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Biomass waste-heat flue gas recycling device

A technology of flue gas circulation and biomass, which is applied in the field of heat exchange, can solve problems such as waste of heat energy, and achieve the effect of saving energy consumption

Active Publication Date: 2014-03-19
GUANGZHOU DEVOTION THERMAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, after the pyrolysis reaction, the reactor will inevitably discharge part of the high-temperature waste heat flue gas. If it is not recycled, it will be a waste of heat energy

Method used

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  • Biomass waste-heat flue gas recycling device

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Experimental program
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Embodiment Construction

[0008] Such as figure 1 As shown, the biomass waste heat flue gas utilization device is composed of ash removal tank 1, primary heat exchanger 2, secondary heat exchanger 4, and air preheater 3.

[0009] The ash removal tank 1 has a hollow structure and is arranged horizontally. There are two openings on its upper and lower parts. The upper openings are respectively connected to the parallel and vertically arranged primary heat exchanger 1 and secondary heat exchanger 4. The lower opening is connected to the ash discharge tank. equipment. Heat exchangers 2 and 4 are shell and tube heat exchangers. The upper part of the primary heat exchanger 2 has a circulating gas outlet, the upper part of the secondary heat exchanger 4 has a circulating gas inlet, and the lower parts of the primary heat exchanger and the secondary heat exchanger communicate with each other. The upper end of the secondary heat exchanger has an air outlet cavity 6 .

[0010] The upper end of the primary hea...

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Abstract

The invention discloses a biomass waste-heat flue gas recycling device. The biomass waste-heat flue gas recycling device comprises at least two stages of heat exchangers and at least one horizontal ash removing tank, wherein the heat exchangers are vertically communicated in parallel; the ash removing tank is connected with the two adjacent heat exchangers; the upper part of the ash removing tank is connected with the heat exchangers by an opening; waste-heat flue gas flows in heat exchange tubes of the heat exchangers and circulating gas flows in inner cavities of the heat exchangers. The biomass waste-heat flue gas recycling device disclosed by the invention has the advantages that circulating gas is heated by the waste-heat flue gas generated by a reactor, and then high-temperature circulating gas is inputted into the reactor to participate in pyrolytic reaction, so that the energy consumption is saved.

Description

technical field [0001] The invention belongs to the technical field of heat exchange, and in particular relates to a device for recovering biomass waste heat flue gas for recycling. Background technique [0002] Chinese patent document CN101531910A discloses a biomass rapid pyrolysis system, which includes a plate heat exchanger, and its purpose is to replace the prepared higher-temperature ecological oil with a lower-temperature ecological oil to supply a condensation tower as a cooling medium. The direct purpose of this traditional heat exchanger is only to serve the condensation process, but in fact, the function of the heat exchanger is far more than that, such as the waste heat utilization function can be tapped. In the biomass fast pyrolysis system mentioned above, after the pyrolysis reaction of biomass fuel inside the reactor, two kinds of gases will be produced, one is cracking gas (condensable gas) and circulating gas (non-condensable gas), in which the circulating...

Claims

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Application Information

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IPC IPC(8): B01J19/00
Inventor 常厚春马革刘巍杨红斌
Owner GUANGZHOU DEVOTION THERMAL TECH