Device and method for detecting combustion characteristic of tail gas containing high-concentration CO

A technology for combustion characteristics and detection devices, which is applied in the field of combustion characteristics detection devices for tail gas containing high concentrations of CO, can solve the problems of yellow phosphorus tail gas combustion characteristics that have not been reported, the utilization rate is less than 40%, and the exhaust gas is ignited and vented. Simple, good stability and high safety performance

Active Publication Date: 2012-03-28
KUNMING UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

China's current production capacity of yellow phosphorus is 2.3 million t / a, and the output in recent years is about 700,000 t / a, and the tail gas production is about 2.1×10 9 m 3 / a, while the utilization rate of yellow phosphorus tail gas is less than 40%, and the excess tail gas is ignited and emptied, causing great pollution to the environment
[0005] Since the 1990s, many domestic yellow phosphorus enterprises or research units have made some attempts to use yellow phosphorus tail gas as boiler fuel, mainly using yellow phosphorus tail gas as fuel for medium and low pressure boilers, such as drying raw materials and producing hot water Steam, etc. In recent years, some yellow phosphorus enterprises have tried yellow phosphorus tail gas gas power generation, but there is no relevant report on the research on the combustion characteristics of yellow phosphorus tail gas

Method used

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  • Device and method for detecting combustion characteristic of tail gas containing high-concentration CO
  • Device and method for detecting combustion characteristic of tail gas containing high-concentration CO
  • Device and method for detecting combustion characteristic of tail gas containing high-concentration CO

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Combustion characteristics test of yellow phosphorus tail gas: insert the electronic ignition gun into the ignition hole, turn on the electronic ignition gun, and open the yellow phosphorus tail gas flow regulating valve at the same time, the initial temperature of the yellow phosphorus tail gas is 106°C, ignite the yellow phosphorus tail gas, and adjust it through the flow regulating valve The flow rate is 1.0m 3 / h, plug the ignition hole with thermal insulation material to prevent air from entering through the ignition hole; open the air flow regulating valve, and adjust the air flow so that the excess air coefficient is 1.00, 1.10, 1.20, 1.30; the ignited gas is in the combustion chamber For combustion, use thermocouples to extend into the thermocouple sockets on the four combustion chambers to collect temperature data respectively. The positions of the four thermocouple interfaces from the bottom of the combustion chamber are 100 mm, 300 mm, 650 mm, and 1100 mm resp...

Embodiment 2

[0037] Put the electronic ignition gun into the ignition air, turn on the electronic ignition gun, and open the yellow phosphorus tail gas flow regulating valve at the same time, the temperature of the yellow phosphorus tail gas is 110°C, ignite the yellow phosphorus tail gas, and adjust the flow rate to 1.0, 1.1, 1.2, 1.3 through the flow regulating valve , 1.4m 3 / h. Plug the ignition hole with thermal insulation material to prevent air from entering through the ignition hole. Open the air flow regulating valve and adjust the excess air coefficient to 1.3 when the corresponding gas flow is reached. The ignited gas is carried out in the combustion chamber, and thermocouples are inserted into the thermocouple sockets on the four combustion chambers to collect temperature data. The positions of the four thermocouple interfaces from the bottom of the combustion chamber are 100mm, 300 mm, 650 mm, and 1100 mm respectively, and the distance from the center line of the combustion ...

Embodiment 3

[0040] Put the electronic ignition gun into the ignition air, turn on the electronic ignition gun, and open the yellow phosphorus tail gas flow regulating valve at the same time. The temperature of the yellow phosphorus tail gas is 78°C, ignite the yellow phosphorus tail gas, and adjust the flow rate to 1.0m through the flow regulating valve. 3 / h. Plug the ignition hole with thermal insulation material to prevent air from entering through the ignition hole. Open the air flow regulating valve, and adjust the excess air coefficient of the air flow to 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4 respectively. The ignited gas is carried out in the combustion chamber, and the flue gas composition collector is used to penetrate into the flue gas composition collection hole at a height of 1100mm to detect the flue gas composition. For the flue gas composition data, see Figure 7 .

[0041] Figure 7 O in the smoke composition of yellow phosphorus tail gas combustion 2 , CO, CO 2 The chang...

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Abstract

The invention discloses a device and method for detecting the combustion characteristic of tail gas containing high-concentration CO. The device consists of a gas distribution induction system, a combustion system, a data acquisition processing system and a smoke discharge system. In the invention, a combustion chamber of the combustion system adopts a heat-insulation combustion mode, and a good heat insulation effect is realized; the system is uniform and stable; as the smoke discharge system is arranged in the device, the safe operation of the detection is ensured; research on the combustion characteristic of the tail gas with different CO components can be performed, and the research on the combustion characteristic of the tail gas can be performed in laboratories and production practice; and the device has the advantages of high feasibility, flexible detection mode, simple process, high safety, good stability and the like, and can be used for controlling the air input and air ratio.

Description

technical field [0001] The invention belongs to the technical field of recovery and utilization of heat energy, and relates to a detection device for combustion characteristics of high-concentration CO-containing tail gas and a detection method for high-concentration CO-containing tail gas combustion characteristics. Background technique [0002] my country's iron and steel metallurgy industry and chemical industry are developing rapidly. Most of the production processes use production equipment with high energy consumption such as electric furnaces, blast furnaces, and converters, which generate a large amount of waste gas and waste heat resources. The tail gas contains a large amount of CO. In addition, there are The arbitrary discharge of carbon dioxide, hydrogen sulfide, hydrogen fluoride, phosphine and other toxic and harmful substances has caused serious pollution to the environment and affected the normal operation of enterprise production. As my country strengthens t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/32
Inventor 郜华萍周洲郜烨宁平
Owner KUNMING UNIV OF SCI & TECH
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