a long time. [0003] The alternating pressure conveying technology mostly adopts the lock hopper system to realize the pressurized conveying p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/50B65G53/40
CPCC10J3/50B65G53/40C10J2200/15C10J2300/093Y02P90/02
Inventor 王宁波王明峰吴升潇王汝成郝婷孔少亮刘晓花米建新刘丹靳皎
Owner SHAANXI YANCHANG PETROLEUM GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products