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

Online Dilution Monitoring Device for Total Hydrocarbons in Exhaust Gas

A waste gas and detector technology, which is used in the preparation and sampling of measurement devices, samples for testing, etc., can solve the problems of long response time and inability to monitor a large range of monitoring technology, and achieve the effect of short response time.

Active Publication Date: 2020-03-31
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the response time of the existing monitoring technology is too long, and it is impossible to monitor the fluctuation of the concentration of total hydrocarbons in a large range. A new on-line dilution monitoring device for total hydrocarbons in exhaust gas is provided

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
  • Online Dilution Monitoring Device for Total Hydrocarbons in Exhaust Gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] An on-line dilution monitoring device for total hydrocarbons in exhaust gas, the gas path connection is as follows figure 1 As shown, the exhaust gas 1 in the pipeline passes through the sampling port, passes through the ball valve, and then is sucked by the large-flow sampling pump 2 along the gas pipeline, and then enters the three-way valve 3. Most of the gas samples are discharged through the flow meter 9 with a controller. Return to the exhaust gas pipeline, and the remaining gas samples pass through the three-way valve 4 and the three-way valve 6 successively, and then are sent to the hydrogen flame ionization detector (FID) for detection. On the valve 4, the other outlet of the three-way valve 6 is connected back to the waste gas pipeline. The gas sampling pipelines mentioned in the figure are all stainless steel pipelines with an inner diameter of 4mm except for the section from the three-way valve 6 to the FID detector, which has an inner diameter of 1mm. The l...

Embodiment 2

[0021] An on-line dilution monitoring device for total hydrocarbons in exhaust gas, the gas path connection is as follows figure 1 As shown, the exhaust gas 1 in the pipeline passes through the sampling port, passes through the ball valve, and then is sucked by the large-flow sampling pump 2 along the gas pipeline, and then enters the three-way valve 3. Most of the gas samples are discharged through the flow meter 9 with a controller. Back to the exhaust gas pipeline, the remaining gas samples pass through the three-way valve 4 and three-way valve 6 successively, and then are sent to the hydrogen flame ionization detector for detection. At the same time, the external compressed air passes through the flow meter 8 as a dilution gas and is connected to the three-way valve 4 , the other outlet of the three-way valve 6 is connected back to the waste gas pipeline. The gas sampling pipelines mentioned in the figure are all stainless steel pipelines with an inner diameter of 4mm exce...

Embodiment 3

[0026] An on-line dilution monitoring device for total hydrocarbons in exhaust gas, the gas path connection is as follows figure 1 As shown, the exhaust gas 1 in the pipeline passes through the sampling port, passes through the ball valve, and then is sucked by the large-flow sampling pump 2 along the gas pipeline, and then enters the three-way valve 3. Most of the gas samples are discharged through the flow meter 9 with a controller. Return to the exhaust gas pipeline, and the remaining gas samples pass through the three-way valve 4 and the three-way valve 6 successively, and then are sent to the hydrogen flame ionization detector (FID) for detection. On the valve 4, the other outlet of the three-way valve 6 is connected back to the waste gas pipeline. The gas sampling pipelines mentioned in the figure are all stainless steel pipelines with an inner diameter of 4mm except for the section from the three-way valve 6 to the FID detector, which has an inner diameter of 1mm. The l...

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 an online dilution monitoring device for total hydrocarbon in waste gas, mainly aiming at solving the problems in the prior art that response time is long and the monitoring sensitivity and upper limitation of detection cannot be both considered when the concentration of the total hydrocarbon is fluctuated in a large range. According to the online dilution monitoring device for the total hydrocarbon in the waste gas, provided by the invention, a relatively high linear speed is obtained by adopting a sampling pipeline, from a sampling opening to a detector, of a large-flow sampling pump; a technical scheme of diluting a waste gas sample entering the detector according to changes of a waste gas concentration detected by the detector and a corresponding ratio is adopted so that the technical problem is solved relatively well; the online dilution monitoring device can be used for the online dilution monitoring of the total hydrocarbon in the waste gas.

Description

technical field [0001] The invention relates to an online dilution monitoring device for total hydrocarbons in waste gas. Background technique [0002] During the treatment of high hydrocarbon-containing waste gas in petrochemical and other industries, it is necessary to quickly and accurately obtain the total hydrocarbon concentration of the gas to provide data support for subsequent treatment facilities. At present, the common on-line total hydrocarbon concentration monitoring devices or systems in gas are mostly aimed at monitoring the total hydrocarbon concentration in waste gas discharged from the environment or fixed pollution sources. According to Yin Tianya et al. ", 2011, Vol. 40, No. 2: 209-211), so the monitoring range is usually less than 100,000mg / m 3 (calculated as methane, the same below), did not consider the need for large-scale concentration changes, especially to deal with the impact of high-concentration total hydrocarbon concentration gas, because somet...

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): G01N1/38G01N27/62
CPCG01N1/38G01N27/626G01N2001/386
Inventor 魏新明王琼孙晓英邹兵肖安山姜素霞
Owner CHINA PETROLEUM & CHEM CORP