Unlock instant, AI-driven research and patent intelligence for your innovation.

Combustion device for low concentration gaseous hydrocarbon

A combustion device and gaseous hydrocarbon technology, applied in the field of combustion equipment, can solve problems such as complex structure and increased equipment complexity, and achieve the effects of less material, simplified equipment, and small heat loss

Inactive Publication Date: 2009-05-06
UNIV OF SCI & TECH OF CHINA
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this makes combustion easier to occur, it increases the complexity of the equipment due to the introduction of the catalyst layer
The heat exchange medium layer used by TFRR to store and transfer heat efficiently leads to the limitation of reactor temperature, which requires regular airflow reversal, resulting in complex structure and the need for a good insulation layer, which still exists in CFRR.

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
  • Combustion device for low concentration gaseous hydrocarbon
  • Combustion device for low concentration gaseous hydrocarbon
  • Combustion device for low concentration gaseous hydrocarbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] figure 1 A schematic diagram of the implementation structure of the gas flow channel of the combustion device with low concentration of gaseous hydrocarbons in this embodiment is a ring: the air intake channel 12 and the exhaust channel are surrounded by a thin plate-shaped outer wall surface 8 and an inner wall surface 9. 14, forming a two-way counter-flow airflow passage, communicating with the combustion chamber 16 located in the center of the annular passage circle. Generally, the number of turns of the airflow channel can be 3 to 25 turns. When the number of turns is less than 3, the amount of heat transfer is weak, and when the number of turns is greater than 25, the cost is too high, and the gain outweighs the gain.

[0019] In the present embodiment, a dividing plate 11 is extended from the outer wall in the combustion chamber to divide the combustion chamber 16 into two connected parts. The length of the dividing plate is 70% of the diameter of the combustion c...

Embodiment 2

[0032] In this embodiment, the air flow channel is spiral and the number of partitions is two.

[0033] figure 2 It is a structural schematic diagram of this embodiment: this embodiment adopts a spiral air flow channel, and two partitions 11 are used in the combustion chamber 16 to divide the combustion chamber into 3 regions, and the length of each partition is 70% of the diameter of the combustion chamber . Others are the same as in Example 1.

[0034] The spiral airflow channel has good heat exchange effect and small airflow pressure loss, but it is difficult to process; when working, the airflow flows through an S-shaped path in the combustion chamber 16 divided into three areas by two partitions, and then enters the exhaust channel 14 is discharged through the outlet 4. This structure can prolong the heat transfer and combustion reaction time in the combustion chamber 16, so that the combustion stability is better and the combustion is more complete.

Embodiment 3

[0036] In this embodiment, the air flow channel is in the shape of a square ring.

[0037] image 3 It is a schematic diagram of the structure of this embodiment: the thin plate-shaped outer wall surface 8 and the inner wall surface 9 enclose a square ring-shaped intake channel 12 and an exhaust channel 14 . Others are with embodiment 1. Compared with the circular air flow channel and the helical air flow channel, the air flow pressure loss of the square annular air flow channel is relatively large, but the device is easy to process and the cost can be reduced.

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 burner with low-density gas hydrocarbon, characterized in that an annular air inlet channel and a discharge channel with multiple rings are formed by thin annular outer wall and inner wall to form bidirectional reverse airflow channel to communicate with a burning room at the center of the annular channel, the burning room contains a porous material, the heat transmission is realized between the inlet and outlet airflow channels in the annular airflow channel, to avoid transmitting heat between the gas and heat medium in present reactor and avoid side heat hurt on wall. And when the airflow channels are enough, the inventive device can reach higher working temperature to reduce the density limit of burning more, without steering airflow and using catalyst timely. The invention has low thermal insulation demand to simplify the device and reduce cost. The invention can use the low-density gas hydrocarbon as natural gas or the like.

Description

Technical field: [0001] The invention belongs to the technical field of combustion equipment, in particular to a combustion device for coal mine ventilation with low-concentration gas. Background technique: [0002] China's "Industrial Safety and Environmental Protection" (2002, 28 (3) pages 3-5) introduced the working principle of the thermal flow reactor (Thermal Flow-Reversal Reactor, TFRR). The reactor is divided into three layers, the middle layer is a heat exchanger, and the outer two layers are heat exchange medium layers made of quartz sand or ceramic particles that can store and transfer heat efficiently. At the beginning of operation, one layer of the heat exchange medium is preheated by the electric heating element to make it reach the temperature above 1000°C required for gas combustion, and then the gas is fed into the coal mine ventilation, and the heat is transferred from the heat exchange medium to the gas , the gas is heated to the temperature required for ...

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 Patents(China)
IPC IPC(8): F23G7/06
Inventor 扈鹏飞林其钊蒋玉清
Owner UNIV OF SCI & TECH OF CHINA