CN211706242U

CN211706242U - Anti-blocking device of online measurement high-dust flue gas oxygen content analyzer

Info

Publication number: CN211706242U
Application number: CN201921802122.7U
Authority: CN
Inventors: 田晓兰; 胡兴华; 邓伟伟
Original assignee: Yueyang Clpec Electromechanical Engineering & Technology Co ltd
Current assignee: Yueyang Clpec Electromechanical Engineering & Technology Co ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-10-20
Anticipated expiration: 2029-10-25

Abstract

The utility model discloses an anti-blocking device of an on-line measuring high-dust flue gas oxygen content analyzer, which comprises a water tank and a sampling cylinder, wherein the upper part of the water tank is provided with a water inlet valve and a flue gas sample injection valve, and the bottom of the water tank is provided with a blow-down valve; the lower end of the sampling cylinder extends into the water tank and is fixed on the water tank by a fixing bracket, and the upper part of the sampling cylinder is provided with a smoke outlet valve; mounting flange is installed to the upper end of sampling cylinder, mounting flange is fixed with the zirconia head, the zirconia head stretches into in the sampling cylinder, and with the surface of water tank separates by there is the interval. The utility model discloses wash the flue gas water, just can not block up the first filter screen of zirconium again behind the reentrant zirconia head to guarantee the long period normal operating of zirconia and the normal operating of analysis appearance, and through chemical examination analysis prove, the oxygen content of flue gas surveyed can not be changed in the washing.

Description

Anti-blocking device of online measurement high-dust flue gas oxygen content analyzer

Technical Field

The utility model relates to a get rid of device of high dust thing in flue gas, the device are applicable to all oil refining catalytic unit three and revolve high dust flue gas oxygen content measuring apparatuss and carry out the device of preliminary treatment to the dust on line.

Background

The oxygen content of the triple-rotation regeneration flue gas is a very important parameter for catalytic devices of an oil refinery. Mainly affecting the directionality of the operational adjustment. Firstly, if the indication is larger and the actual amount is smaller, the air distribution is smaller under the control of 2.5 percent of normal index, the air reaches the rated value, the burning load is over, the former influences the burning effect, the regeneration of the regenerated catalyst is not good, and the product distribution is influenced; the latter can cause carbon pile after long-term operation, and the catalysis is high temperature and high pressure, so that the danger is high, and the safe operation is directly influenced. Secondly, the indication is small, the actual air distribution is large, although the regeneration is facilitated to a certain degree, the air supply needs more energy consumption, the energy taken away by the smoke is more, and the work of the smoke machine is also influenced. The oxygen content in the flue gas measured by the oxygen content meter contains high dust catalyst (the dust content is 200mg/Nm 3), and a zirconium oxide zirconium head is blocked, so that the zirconium oxide can not detect the flue gas and is in a long-term failure state and is shut down.

How to remove high dust in the flue gas is the key to ensure the normal operation of the zirconia analyzer. The utility model discloses a carry out preprocessing device to the high dust catalyst of flue gas, the device utilizes a washing case to wash the dust removal dust and then get into the dust of the flue gas of zirconia head almost very little to the flue gas, does not influence its normal operating. At present, no equipment of the type exists in the industry, the application range is wide, almost all refining enterprises need to use, the quantity requirement is large, and the prospect is good.

Disclosure of Invention

The utility model aims at providing an install automatic dust collecting equipment of flue gas before zirconia head appearance gas import, this equipment carry out the washing to coming into the flue gas and guarantee that the flue gas that gets into the pick does not contain the dust, just so can not guarantee oxygen analyzer's long period reliable operation because the high dust catalyst blocks up the pick in the flue gas and can't move.

The utility model discloses a realize by following technique: the utility model provides a stifled device is prevented to high dust flue gas oxygen content analysis appearance of on-line measurement which characterized in that: the sampling device comprises a water tank and a sampling cylinder, wherein a water inlet valve and a flue gas sampling valve are installed on the upper part of the water tank, and a blow-down valve is installed at the bottom of the water tank; the lower end of the sampling cylinder extends into the water tank and is fixed on the water tank by a fixing bracket, and the upper part of the sampling cylinder is provided with a smoke outlet valve; mounting flange is installed to the upper end of sampling cylinder, mounting flange is fixed with the zirconia head, the zirconia head stretches into in the sampling cylinder, and with the surface of water tank separates by there is the interval.

The upper part of the water tank is provided with an overflow port which is higher than the water inlet valve.

The flue gas sampling valve adopts an adjustable V-shaped ball valve.

The flue gas sampling valve is connected with the lower part of the sampling cylinder through a bent pipe.

The lower end opening of the sampling cylinder is a horn-shaped opening.

The distance between the zirconia head and the water surface of the water tank is 3-10 cm.

The utility model discloses wash the flue gas water, just can not block up the first filter screen of zirconium again behind the reentrant zirconia head to guarantee the long period normal operating of zirconia and the normal operating of analysis appearance, and through practice proving, thereby the oxygen content that can not change the flue gas of surveying after confirming the washing through the chemical analysis to flue gas oxygen content around the dust removal guarantees that the oxygen content instruction is accurate.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

in the figure, the device comprises a zirconia head 1, a zirconia head 2, a flue gas outlet valve 3, an overflow port 4, a sampling cylinder 5, a fixed support 6, a water inlet valve 7, a flue gas sample injection valve 8, a blow-down valve 9 and a bent pipe.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific examples:

as can be seen from fig. 1 and 2, the utility model relates to an anti-blocking device for an on-line measurement analyzer of oxygen content in high-dust flue gas, which comprises a water tank and a sampling cylinder, wherein the upper part of the water tank is provided with a water inlet valve, a flue gas sample introduction valve and an overflow port, the lower part of the water tank is provided with a blow-down valve, and the flue gas sample introduction valve is connected with the lower part of the sampling cylinder through a bent pipe, so that the flow velocity of high-temperature flue gas can be slowed down, the vaporization degree after washing is reduced, and; the lower end of the sampling cylinder extends into the water tank and is fixed on the water tank by a fixing support, the lower end opening of the sampling cylinder is a horn-shaped opening, the upper part of the sampling cylinder is provided with a flue gas outlet pipe, the flue gas outlet pipe is provided with a flue gas outlet valve, and the flue gas sampling valve adopts an adjustable V-shaped ball valve; mounting flange is installed to the upper end of sampling cylinder, mounting flange has fixed zirconia head, the zirconia head stretches into in the sampling cylinder, and with the surface of water tank separates 3-10 cm's interval, will guarantee promptly that the contact of zirconia head can not water, also guarantee to detect the flue gas fast. The overflow port of the water tank is higher than the water inlet valve, and when the liquid level is higher than the overflow port, the liquid flows away, so that the liquid level is kept below the overflow port.

The utility model discloses each interface of equipment adopts the movable joint to link to each other, can change the tube coupling in a flexible way like this, and convenient dismantlement, reassembly during the maintenance.

The utility model discloses a working process: clean water enters the water tank through a water inlet valve and is added to the overflow port; the high-dust flue gas enters the lower part of the sampling cylinder through the bent pipe, and the flue gas after being washed enters the cavity at the upper part of the sampling cylinder and then enters the zirconia head; the dust in the flue gas is dissolved into water through water washing, and then flows to a sewage discharge ditch through a sewage discharge valve at the bottom of the water tank. The smoke after dust removal through water washing enters the zirconia head again and then does not block a filter screen of the zirconia head, so that the long-period normal operation of the zirconia and the normal operation of an analyzer are ensured; and the test analysis proves that the oxygen content of the flue gas after washing does not change.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a stifled device is prevented to high dust flue gas oxygen content analysis appearance of on-line measurement which characterized in that: the sampling device comprises a water tank and a sampling cylinder, wherein a water inlet valve and a flue gas sampling valve are installed on the upper part of the water tank, and a blow-down valve is installed at the bottom of the water tank; the lower end of the sampling cylinder extends into the water tank and is fixed on the water tank by a fixing bracket, and the upper part of the sampling cylinder is provided with a smoke outlet valve; mounting flange is installed to the upper end of sampling cylinder, mounting flange is fixed with the zirconia head, the zirconia head stretches into in the sampling cylinder, and with the surface of water tank separates by there is the interval.

2. The anti-blocking device of the online measurement high-dust flue gas oxygen analyzer according to claim 1, characterized in that: the upper part of the water tank is provided with an overflow port which is higher than the water inlet valve.

3. The anti-blocking device of the online measurement high-dust flue gas oxygen analyzer according to claim 1, characterized in that: the flue gas sampling valve adopts an adjustable V-shaped ball valve.

4. The anti-blocking device of the online measurement high-dust flue gas oxygen analyzer according to claim 1, characterized in that: the flue gas sampling valve is connected with the lower part of the sampling cylinder through a bent pipe.

5. The anti-blocking device of the online measurement high-dust flue gas oxygen analyzer according to claim 1, characterized in that: the lower end opening of the sampling cylinder is a horn-shaped opening.

6. The anti-blocking device of the online measurement high-dust flue gas oxygen analyzer according to claim 1, characterized in that: the distance between the zirconia head and the water surface of the water tank is 3-10 cm.