CN206184225U - A high temperature sample gas filter for ammonia escape on -line monitoring system - Google Patents
A high temperature sample gas filter for ammonia escape on -line monitoring system Download PDFInfo
- Publication number
- CN206184225U CN206184225U CN201621258122.1U CN201621258122U CN206184225U CN 206184225 U CN206184225 U CN 206184225U CN 201621258122 U CN201621258122 U CN 201621258122U CN 206184225 U CN206184225 U CN 206184225U
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- China
- Prior art keywords
- filter
- cavity
- line monitoring
- ammonia
- sample gas
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- Expired - Fee Related
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Abstract
The utility model discloses a high temperature sample gas filter for ammonia escape on -line monitoring system, it includes filter body, lie in filter body the filtration cavity and respectively with the pressure connection and the joint of giving vent to anger that filter the cavity intercommunication, pressure connection, filtration cavity and a few the style of calligraphy routes of formation between the joint of giving vent to anger, the filter body top has filtering cavity and external upper cover of keeping apart through the screw rigid coupling, the adaptation has the filter membrane clamping ring on the inner wall of filtration cavity, the internal rigid coupling of filter chamber of filter membrane clamping ring bottom has separates the PVDF filter membrane that is two parts with filtering the cavity. The beneficial effects of the utility model are that gas circuit structure is exquisite compact, and gas circuit structure has been optimized apart from the weak point to a few style of calligraphy routes, and the effectual measurement gas circuit blockage fault who removes dust and thoroughly do not cause that has avoided has improved systematic survey response time, very big stability and the reliability that has improved the system.
Description
Technical field
The utility model is related to boiler high temperature to extract hot wet method method the escaping of ammonia on-line monitoring system, and more particularly, to ammonia is escaped
The high-temperature sample gas filter of ease on-line monitoring system.
Background technology
With economic fast development, the cry of recent year denitration transformation is increased, at present country's coal-burning boiler and work
The denitrating technique of industry furnace flue gas uses selective catalytic reduction mostly（SCR）, and non-selective catalytic reduction
（SNCR）NHX base reductants, such as ammonia, urea are used Deng, denitrating technique；Ammonia and reaction of nitrogen oxides are generated under catalyst action
Nitrogen and water.During denitrating flue gas, the injection rate of ammonia should ensure have enough NH3 and NOX to react, to reduce the discharge of NOX
Amount, avoids to injecting excessive NH3 in flue gas again；Injection excess of ammonia, can not only increase the corrosion of equipment, also generate ammonium
Salt.Reaction generation ammonium salt --- the Ammonium hydrogen sulfate of NH3, H2O and SO3 in flue gas（ABS）, and easily form liquid in equipment surface
Suspended particulate.ABS can absorb the moisture in flue gas when temperature is reduced, and form corrosive solution；In the relatively low catalyst of temperature
Surface, ABS meetings blocking catalyst, causes catalyst to inactivate in flue gas, increases the crushing of reactor.When by follow-up equipment,
Deposition can be produced in the relatively low air preheater heat exchange surface of temperature, increase pressure drop, the efficiency of air preheater be reduced, to rear
Continuous equipment can also produce blocking and corrode.Therefore, during denitration reaction, strictly to control ammonia residual micro with monitoring flue gas
The escaping of ammonia, therefore the escaping of ammonia on-line monitoring bring into schedule.Country's the escaping of ammonia on-line monitoring main flow measuring method is TDLAS at present
Technology, sampling pretreatment extracts hot wet method using high temperature, and in order to avoid generation ammonium salt in monitoring process, whole sample gas extracts pre-
Treatment gas circuit whole process pipeline must be controlled more than 180 DEG C, therefore increases the filtrating smoke dust use environment to measuring sample gas
Difficulty.
Chinese utility model patent application number CN200920039324.0 discloses a kind of online from cleaning ash filter, including
Filter housing, is provided with filter assemblies in shell, also including elastic vibration component, elastic vibration component vibrates under external force, mistake
Filter component links with elastic vibration component, spring and spring base is additionally provided with, along the direction of motion of filter assemblies, filter assemblies one end
Connection elastic vibration component, one end connecting spring, by the vibration of filter assemblies, the dust of attachment is shaken off, and realizes from deashing
Purpose.Its gas circuit structure is more complicated, is still not suitable for hot environment and uses, and has that filtrating smoke dust use environment difficulty is big to ask
Topic.
Utility model content
The technical problems to be solved in the utility model is that the boiler the escaping of ammonia for using high temperature to extract wet heating monitors system on-line
Filter requirement hot environment in system, difficulty in filtration is big, and existing filter gas circuit structure is complicated, easily causes measurement gas circuit and blocks up
Plug failure, for this provides a kind of high-temperature sample gas filter for the escaping of ammonia on-line monitoring system.
The technical solution of the utility model is：For the high-temperature sample gas filter of the escaping of ammonia on-line monitoring system, it includes
Filter body, the filter cavity in filter body and the inlet suction port and outlet that are connected with filter cavity respectively connect
Head, the inlet suction port, forms a few font paths between filter cavity and air outlet adapter, the filter body top passes through spiral shell
Nail is connected with the upper lid that filter cavity is isolated from the outside, and filter membrane pressure ring, the filter are fitted with the inwall of the filter cavity
It is connected with the filter cavity of mould ring bottom and filter cavity is divided into two PVDF filter membranes of part.
The improvement of such scheme is to be fitted with lid sealing ring, the filter membrane pressure ring bottom between the upper lid and filter cavity
Filter membrane sealing ring is fitted between portion and filter cavity.
Inlet suction port described in such scheme and air outlet adapter are stainless steel ferrule fittings.
The material of inlet suction port described in such scheme, air outlet adapter and filter body is 316L stainless steels.
Screw described in such scheme is crossed pan head screw, and the crossed pan head screw has 4, is distributed on Gai Si
Week.
The beneficial effects of the utility model are that gas circuit structure exquisiteness is compact, and a few font paths optimize gas circuit knot apart from short
Structure, effectively avoids the measurement airway blockage failure that dedusting is not caused thoroughly, improves the systematic survey response time, very big
Improve the stability and reliability of system.
Brief description of the drawings
Fig. 1 is the utility model schematic diagram；
Fig. 2 is the top view of Fig. 1；
In figure, 1, filter body, 2, filter cavity, 3, inlet suction port, 4, air outlet adapter, 5, screw, 6, upper lid, 7, filter
Mould ring, 8, PVDF filter membranes, 9, upper lid sealing ring, 10, filter membrane sealing ring.
Specific embodiment
The utility model is described further below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, the utility model includes filter body 1, the and of filter cavity 2 in filter body
The inlet suction port 3 and air outlet adapter 4 for being connected with filter cavity respectively, the inlet suction port, between filter cavity and air outlet adapter
A few font paths are formed, the filter body top is connected with the upper lid 6 that filter cavity is isolated from the outside by screw 5,
Filter membrane pressure ring 7 is fitted with the inwall of the filter cavity, being connected with the filter cavity of the filter membrane pressure ring bottom to filter
Cavity is divided into two PVDF filter membranes 8 of part.
The sample gas that the utility model is mentioned refers to fume sample, and inlet suction port and air outlet adapter can be generally aligned in the same plane
Interior, axis is overlapped, it is also possible to slightly difference in height, and vertical communicating passage is offered between inlet suction port and filter cavity,
The vertical communicating passage can be considered as a part for inlet suction port, inlet suction port, vertical communicating passage, filter cavity with
And the path of substantially several fonts is formd between air outlet adapter, high-temperature sample gas enter from inlet suction port, sequentially pass through vertical
The discharge of communicating passage, filter cavity and air outlet adapter, flue dust when by filter cavity in high-temperature sample gas is by PVDF filter membrane mistakes
Filter, PVDF filter membranes are due to mechanical strength and toughness be high, mould proof property, high-wearing feature, oozing to gas and the high resistance to of liquid
The features such as permeability, heat-resistant stability are good, creep resistance is good in temperature lifting process is particularly suitable for more than 180 DEG C of high temperature ring ring
Border.
In order to ensure the normal work of filter cavity, its sealing is maintained, can be fitted between upper lid and filter cavity
Upper lid sealing ring 9, can be fitted with filter membrane sealing ring 10 between the filter membrane pressure ring bottom and PVDF filter membranes, enhancing filter
Overall tightness.
Inlet suction port and the preferred stainless steel ferrule fitting of air outlet adapter, inlet suction port, air outlet adapter and filter body
Material is preferably 316L stainless steels, and Filter Precision is optional in 0.22 μm of -5 μ m.Filtrating smoke dust high precision, measurement is whole
High temperature, effectively reduces the Contact-sorption reaction of Ammonia, it can be ensured that flue gas Ammonia accurate measurements.
Safeguarded for the ease of installing, the screw is crossed pan head screw, and the crossed pan head screw there are 4, is distributed on
, be arranged on whole device in the high-temperature cabinet in the escaping of ammonia on-line monitoring equipment when using, filter two ends double card by upper lid surrounding
Bell and spigot joint connects the import and export of gas circuit, after measurement sample gas is inlet suction port entrance from the ferrule fitting of left end stainless steel shown in Fig. 1,
Into filter cavity, filter membrane sealing ring 10 is compressed using threaded connection by filter membrane pressure ring in cavity, then seal compression, measured
After sample gas is filtered in cavity by PVDF filter membranes 8, flue dust in measurement sample gas is eliminated, entering analyzer measurement, more
When changing filter membrane piece, only after the crossed pan head screw that need to outward winding on upper lid 6, filter cover is opened, unscrewed by filter membrane pressure ring 7 more
Filter membrane is changed, simple to operate, whole device filtering accuracy is high, filtering accuracy can be strong according to operating mode unrestricted choice, scalability, effectively
Avoid the filtrating smoke dust in measurement process do not fall cause measure pipeline blockage phenomenon, what the equipment of greatly improving was used
Mean free error time.
Claims (5)
1. the high-temperature sample gas filter of the escaping of ammonia on-line monitoring system is used for, and it includes filter body（1）, positioned at filter sheet
Internal filter cavity（2）The inlet suction port for being connected with filter cavity respectively（3）And air outlet adapter（4）, it is characterized in that described
A few font paths are formed between inlet suction port, filter cavity and air outlet adapter, the filter body top passes through screw（5）Gu
It is connected to the upper lid that filter cavity is isolated from the outside（6）, filter membrane pressure ring is fitted with the inwall of the filter cavity（7）, it is described
It is connected with the filter cavity of filter membrane pressure ring bottom and filter cavity is divided into two PVDF filter membranes of part（8）.
2. the high-temperature sample gas filter of the escaping of ammonia on-line monitoring system is used for as claimed in claim 1, it is characterized in that on described
Lid sealing ring is fitted between lid and filter cavity（9）, filter membrane is fitted between the filter membrane pressure ring bottom and PVDF filter membranes
Sealing ring（10）.
3. the high-temperature sample gas filter of the escaping of ammonia on-line monitoring system is used for as claimed in claim 1 or 2, it is characterized in that described
Inlet suction port and air outlet adapter are stainless steel ferrule fittings.
4. the as claimed in claim 3 high-temperature sample gas filter for being used for the escaping of ammonia on-line monitoring system, it is characterized in that it is described enter
The material of gas joint, air outlet adapter and filter body is 316L stainless steels.
5. the high-temperature sample gas filter of the escaping of ammonia on-line monitoring system is used for as claimed in claim 1 or 2, it is characterized in that described
Screw is crossed pan head screw, and the crossed pan head screw has 4, is distributed on lid surrounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621258122.1U CN206184225U (en) | 2016-11-23 | 2016-11-23 | A high temperature sample gas filter for ammonia escape on -line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621258122.1U CN206184225U (en) | 2016-11-23 | 2016-11-23 | A high temperature sample gas filter for ammonia escape on -line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206184225U true CN206184225U (en) | 2017-05-24 |
Family
ID=58723616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621258122.1U Expired - Fee Related CN206184225U (en) | 2016-11-23 | 2016-11-23 | A high temperature sample gas filter for ammonia escape on -line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206184225U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328617A (en) * | 2017-08-10 | 2017-11-07 | 清华大学 | A kind of high-temperature resistant particle thing collection device based on cutting ferrule sealing means |
| CN113551097A (en) * | 2021-06-04 | 2021-10-26 | 清华大学 | In-situ cross-penetration tubular pretreatment device based on gas streaming |
-
2016
- 2016-11-23 CN CN201621258122.1U patent/CN206184225U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328617A (en) * | 2017-08-10 | 2017-11-07 | 清华大学 | A kind of high-temperature resistant particle thing collection device based on cutting ferrule sealing means |
| CN113551097A (en) * | 2021-06-04 | 2021-10-26 | 清华大学 | In-situ cross-penetration tubular pretreatment device based on gas streaming |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20181123 |