CN107884518A - Pyrolysis gas oxygen content detecting system - Google Patents
Pyrolysis gas oxygen content detecting system Download PDFInfo
- Publication number
- CN107884518A CN107884518A CN201711283624.9A CN201711283624A CN107884518A CN 107884518 A CN107884518 A CN 107884518A CN 201711283624 A CN201711283624 A CN 201711283624A CN 107884518 A CN107884518 A CN 107884518A
- Authority
- CN
- China
- Prior art keywords
- gas
- pyrolysis gas
- oxygen content
- detecting system
- condenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
Abstract
The invention discloses pyrolysis gas oxygen content detecting system, including：Gas cleaning plant, gas cleaning plant include：Closed tank body, defines storage area in vapor tight tank body, and the bottom of closed tank body is with sewage draining exit, side wall with overfall, top with purification pyrolysis gas outlet；Pyrolysis gas conveyance conduit, pyrolysis gas conveyance conduit is stretched into by the side wall of closed tank body, and end is extended in storage area；Aqueduct, aqueduct are stretched into by the side wall of closed tank body, and end extends to the top of storage area；Sprayer unit, sprayer unit are arranged on aqueduct water outlet end；Condenser, condenser have gas feed and gas vent, and the condenser coil in condenser with connection gas feed and gas vent, gas feed is connected with purification pyrolysis gas outlet；Oxygen detection instrument, oxygen detection instrument are connected with gas vent.It can be realized using the detecting system and the pyrolysis gas oxygen content of low order fine coal fast pyrogenation stove continuously, is efficiently and accurately detected.
Description
Technical field
The invention belongs to testing equipment field, and specifically, the present invention relates to pyrolysis gas oxygen content detecting system.
Background technology
The characteristics of China's energy resource structure is " oil starvation, few gas, rich coal ".Oil and natural gas is external interdependent within the year two thousand thirty
Degree respectively reaches 71% and 42%；Rich coal resources in China, but middle low-rank coal (lignite, jet coal, bituminous coal) account for 55% with
On, in addition to raw coal is used for coking, conversion processing except part, the overwhelming majority is used to directly burn.Coal directly burns, and causes in coal
The petroleum resources being rich in is not obtained also sufficiently refining and utilized, and directly combustion thermal efficiency is low, serious to environmental disruption.Coal
Pyrolysis be to heat coal under an inert atmosphere, produce the products such as semicoke, coal gas and tar, these obtained products again can be with
Cascade utilization, while fully extraction to petroleum resources, the comprehensive utilization ratio of coal is improved again.China's firepower hair in 2014
Electric industry consumes nearly 2,000,000,000 tons of thermal coal, if coal all utilizes low-order coal fine coal rapid pyrolysis apparatus before combustion power generation,
China's Thermal Power Generation Industry will be country's more than 1.4 hundred million tons of oil of production every year, more than the billion cubic meter of natural gas 2000.
On March 9th, 2015, the Ministry of Industry and Information Technology, the Ministry of Finance, which combine, to be issued《Industrial circle Coal Clean efficiently utilizes
Action plan (2015-2020)》, industrial circle Coal Cleanization is utilized and makes layout.21 kinds of works are recommended in action plan
Industry field Coal Clean efficient technique of rainwater utilization, wherein recommended technology are that Shen Wu eco-friendly power sources group company has independent intellectual property right
Core energy-saving emission reduction and atmospheric haze Treatment process：Middle low-rank coal sub-prime cascade utilization new technology is to utilize low order fine coal heat
Solution upgrading sublevel utilizes patented technology.And low-temperature rapid thermal solution stove is that low-order coal carries the key equipment that oil carries gas in low order fine coal,
Need to detect for the oxygen content in low order pulverized coal pyrolysis gas, and then urgent need one kind can be pointedly to low order pulverized coal pyrolysis gas
The equipment that interior oxygen content is detected.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is to propose pyrolysis gas oxygen content detecting system, can realized using the detecting system quick to low temperature in low order fine coal
The pyrolysis gas oxygen content of pyrolysis oven is continuous, efficiently and accurately detects.
According to an aspect of the present invention, the present invention proposes a kind of pyrolysis gas oxygen content detecting system, according to the present invention
Specific embodiment, the pyrolysis gas oxygen content detecting system includes：Gas cleaning plant, the gas cleaning plant include：It is close
Tank body is closed, defines storage area in the vapor tight tank body, the bottom of the closed tank body is with sewage draining exit, side wall with overflow
Mouth, top have purification pyrolysis gas outlet；Pyrolysis gas conveyance conduit, the pyrolysis gas conveyance conduit by the closed tank body side
Wall is stretched into, and end is extended in the storage area；Aqueduct, the aqueduct are stretched by the side wall of the closed tank body
Enter, and end extends to the top of the storage area；Sprayer unit, the sprayer unit are arranged on the aqueduct delivery port
End；Condenser, the condenser have a gas feed and gas vent, have in the condenser connect the gas feed and
The condenser coil of the gas vent, the gas feed are connected with the purification pyrolysis gas outlet；Oxygen detection instrument, it is described
Oxygen detection instrument is connected with the gas vent.
Oxygen content can be effectively protected from there through using the pyrolysis gas oxygen content detecting system of the above embodiment of the present invention
Detector, extend its service life, and can realize pyrolysis gas oxygen content it is continuous, efficiently and accurately detect, so as to more preferable
The operating condition in pyrolysis oven is grasped on ground, ensures the safe and reliable operation of pyrolysis oven.
In addition, pyrolysis gas oxygen content detecting system according to the above embodiment of the present invention can also have skill additional as follows
Art feature：
In some embodiments of the invention, pyrolysis gas oxygen content detecting system further comprises：Blower fan, the blower fan position
It is external in the vapor tight tank and be arranged on the pyrolysis gas conveyance conduit.Treated it is possible thereby to effectively be conveyed into vapor tight tank body
Detect pyrolysis gas.
In some embodiments of the invention, the pyrolysis gas conveyance conduit end extends to the centre bit of the storage area
Put.It is possible thereby to further improve purification and the cooling effect of pyrolysis gas.
In some embodiments of the invention, the sprayer unit be located at the pyrolysis gas conveyance conduit end just on
Side.It is possible thereby to effectively cover pyrolysis gas, purification and cooling effect are improved.
In some embodiments of the invention, the sprayer unit is spherical sprayer unit.It is possible thereby to further improve
Area coverage.
In some embodiments of the invention, there is the hot water inlet that removes contamination on the aqueduct.It is possible thereby to closed
Tank body is cleaned.
In some embodiments of the invention, it is provided with valve between the gas feed and the purification pyrolysis gas outlet
Door.
In some embodiments of the invention, the condenser is electric refrigerant condenser.It is possible thereby to effectively to pyrolysis
The humidity of gas is controlled.
In some embodiments of the invention, pyrolysis gas oxygen content detecting system further comprises：Sensing chamber, the oxygen
The test section of detector is arranged on the detection interior, and the sensing chamber has the import of sample gas and the outlet of sample gas, and the sample gas enters
Mouth is connected with the gas vent of the condenser.By setting sensing chamber to be carried out to the pyrolysis gas after purification cools down
It is temporary, to facilitate the detection of oxygen detection instrument.
Brief description of the drawings
Fig. 1 is the structural representation of pyrolysis gas oxygen content detecting system according to an embodiment of the invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
According to an aspect of the present invention, the present invention proposes a kind of pyrolysis gas oxygen content detecting system.Below with reference to Fig. 1
The pyrolysis gas oxygen content detecting system of the specific embodiment of the invention is described in detail.
According to a particular embodiment of the invention, the pyrolysis gas oxygen content detecting system includes：It is gas cleaning plant 100, cold
Condenser 200 and oxygen detection instrument 300.
Wherein, gas cleaning plant 100 includes：Closed tank body 10, pyrolysis gas conveyance conduit 20, aqueduct 30 and spraying
Device 40.Define storage area 11 in closed tank body 10, the bottom of closed tank body 10 is with sewage draining exit 12, side wall with overfall
13rd, top has purification pyrolysis gas outlet 14；Pyrolysis gas conveyance conduit 20 is stretched into by the side wall of closed tank body 10, and end extends
To storage area 11；Aqueduct 30 is stretched into by the side wall of closed tank body 10, and end extends to the top of storage area 11；Spraying
Device 40 is arranged on the water outlet end of aqueduct 30.Condenser 200 has gas feed 210 and gas vent 220, condenser
There is the condenser coil 230 of connection gas feed and gas vent, gas feed 210 is with purifying the phase of pyrolysis gas outlet 14 in 200
Connection.Oxygen detection instrument 300 is connected with gas vent 220.
In use, first, pyrolysis gas passes through heat to the pyrolysis gas oxygen content detecting system of the above embodiment of the present invention
The storage area 11 that conveyance conduit 20 of venting one's spleen enters in closed tank body 10, by washing the tar and dirt that remove in pyrolysis gas, reach
Preliminary purification and the purpose of cooling, the sewage in closed tank body 10 outside overfall 13 through arranging.Pass through aqueduct 30 and spray simultaneously
Mist device 40 is passed through shower water into closed tank body 10, and pyrolysis gas discharge is washed, reached again behind storage area 11 by shower water
Double purification and the purpose of cooling；Secondly, the pyrolysis gas after purification is entered by the purification pyrolysis gas outlet 14 at the closed top of tank body 10
Enter and condensation process is carried out in condenser 200, to be cooled to pyrolysis gas and to be dehumidified；Finally, the heat after condensation process
Vent one's spleen into the final oxygen content detection of progress in oxygen detection instrument 300.
Oxygen content can be effectively protected from there through using the pyrolysis gas oxygen content detecting system of the above embodiment of the present invention
Detector, extend its service life, and can realize pyrolysis gas oxygen content it is continuous, efficiently and accurately detect, so as to more preferable
The operating condition in pyrolysis oven is grasped on ground, ensures the safe and reliable operation of pyrolysis oven.
According to a particular embodiment of the invention, as shown in figure 1, pyrolysis gas oxygen content detecting system further comprises：Blower fan
50, blower fan 50 is located at outside closed tank body 10 and is arranged on pyrolysis gas conveyance conduit 20.Thus will can be pyrolyzed using blower fan 50
In gas smooth delivery of power to closed tank body 10, and then detection sample is provided for the detection of oxygen content.According to the specific example of the present invention, heat
Gas flowmeter can also further be set on conveyance conduit 20 by venting one's spleen, and then the gas flow of the test sample gas to be checked of conveying is carried out
Monitoring, and then further improve the degree of accuracy of the detection of oxygen content.
According to a particular embodiment of the invention, as shown in figure 1, the end of pyrolysis gas conveyance conduit 20 extends to storage area 11
Center.It is possible thereby to ensure that pyrolysis gas can fully contact with water, to improve clean-up effect.In addition, according to this hair
Bright specific example, sprayer unit 40 are located at the surface of the end of pyrolysis gas conveyance conduit 20.Thus, it is possible to so that sprayer unit
40 fogs sprayed can be completely covered by the pyrolysis gas of discharge in storage area 11, further to improve the purification to pyrolysis gas
And cooling effect.
According to a particular embodiment of the invention, sprayer unit 40 can be spherical sprayer unit.It is possible thereby to further carry
The area coverage of high fog, improve the purification to pyrolysis gas and cooling effect.
According to a particular embodiment of the invention, as shown in figure 1, having the hot water inlet 31 that removes contamination on aqueduct 30.Pass through
Unlatching is removed contamination hot water inlet 31, can be by HIGH TEMPERATURE PURGE water through the jet cleaning tank body of sprayer unit 40, and soiling solution is through closed tank body 10
The sewage draining exit 12 of bottom excludes, and cleaning finishes enough recovery detections and used.Therefore, the pyrolysis gas oxygen content detection of the embodiment of the present invention
System can more facilitate by refer to HTHP hot water and carry out processing of removing contamination to closed tank body 10.
According to a particular embodiment of the invention, as shown in figure 1, being set between gas feed 210 and purification pyrolysis gas outlet 14
Valve 15 is equipped with, ensures the on-bne repair of condenser 200 and oxygen detection instrument 300.
According to a particular embodiment of the invention, condenser 200 is electric refrigerant condenser.Thus electric refrigerant condenser temperature can
Adjust, can temperature in real-time monitoring condenser 200, and then sample air humidity degree can be controlled as needed, improve the standard of subsequent detection
Exactness.
According to a particular embodiment of the invention, as shown in figure 1, pyrolysis gas oxygen content detecting system further comprises：Detection
Room 400, the test section of oxygen detection instrument 300 are arranged in sensing chamber 400, and there is sample gas import 410 and sample gas to go out for sensing chamber 400
Mouth 420, sample gas import 410 is connected with the gas vent 220 of condenser 200.By setting sensing chamber 400 can be to by net
Change the pyrolysis gas after cooling to be cached, reduce flow velocity and the fluctuation of detection indoor gas, improve the detection of oxygen detection instrument 300
Accuracy.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be any
Combined in an appropriate manner in individual or multiple embodiments or example.In addition, in the case of not conflicting, the technology of this area
Different embodiments or example and the feature of different embodiments or example described in this specification can be combined by personnel
And combination.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (9)
- A kind of 1. pyrolysis gas oxygen content detecting system, it is characterised in that including：Gas cleaning plant, the gas cleaning plant include：Closed tank body, defines storage area in the vapor tight tank body, the bottom of the closed tank body with sewage draining exit, side wall with Overfall, top have purification pyrolysis gas outlet；Pyrolysis gas conveyance conduit, the pyrolysis gas conveyance conduit is stretched into by the side wall of the closed tank body, and end extends to institute State in storage area；Aqueduct, the aqueduct is stretched into by the side wall of the closed tank body, and end extends to the upper of the storage area Side；Sprayer unit, the sprayer unit are arranged on the aqueduct water outlet end；Condenser, the condenser have gas feed and gas vent, have in the condenser and connect the gas feed With the condenser coil of the gas vent, the gas feed is connected with the purification pyrolysis gas outlet；Oxygen detection instrument, the oxygen detection instrument are connected with the gas vent.
- 2. pyrolysis gas oxygen content detecting system according to claim 1, it is characterised in that further comprise：Blower fan, it is described Blower fan is located at the vapor tight tank in vitro and is arranged on the pyrolysis gas conveyance conduit.
- 3. pyrolysis gas oxygen content detecting system according to claim 1, it is characterised in that the pyrolysis gas conveyance conduit end End extends to the center of the storage area.
- 4. pyrolysis gas oxygen content detecting system according to claim 3, it is characterised in that the sprayer unit is positioned at described The surface of pyrolysis gas conveyance conduit end.
- 5. pyrolysis gas oxygen content detecting system according to claim 4, it is characterised in that the sprayer unit is spherical spray Mist device.
- 6. pyrolysis gas oxygen content detecting system according to claim 1, it is characterised in that have on the aqueduct clear Dirty hot water inlet.
- 7. pyrolysis gas oxygen content detecting system according to claim 1, it is characterised in that the gas feed with it is described net Valve is provided between change pyrolysis gas outlet.
- 8. pyrolysis gas oxygen content detecting system according to claim 1, it is characterised in that the condenser is cold for electricity refrigeration Condenser.
- 9. pyrolysis gas oxygen content detecting system according to claim 1, it is characterised in that further comprise：Sensing chamber, institute The test section for stating oxygen detection instrument is arranged on the detection interior, and the sensing chamber has the import of sample gas and the outlet of sample gas, described The import of sample gas is connected with the gas vent of the condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711283624.9A CN107884518A (en) | 2017-12-07 | 2017-12-07 | Pyrolysis gas oxygen content detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711283624.9A CN107884518A (en) | 2017-12-07 | 2017-12-07 | Pyrolysis gas oxygen content detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107884518A true CN107884518A (en) | 2018-04-06 |
Family
ID=61773410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711283624.9A Pending CN107884518A (en) | 2017-12-07 | 2017-12-07 | Pyrolysis gas oxygen content detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107884518A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821346A (en) * | 2006-01-19 | 2006-08-23 | 山东省科学院能源研究所 | Method and device for removing biomass pyrolytic gasifying tar oil |
| CN101230283A (en) * | 2008-02-01 | 2008-07-30 | 抚顺矿业集团有限责任公司 | Oil shale retorting process reclaiming method |
| CN104910971A (en) * | 2015-05-27 | 2015-09-16 | 贵州德鑫源工程设备有限公司 | Biomass pyrolysis gas purifier |
| CN204661625U (en) * | 2015-05-07 | 2015-09-23 | 新奥科技发展有限公司 | A kind of gas cleaning system and gasification system |
| CN105757673A (en) * | 2016-03-30 | 2016-07-13 | 四川天壹环保科技有限公司 | Small-scale efficient domestic garbage gasification incineration system and incineration method |
| WO2016181215A1 (en) * | 2015-05-13 | 2016-11-17 | NILI, Fatma | Installation and method for purifying industrial combustion gases |
| CN106986343A (en) * | 2017-05-27 | 2017-07-28 | 神雾科技集团股份有限公司 | A kind of calcium carbide furnace system of blowing oxygen and heat integration |
| CN107216894A (en) * | 2017-06-08 | 2017-09-29 | 江苏省冶金设计院有限公司 | The system and method for handling low-order coal |
| CN107282607A (en) * | 2017-08-15 | 2017-10-24 | 爱润森德（天津）能源科技有限公司 | A kind of oil-containing solid waste microwave thermal desorption recycling treatment system and processing method |
| CN207662870U (en) * | 2017-12-07 | 2018-07-27 | 北京神雾电力科技有限公司 | Pyrolysis gas oxygen content detecting system |
-
2017
- 2017-12-07 CN CN201711283624.9A patent/CN107884518A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821346A (en) * | 2006-01-19 | 2006-08-23 | 山东省科学院能源研究所 | Method and device for removing biomass pyrolytic gasifying tar oil |
| CN101230283A (en) * | 2008-02-01 | 2008-07-30 | 抚顺矿业集团有限责任公司 | Oil shale retorting process reclaiming method |
| CN204661625U (en) * | 2015-05-07 | 2015-09-23 | 新奥科技发展有限公司 | A kind of gas cleaning system and gasification system |
| WO2016181215A1 (en) * | 2015-05-13 | 2016-11-17 | NILI, Fatma | Installation and method for purifying industrial combustion gases |
| CN104910971A (en) * | 2015-05-27 | 2015-09-16 | 贵州德鑫源工程设备有限公司 | Biomass pyrolysis gas purifier |
| CN105757673A (en) * | 2016-03-30 | 2016-07-13 | 四川天壹环保科技有限公司 | Small-scale efficient domestic garbage gasification incineration system and incineration method |
| CN106986343A (en) * | 2017-05-27 | 2017-07-28 | 神雾科技集团股份有限公司 | A kind of calcium carbide furnace system of blowing oxygen and heat integration |
| CN107216894A (en) * | 2017-06-08 | 2017-09-29 | 江苏省冶金设计院有限公司 | The system and method for handling low-order coal |
| CN107282607A (en) * | 2017-08-15 | 2017-10-24 | 爱润森德（天津）能源科技有限公司 | A kind of oil-containing solid waste microwave thermal desorption recycling treatment system and processing method |
| CN207662870U (en) * | 2017-12-07 | 2018-07-27 | 北京神雾电力科技有限公司 | Pyrolysis gas oxygen content detecting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207702656U (en) | A kind of monoblock type mine return air gravity assisted heat pipe heat-exchange unit | |
| CN207662870U (en) | Pyrolysis gas oxygen content detecting system | |
| CN105536412B (en) | A kind of water saving fixtures system of efficient water-removing mist recovery industrial water | |
| CN107884518A (en) | Pyrolysis gas oxygen content detecting system | |
| CN102879529A (en) | Wet type sample gas analyzing system applicable to monitoring of combustion conditions of coal-fired kilns | |
| CN206008370U (en) | Moving-bed type VOC adsorption/desorption purifiers | |
| CN204841345U (en) | Vacuum drying active carbon waste gas pollution control and treatment device | |
| CN109589639A (en) | A kind of steel blast furnace slag flushing steam white cigarette elimination system | |
| CN103528388B (en) | Closed ferroalloy furnace coal gas dry method purification and recovery system | |
| CN203616331U (en) | Multi-unit VOC (volatile organic compound) test system | |
| CN102277179B (en) | Economic dry quenching device | |
| CN102698458B (en) | Method for reducing emission and recycling atmospheric pollutants in emptying and cleaning process of chemical plant installations | |
| CN212999291U (en) | Be used for flue gas to take off white device | |
| CN205024251U (en) | Integrative tower of adjustable circumferential weld of primary smoke of converter washing dehydration defogging | |
| CN208943774U (en) | A kind of condensation cycle gain of heat batch circulating grain products drying energy saving device | |
| CN208791558U (en) | A kind of steam pressure quenching system | |
| CN203929459U (en) | Calorific value of gas sampling system | |
| CN113599924A (en) | Natural gas gathering station flare gas recovery process and corollary equipment | |
| CN203964600U (en) | Residual neat recovering system in grain and oil expressing process | |
| CN206887022U (en) | A kind of solid garbage as resource utilizes system | |
| CN208003700U (en) | A kind of lacquer spraying waste gas processing equipment | |
| CN206974240U (en) | A kind of cooling device of sulphur gas air blast cooling | |
| CN205156644U (en) | Multiple spot position waste heat recovery of coke -oven plant utilizes system | |
| CN104689682A (en) | Organic waste gas treatment system | |
| CN204723961U (en) | A kind of cleaner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201116 Address after: 102209 226, 2nd floor, building 71, 30 Litang Road, Changping District, Beijing Applicant after: Beijing Hengfeng Yaye Technology Development Co., Ltd Address before: 102200 Beijing city Changping District Machi Town kamis Road No. 18 building 201 room 2 Applicant before: BEIJING SHENWU POWER TECHNOLOGY Co.,Ltd. |