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Using method for drop-tube furnace for testing

A technology for dropper furnace and test, which is applied in chemical analysis by titration method, furnace, furnace type, etc. It can solve the problems of high maintenance cost, high operation and maintenance cost, and achieve the effect of low maintenance cost

Active Publication Date: 2019-06-25
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this application is that in order to maintain the sealing gasket to work in a suitable temperature range, the air flow must always be introduced into the gas flow channel, and the operation and maintenance costs are relatively high.
[0005] To sum up, how to overcome the shortcomings of the high operation and maintenance costs of the cooling device at the sealing gasket on the dropper furnace used in the existing test is a technical problem that needs to be solved urgently in the prior art

Method used

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  • Using method for drop-tube furnace for testing
  • Using method for drop-tube furnace for testing
  • Using method for drop-tube furnace for testing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] refer to Figure 1-8 , the test dropper furnace of the present embodiment, comprising:

[0049] Reaction tube 19 (reaction tube 19 is made of quartz material and is vertically arranged in the middle of housing 6), the outer surface of this reaction tube 19 is surrounded by a heating layer 8, and heating layer 8 is sleeved in the housing 6 (for heating layer 8 For heating the reaction tube 19, it can be a heating resistance wire), between the inner surface of the housing 6 and the outer surface of the heating layer 8, an insulating layer 7 is filled (the insulating layer 7 is used to insulate the reaction tube 19 to ensure the temperature in the reaction tube 19 reach the experimental requirements); the upper end of the reaction tube 19 extends to the outside of the insulation layer 7, and the upper end of the reaction tube 19 is connected with a first disc 24, which matches the second disc 23 on the upper side of the first disc 24, and the second disc 24 A sealing wash...

Embodiment 2

[0056] The test dropper furnace of the present embodiment is basically the same in structure as in Example 1, further: it also includes the first gas tank 1 and powder feeding machine 14 (the powder feeding machine 14 is used to add combustion powder in the reaction tube 19 material), the first gas tank 1 is communicated with the powder feeder 14 through a pipeline, and a flow meter 3 and a safety valve 4 are arranged on the pipeline connected between the first gas tank 1 and the powder feeder 14, which can pass through the flow meter 3 and the safety valve 4 To control the supply volume of the primary air, realize the effective control of the experimental combustion process.

Embodiment 3

[0058] The test dropper furnace of the present embodiment, its structure is basically the same as that of embodiment 2, and further: it also includes at least two second gas tanks 2, and all the second gas tanks 2 communicate with the gas mixing tank 5 through pipelines respectively, A flowmeter 3 and a safety valve 4 are arranged on the pipeline connecting each second gas tank 2 with the gas mixing tank 5, and the gas mixing tank 5 communicates with each secondary air inlet pipe 20 through the pipeline, and each second gas Different gases can be stored in the tank 2, and the supply of gas in each second gas tank 2 can be controlled through the cooperation of the flow meter 3 and the safety valve 4, thereby forming a secondary air tank with controllable gas content in the gas mixing tank 5. Wind, to achieve effective control of the experimental combustion process.

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Abstract

The invention discloses a using method for a drop-tube furnace for testing, and relates to the field of drop-tube furnaces for testing. The using method comprises the following steps that step A: thedrop-tube furnace for testing is prepared; step B: the outer surface of each secondary air intake pipe is in threaded connection with a heat pipe condensing section wound on the outer side of the corresponding secondary air intake pipe, and a first heat pipe evaporating section is wound on the outer side of a first sealing gasket; step C: a reaction pipe is heated through a heating layer, and thecombustion powder begins to burn in the reaction pipe; and step D: a separated-type heat pipe starts to work and transfers the heat absorbed from the first sealing gasket and a second sealing gasket to the outer surface of each secondary air intake pipe, so that the first sealing gasket and the second sealing gasket work within a certain temperature range. The invention aims to overcome the shortage of the higher operation and maintenance costs of a cooling device at a sealing gasket of an existing drop-tube furnace for testing, and the operation and maintenance costs are lower than a traditional tap water circulating cooling manner.

Description

technical field [0001] The invention relates to the field of a test dropper furnace, and more specifically, relates to a method for using a test dropper furnace. Background technique [0002] Coal is the main primary energy in my country, of which coal-fired power generation accounts for 80% of the total power generation. Although with the increasing use of new energy power generation, such as wind power and solar power, the proportion of coal-fired power generation has declined, but Coal still accounts for the majority of total power generation, so we still need to pay attention to coal-fired power generation and a series of pollutant emissions caused by coal-fired power generation. According to the "Emission Standards for Air Pollution from Thermal Power Plants" (GB13223-2011), NO x , SO 2 and smoke emission limits are 50mg / m 3 、35mg / m 3 , 10mg / m 3 , the ultra-low emission policy is fully implemented in China. Relevant reports show that my country's current NO produce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/02F27B17/02G01N31/12G01N31/16
Inventor 严大炜邹琳江顾明言汪嘉伦王东方朱良涛陈金超宋天粟
Owner ANHUI UNIVERSITY OF TECHNOLOGY