CN112710532A - Flying ash ammonia analytical equipment - Google Patents
Flying ash ammonia analytical equipment Download PDFInfo
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- CN112710532A CN112710532A CN202011549613.2A CN202011549613A CN112710532A CN 112710532 A CN112710532 A CN 112710532A CN 202011549613 A CN202011549613 A CN 202011549613A CN 112710532 A CN112710532 A CN 112710532A
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- heating
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- tube
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
Abstract
The invention discloses a fly ash ammonia analysis device which comprises a sampling tube, a heating component, a filter element, an adapter and a sample gas tube, wherein the inlet and the outlet of the sampling tube are communicated with the tube cavity of the sampling tube; the heating assembly comprises a heating body, the heating body is provided with a heating cavity, and the heating cavity is communicated with the tube cavity of the sampling tube; the filter element filters the smoke passing through the second end of the heating cavity; the adapter is internally provided with a first channel, the first channel comprises a first vent hole and a second vent hole, the other end of the heating body in the length direction is connected with one end of the adapter in the length direction, and the first channel is communicated with the heating cavity; one end of the sample tube is connected with the second vent so that the tube cavity of the sample tube is communicated with the first channel. The fly ash ammonia analysis device provided by the invention heats the flue gas by using the heating element, can be used for analyzing ammonia adsorbed by fly ash in the flue gas, and is beneficial to measuring the total content of ammonia in the flue gas.
Description
Technical Field
The invention relates to the technical field of ammonia monitoring equipment, in particular to a fly ash ammonolysis device.
Background
The SCR denitration technology is widely applied to industries such as coal-fired power plants and the like, but the escape of reducing agent ammonia is inevitable. Part of the escaped ammonia will be adsorbed in the fly ash. In the correlation technique, ammonia escape monitoring equipment monitors the flue gas, can measure the ammonia of free state, and the ammonia that adsorbs in the fly ash can't be analyzed out, can't measure the ammonia that adsorbs in the fly ash.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides a fly ash ammonia analysis device, which can be used for analyzing ammonia adsorbed in fly ash, and is beneficial to measuring the total content of ammonia in flue gas.
The fly ash ammonia analysis device according to the embodiment of the invention comprises: the sampling tube is provided with an inlet at one end in the length direction and an outlet at the other end in the length direction, and the inlet and the outlet are both communicated with a tube cavity of the sampling tube; the heating assembly comprises a heating body, the heating body is provided with a heating cavity, the heating cavity is provided with a first end and a second end which are opposite in a first direction, one end of the heating body in the length direction is connected with the other end of the sampling tube in the length direction, and the first end of the heating cavity is communicated with the outlet so that the heating cavity is communicated with the tube cavity of the sampling tube; a filter element at least partially filling the second end of the heating chamber to filter the flue gas passing through the second end of the heating chamber, wherein the filter element has a filter chamber; the heating element comprises a heating element body, a switching body and a heating element, wherein the switching body is internally provided with a first channel, the first channel comprises a first vent hole and a second vent hole, the other end of the heating element in the length direction is connected with one end of the switching body in the length direction, and the first vent hole is communicated with a filtering cavity so that the first channel is communicated with the filtering cavity; and one end of the sample gas pipe is connected with the second vent so as to enable the tube cavity of the sample gas pipe to be communicated with the first channel.
According to the fly ash ammonia analysis device provided by the embodiment of the invention, the heating body is utilized to heat the flue gas, the ammonia adsorbed by the fly ash in the flue gas can be analyzed, and the total content of ammonia in the flue gas can be favorably measured.
In some embodiments, the fly ash ammonia destruction device further comprises a first purge pipe, the first channel further comprises a third vent, and one end of the first purge pipe is connected to the third vent so that the lumen of the first purge pipe communicates with the first channel.
In some embodiments, the filter element includes a core and a filter cavity enclosed by the core, the filter cavity has a first end and a second end opposite in a first direction, the first end of the filter cavity is closed, the first end of the filter cavity extends into the heating cavity, the second end of the filter cavity is open, and the second end of the filter cavity is in communication with the first vent port such that the first passage is in communication with the filter cavity.
In some embodiments, the core of the filter element comprises a first portion, a second portion and a third portion, the second portion is located between the first portion and the third portion in the first direction, the outer peripheral surface of the first portion and the peripheral wall surface of the heating chamber define a first annular cavity, the outer peripheral surface of the third portion and the peripheral wall surface of the heating chamber define a second annular cavity, the outer peripheral surface of the second portion has an annular projection, the outer peripheral surface of the annular projection abuts against the peripheral wall surface of the heating chamber, the annular projection has a through hole, the through hole penetrates through the annular projection in the first direction, and the first annular cavity and the second annular cavity are communicated through the through hole.
In some embodiments, the fly ash ammonia desorption device further comprises a second purging pipe, the adapter body further comprises a second channel, the second channel comprises a fourth air port and a fifth air port, one end of the second purging pipe is connected with the fourth air port to communicate the lumen of the second purging pipe with the second channel, and the fifth air port is communicated with the first annular cavity to communicate the second channel with the first annular cavity.
In some embodiments, the heating assembly further comprises a shield shell having a cavity in which the heat generating body is disposed and a spirally wound coil between an inner circumferential surface of the shield shell and an outer circumferential surface of the heat generating body.
In some embodiments, the heating assembly further comprises a heat insulation layer, the heat insulation layer is sleeved on the outer circumferential surface of the heating body, and the coil is located between the inner circumferential surface of the protective shell and the outer circumferential surface of the heat insulation layer.
In some embodiments, the heating assembly further comprises an insulating plate provided on an inner wall surface of the shield shell.
In some embodiments, the fly ash ammonia destruction device further comprises a temperature measuring instrument capable of measuring the temperature of the heat generating body.
In some embodiments, the fly ash ammonia desorption device further comprises a support frame, the support frame comprises a mounting flange and a connecting pipe, one end of the connecting pipe in the length direction is connected with the mounting flange, and the other end of the connecting pipe in the length direction is connected with the adapter.
Drawings
FIG. 1 is a schematic structural diagram of a fly ash ammonia desorption apparatus according to an embodiment of the present invention.
Fig. 2 is a partially enlarged view of fig. 1.
Fig. 3 is a schematic structural diagram of an adapter of a fly ash ammonia desorption device according to an embodiment of the present invention.
FIG. 4 is a schematic diagram of a filter element of a fly ash ammonia desorption device according to an embodiment of the present invention.
FIG. 5 is a schematic diagram of the sampling tube and heating element of a fly ash ammonia destruction device according to an embodiment of the present invention.
FIG. 6 is a schematic perspective view of a fly ash ammonia desorption device according to an embodiment of the present invention.
FIG. 7 is a schematic perspective view of a fly ash ammonia desorption apparatus according to an embodiment of the present invention.
Reference numerals:
a fly ash ammonia analyzer 1000;
a sampling tube 100; an inlet 110; an outlet 120; a flange 130;
a heating assembly 200; a protective shell 210; a main housing 211; a left end plate 212; a first perforation 2121; a right end plate 213; a main board 2131; a fastening plate 2132; a second perforation 2133; a heating element 220; a heating chamber 221; a coil 230; a line inlet end 231; an outlet terminal 232; a thermal insulation layer 240; an insulating plate 250; a first insulating plate 251; a second insulating plate 252; a third insulating plate 253;
an adaptor body 300; a boss 301; a first vent 310; a fifth vent 320;
a filter element 400; a core body 410; a first portion 411; a second portion 412; a third portion 413; a filter chamber 420; an annular projection 430; a through hole 431;
a sample gas tube 500;
a first purge tube 610; a second purge tube 620;
a first transition chamber 710; a second transition chamber 720;
a support frame 800; a mounting flange 810; a connection pipe 820; a first threading tube 830; a second threading tube 840; a third threading tube 850;
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 7, a fly ash ammonia desorption device 1000 according to an embodiment of the present invention includes a sampling tube 100, a heating assembly 200, an adapter 300, a filter element 400, a sample gas tube 500, and a support frame 800.
As shown in fig. 1 and 5, one end of the sampling tube 100 in the longitudinal direction (e.g., the right end of the sampling tube 100 in fig. 1) has an inlet 110, the other end of the sampling tube 100 in the longitudinal direction (e.g., the left end of the sampling tube 100 in fig. 1) has an outlet 120, and both the inlet 110 and the outlet 120 are communicated with the lumen of the sampling tube 100.
Specifically, the right end of the lumen of the sampling tube 100 is closed, and the left end of the lumen of the sampling tube 100 is open, i.e., the left end of the lumen of the sampling tube 100 is open. The inlet 110 includes a plurality of rectangular holes provided on the outer circumferential surface of the sampling tube 100, the plurality of rectangular holes being annularly arranged around a center line of the sampling tube 100 extending in the left-right direction. The outlet 120 is an open end of the lumen of the sampling tube 100. The smoke enters the sampling tube 100 through the rectangular hole of the inlet 110 and exits the open end of the lumen of the sampling tube 100. The size of the rectangular aperture is smaller than the size of the open end of the coupon 100. Therefore, the rectangular holes can isolate large-size impurities, smoke is not easy to block in the tube cavity of the sampling tube 100, and the smoke can be smoothly discharged from the outlet 120.
As shown in fig. 1 and 5, the heating assembly 200 includes a heating body 220. The heating body 220 has a heating chamber 221, and the heating chamber 221 has a first end (e.g., a left end of the heating chamber 221 in fig. 1) and a second end (e.g., a right end of the heating chamber 221 in fig. 1) opposite in the first direction. One end in the longitudinal direction of the heating element 220 (e.g., the right end of the heating element 220 in fig. 1) is connected to the other end in the longitudinal direction of the sampling tube 100. A first end of the heating chamber 221 communicates with the outlet 120 so that the heating chamber 221 communicates with the lumen of the sampling tube 100. The flue gas in the tube cavity of the sampling tube 100 can enter the heating cavity 221 from the sampling tube 100 and be heated in the heating cavity 221. Thus, ammonia adsorbed by the fly ash in the flue gas can be desorbed in the heating chamber 221.
At least a portion of the cartridge 400 fills the second end of the heating chamber 221 and the cartridge 400 has a filter chamber 420. The filter element 400 is capable of filtering the flue gas passing through the second end of the heating chamber 221. That is, ammonia within the heating chamber 221 is exhausted from the second end of the heating chamber 221 and is filtered by the filter element 400 to trap the fly ash within the heating chamber 221.
According to the fly ash ammonia analysis device 1000 of the embodiment of the invention, the flue gas in the flue enters the heating cavity 221 of the heating element 220 from the sampling pipe 100, the heating element 220 generates heat to heat the flue gas, and after the fly ash adsorbing ammonia in the flue gas is heated in the heating cavity 221, the ammonia is separated from the fly ash. Then, the flue gas passes through the filter element 400 to intercept the fly ash by the filter element 400, and the flue gas without the fly ash enters the filter chamber 420, further enters the adapter 300, and is then discharged from the sample gas pipe 500.
Therefore, the fly ash ammonia analysis device 1000 according to the embodiment of the invention can analyze ammonia adsorbed by fly ash in flue gas, and is beneficial to measuring the total content of ammonia in flue gas.
In some embodiments, as shown in fig. 1 and 5, the heating assembly 200 further comprises a protective shell 210 and a helically wound coil 230. The protective case 210 has a cavity in which the heating element 220 is disposed. The coil 230 is located between the inner circumferential surface of the shield case 210 and the outer circumferential surface of the heating body 220. The coil 230 is supplied with a high-frequency current to generate an alternating magnetic field that changes at a high speed, and the heating element 220 generates heat in the magnetic field. The temperature in the heating chamber 221 can reach 700-800 degrees celsius at the maximum. Therefore, the heating element 220 heats by electromagnetic induction, and the heating efficiency is high, and the temperature in the heating chamber 221 can be easily controlled. It is understood that the heating element 220 may be heated by electromagnetic induction, and may be heated by other methods.
Specifically, as shown in fig. 1 and 5, the shield case 210 includes a main case 211 and left and right end plates 212 and 213 that are opposed in the left-right direction. One end of the heating element 220 in the longitudinal direction is connected to the inside of the right end plate 213 (for example, the left side of the right end plate 213 in fig. 1), the other end of the heating element 220 in the longitudinal direction is connected to the inside of the left end plate 212 (for example, the right side of the left end plate 212 in fig. 1), and one end of the adaptor 300 in the longitudinal direction is connected to the outside of the left end plate 212 (for example, the left side of the left end plate 212 in fig. 1). The other end of the heating element 220 in the longitudinal direction is connected to one end of the adaptor 300 in the longitudinal direction via the left end plate 212. That is, the main housing 211, the left end plate 212, and the right end plate 213 enclose a cavity of the shield case 210, and the heat generating body 220 is completely located in the cavity.
As shown in FIGS. 1 and 5, the left end of the sampling tube 100 is passed through the right end plate 213 and contacted with the right end of the heating element 220. The right end plate 213 and the right end of the heating element 220 are connected by a bolt. The left end of the sampling tube 100 has a flange 130, the right end plate 213 has a second through hole 2133, the second through hole 2133 is a stepped hole, and the flange 130 can be engaged with the second through hole 2133, so that the sampling tube 100 is fixed to the right end plate 213.
As shown in fig. 5, the right end plate 213 includes a main plate 2131 and a fastening plate 2132, and the fastening plate 2132 has a substantially annular shape in cross section. The outer peripheral surface of the fastening plate 2132 is connected to the main case 211, the inner peripheral surface of the fastening plate 2132 is connected to the outer peripheral surface of the main plate 2131, and the second penetrating hole 2133 is provided in the main plate. Since the main plate 2131 is bolted to the right end of the heating element 220 and the main plate 2131 is detachably connected to the fastening plate 2132, the main plate 2131 can be simply removed, and the sampling tube 100 can be removed after the main plate 2131 is removed. Therefore, the sampling tube 100 can be conveniently and quickly disassembled, and the sampling tube 100 can be quickly cleaned.
In some embodiments, as shown in fig. 1 and 5, the heating assembly 200 further includes an insulating layer 240. The heat insulating layer 240 is fitted around the outer circumferential surface of the heating element 220, and the coil 230 is located between the inner circumferential surface of the protective case 210 and the outer circumferential surface of the heat insulating layer 240. Therefore, the heat insulating layer 240 can protect the coil 230 while preventing the coil 230 from being in a high-temperature environment while insulating the heat generating body 220. In addition, the thermal insulation layer 240 can support the coil 230, i.e., the coil is spirally wound on the outer circumferential surface of the thermal insulation layer.
In some embodiments, as shown in fig. 1 and 5, the heating assembly 200 further includes an insulation plate 250, and the insulation plate 250 is provided on an inner wall surface of the shield shell 210. Specifically, the insulating plate 250 includes a first insulating plate 251, a second insulating plate 252, and a third insulating plate 253. The first insulating plate 251 is provided at the inner circumferential surface of the main housing 211. A second insulating plate 252 is provided inside the left end plate 212. A third insulating plate 253 is provided inside the right end plate 213. Accordingly, the heating element 200 does not leak electricity, and the safety of the fly ash ammonia analyzing apparatus 1000 according to the embodiment of the present invention can be improved.
In some embodiments, the fly ash ammonia desorption device 1000 according to the embodiment of the present invention further includes a temperature measuring instrument (not shown in the figure) capable of measuring the temperature of the heating element 220. Specifically, the temperature measuring instrument is a thermocouple having a first thermocouple wire and a second thermocouple wire. The outer circumferential surface of the heating element 220 is provided with a first temperature measuring point and a second temperature measuring point. The first thermocouple wire and the second thermocouple wire are respectively connected with the first temperature measuring point and the second temperature measuring point. The thermocouple can monitor the temperature of the heating element 220, which is beneficial to controlling the heating temperature of the heating element 220.
In some embodiments, as shown in fig. 1-3, a fly ash ammonia destruction unit 1000 according to embodiments of the present invention further comprises a first purge pipe 610. The first passage further includes a third vent, one end of the first purge tube 610 is connected to the third vent, and the lumen of the first purge tube 610 is in communication with the first passage. The other end of the first blowing pipe 610 is connected with an air blowing device. It is understood that the blowing device can be a blowing pump, and can also be other devices capable of generating high-pressure gas.
The first purge pipe 610 supplies high-pressure gas into the first passage and the heating chamber 221, so that the filter element 400 and the heating chamber 221 can be purged. That is, the high pressure gas introduced from the first purge pipe 610 can blow the fly ash adhered to the filter element 400 back into the heating chamber 221, and blow the fly ash deposited in the heating chamber 221 back into the flue through the sampling pipe 100. Therefore, the fly ash ammonia analysis device 1000 according to the embodiment of the invention can periodically purge the filter element 400 and the heating cavity 221, so as to avoid blockage and improve the service life.
In some embodiments, as shown in fig. 1-4, a filter cartridge 400 includes a core 410 and a filter cavity 420 bounded by the core 410. The filter cavity 420 has a first end (e.g., the right end of the filter cavity 420 in fig. 4) and a second end (e.g., the right end of the filter cavity 420 in fig. 4) opposite in a first direction (e.g., the left-right direction in fig. 1). The first end of the filter cavity 420 is closed and the second end of the filter cavity 420 is open. That is, the filter element 400 is generally cylindrical. Therefore, the filter element 400 has a large filter area, the filter element 400 is not easily clogged, and the amount of gas passing through the filter element 400 per unit time increases. Thus, the fly ash ammonia analyzing apparatus 1000 according to the embodiment of the present invention has high operation efficiency.
As shown in fig. 1-4, a first end of the filter chamber 420 extends into the heating chamber 221. That is, the filter element 400 is located within the heating chamber 221, and the filter element 400 filters ammonia at a temperature at which ammonia can be separated from fly ash. Therefore, after the ammonia is filtered by the filter element 400, the ammonia is completely separated from the fly ash, and the fly ash is prevented from adsorbing the ammonia again. Therefore, the fly ash ammonia desorption device 1000 according to the embodiment of the invention can completely desorb the ammonia adsorbed by the fly ash. Specifically, the filter element is made of stainless steel, so the filter element can be provided in a high-temperature environment. It is understood that the material of the filter element is not limited to stainless steel, and the filter element may be made of ceramic or other high temperature resistant materials.
As shown in fig. 1-4, the second end of the filter chamber 420 is in communication with the first vent 310 and the first passage is in communication with the filter chamber 420. That is, the first purge pipe 610 blows the high pressure gas into the filter chamber 420 through the first passage, and the high pressure gas in the filter chamber 420 enters the heating chamber 221 through the filter holes of the core 410. The first purge pipe 610 can more conveniently purge the filter cartridge 400.
In some embodiments, as shown in fig. 4, core 410 of filter cartridge 400 includes a first portion 411, a second portion 412, and a third portion 413. The second portion 412 is located between the first portion 411 and the third portion 413 in the first direction. Specifically, the core 410 is divided into three portions, which are a first portion 411, a second portion 412, and a third portion 413 from left to right.
As shown in fig. 4, the outer peripheral surface of the first portion 411 and the peripheral wall surface of the heating cavity 221 define a first annular cavity, the outer peripheral surface of the third portion 413 and the peripheral wall surface of the heating cavity 221 define a second annular cavity, the outer peripheral surface of the second portion 412 has an annular protrusion 430, and the outer peripheral surface of the annular protrusion 430 abuts against the peripheral wall surface of the heating cavity 221. That is, the filter cartridge 400 is connected to the heating body 220 through the annular protrusion 430.
As shown in fig. 4, the annular boss 430 has a through hole 431, the through hole 431 penetrates the annular boss 430 in the first direction, and the first annular chamber and the second annular chamber communicate through the through hole 431. Specifically, the through hole 431 is plural, and the plural through holes 431 are annularly arranged around a center line of the annular protrusion 430 extending in the left-right direction.
In some embodiments, as shown in fig. 1-4, a fly ash ammonia destruction unit 1000 according to embodiments of the present invention further comprises a second purge pipe 620. Adapter body 300 also has a second channel (not shown) therein, which includes a fourth vent and a fifth vent 320. One end of the second purging pipe 620 is connected with the fourth air port to communicate the lumen of the second purging pipe 620 with the second channel, the fifth air port 320 is communicated with the first annular cavity, and the second channel is communicated with the first annular cavity. The other end of the second purge pipe 620 is connected to a blowing device. It is understood that the blowing device can be a blowing pump, and can also be other devices capable of generating high-pressure gas.
The second purging pipe 620 sends the high-pressure gas into the first annular cavity through the second passage, and the high-pressure gas in the first annular cavity enters the second annular cavity through the through hole 431 to purge the fly ash deposited in the heating cavity 221 and the fly ash on the outer surface of the core body 410, and the fly ash is blown back to the flue from the sampling pipe 100. Therefore, the second purge pipe 620 can better purge the filter element 400 and the fly ash deposited in the heating chamber 221. Therefore, the fly ash ammonia desorption device 1000 according to the embodiment of the invention has better purging effect.
As shown in fig. 1-5, the adapter body 300 has a boss 301 at the right end, and the protective shell 210 has a first through hole 2121 at the left end plate 212. The boss 301 extends into the first penetration hole 2121. The right end face of the boss 301 has a groove, and the groove is a first transition cavity 710. The first transition chamber 710 communicates with both the first vent 310 and the left end of the filter chamber 420 such that the first transition chamber 710, the first passage, and the filter chamber 420 communicate. The outer peripheral surface of the first portion 411 of the core 410 defines a second transition chamber 720 with the right end surface of the boss 301 and a portion of the inner wall surface of the first through hole 2121. The second transition chamber 720 communicates with the fifth vent 320 and the left end of the first annular chamber, such that the second transition chamber 720, the second passage, and the first annular chamber communicate.
As shown in fig. 1 and 4, a gasket is provided between one end in the longitudinal direction of the heating element 220 and the other end in the longitudinal direction of the sampling tube 100. A sealing gasket is arranged between one end of the adaptor 300 in the length direction and the outer side of the left end plate 212. Therefore, the sealing gasket seals the cavity of the protective shell 210, so as to prevent the flue gas from entering the cavity, and the service life of the fly ash ammonolysis device 1000 is prolonged. In addition, the cavity is isolated from air, so that the heating element 220 is in an oxygen-free environment, and the oxidation of the heating element 220 is avoided.
As shown in fig. 2, the peripheral wall of the first transition chamber 710 is provided with a gasket that separates the first transition chamber 710 from the second transition chamber 720. Therefore, the first purge pipe 610 and the second purge pipe 620 can be independently operated. Therefore, the fly ash ammonia desorption device 1000 according to the embodiment of the invention has better purging effect.
It will be appreciated that the seal may be a graphite pad or an asbestos pad. Therefore, the gasket can be used in a high-temperature environment.
As shown in fig. 1, 6 and 7, the support bracket 800 includes a mounting flange 810, a connecting tube 820, a first threading tube 830, a second threading tube 840 and a third threading tube 850.
As shown in fig. 1, 6 and 7, the left end of the connection tube 820 is connected to the mounting flange 810, and the right end of the connection tube 820 is connected to the left end of the adapter body 300. The mounting flange 810 can be connected to a side wall of the flue, thereby fixedly mounting the fly ash ammonia stripping device 1000 according to the embodiment of the present invention. At least part of the connection tube 820, as well as the adapter body 300, the heating assembly 200, and the sampling tube 100 are located within the flue. The fly ash ammonia analysis device 1000 according to the embodiment of the invention can stably collect fly ash in a flue for a long time and analyze ammonia adsorbed by the fly ash.
As shown in FIG. 1, the left ends of the first threading pipe 830, the second threading pipe 840 and the third threading pipe 850 are connected to the mounting flange 810, and the right ends of the first threading pipe 830, the second threading pipe 840 and the third threading pipe 850 are connected to the left end plate 212 of the protective shell 210.
As shown in fig. 6 and 7, the coil 230 has a wire inlet end 231 and a wire outlet end 232. The wire inlet end 231 can be threaded into the first threading tube 830 and the wire outlet end 232 can be threaded into the second threading tube 840. Therefore, the first threading tube 830 and the second threading tube 840 can protect the wire inlet end 231 and the wire outlet end 232, respectively.
The first thermocouple wire and the second thermocouple wire of the thermocouple can be simultaneously threaded into the third threading pipe 850, and the third threading pipe 850 protects the first thermocouple wire and the second thermocouple wire. The first and second purge pipes 610 and 620 are both inserted into the connection pipe 820.
One specific exemplary fly ash ammonia destruction device 1000 of the present invention is described below with reference to the drawings.
As shown in fig. 1 to 7, a fly ash ammonia desorption device 1000 according to an embodiment of the present invention includes a sampling tube 100, a heating assembly 200, an adapter 300, a filter element 400, a sample gas tube 500, a temperature measuring instrument, a first purge tube 610, a second purge tube 620, and a support frame 800.
The right end of sampling tube 100 has an inlet 110, the left end of sampling tube 100 has an outlet 120, and both inlet 110 and outlet 120 are in communication with the lumen of sampling tube 100.
The right end of the lumen of the sampling tube 100 is closed and the left end of the lumen of the sampling tube 100 is open, i.e., the left end of the lumen of the sampling tube 100 is open. The inlet 110 includes a plurality of rectangular holes provided on the outer circumferential surface of the sampling tube 100, the plurality of rectangular holes being annularly arranged around a center line of the sampling tube 100 extending in the left-right direction. The outlet 120 is an open end of the lumen of the sampling tube 100.
The heating assembly 200 includes a heating body 220, a protective case 210, a coil 230, a heat insulating layer 240, and an insulating plate 250.
The heating body 220 has a heating chamber 221, and the heating chamber 221 has left and right ends. The right end of the heating element 220 is connected to the left end of the sampling tube 100. The right end of the heating chamber 221 communicates with the outlet 120 so that the heating chamber 221 communicates with the lumen of the sampling tube 100.
The protective case 210 has a cavity in which the heating element 220 is disposed. The coil 230 is located between the inner circumferential surface of the shield case 210 and the outer circumferential surface of the heating body 220. The coil 230 is supplied with a high-frequency current to generate an alternating magnetic field that changes at a high speed, and the heating element 220 generates heat in the magnetic field. The temperature in the heating chamber 221 can reach 700-800 degrees celsius at the maximum.
The shield case 210 includes a main case 211 and left and right end plates 212 and 213 opposite in the left and right direction. The right end of the heating element 220 is connected with the left side of the right end plate 213, the left end of the heating element 220 is connected with the right side of the left end plate 212, and the right end of the adapter 300 is connected with the left side of the left end plate 212. The left end of the heating element 220 is connected with the right end of the adapter 300 through the left end plate 212.
The left end of the sampling tube 100 passes through the right end plate 213 to contact the right end of the heating element 220. The right end plate 213 and the right end of the heating element 220 are connected by a bolt. The left end of the sampling tube 100 has a flange 130, the right end plate 213 has a second through hole 2133, the second through hole 2133 is a stepped hole, and the flange 130 can be engaged with the second through hole 2133, so that the sampling tube 100 is fixed to the right end plate 213.
The right end plate 213 includes a main plate 2131 and a fastening plate 2132, the fastening plate 2132 having a generally annular cross-section. The outer peripheral surface of the fastening plate 2132 is connected to the main case 211, the inner peripheral surface of the fastening plate 2132 is connected to the outer peripheral surface of the main plate 2131, and the second penetrating hole 2133 is provided in the main plate. The main plate 2131 is connected to the right end of the heating element 220 by a bolt, and the main plate 2131 is detachably connected to the fastening plate 2132.
The heat insulating layer 240 is fitted around the outer circumferential surface of the heating element 220, and the coil 230 is located between the inner circumferential surface of the protective case 210 and the outer circumferential surface of the heat insulating layer 240.
The insulating plate 250 includes a first insulating plate 251, a second insulating plate 252, and a third insulating plate 253. The first insulating plate 251 is provided at the inner circumferential surface of the main housing 211. A second insulating plate 252 is provided inside the left end plate 212. A third insulating plate 253 is provided inside the right end plate 213.
The left end of the heating element 220 is connected with the right end of the adapter 300. A sealing gasket is arranged between the right end of the heating element 220 and the left end of the sampling tube 100. A sealing gasket is arranged between the right end of the adapter 300 and the left end plate 212.
The interposer 300 has a first channel and a second channel therein. The first channel includes a first vent 310, a second vent, and a third vent. The second channel includes a fourth vent and a fifth vent 320.
The adapter body 300 has a boss 301 at the right end, and the protective shell 210 has a first through hole 2121 at the left end plate 212. The boss 301 extends into the first penetration hole 2121. The right end face of the boss 301 has a groove, and the groove is a first transition cavity 710.
The filter cartridge 400 includes a core 410 and a filter cavity 420 surrounded by the core 410. The right end of the filter chamber 420 is closed and the left end of the filter chamber 420 is open. The right end of the filter chamber 420 extends into the heating chamber 221. The filter element is made of stainless steel.
The outer peripheral surface of the first portion 411 and the peripheral wall surface of the heating cavity 221 define a first annular cavity, the outer peripheral surface of the third portion 413 and the peripheral wall surface of the heating cavity 221 define a second annular cavity, the outer peripheral surface of the second portion 412 has an annular protrusion 430, and the outer peripheral surface of the annular protrusion 430 abuts against the peripheral wall surface of the heating cavity 221. The annular boss 430 has a through hole 431, the through hole 431 penetrates the annular boss 430 in the first direction, and the first annular chamber and the second annular chamber communicate through the through hole 431. The through hole 431 is plural, and the plural through holes 431 are annularly arranged around a center line of the annular protrusion 430 extending in the left-right direction.
One end of the first purge tube 610 is connected to the third vent, and the lumen of the first purge tube 610 communicates with the first passage. The filter chamber 420 communicates with the first vent 310 and the first passage communicates with the filter chamber 420. The other end of the first blowing pipe 610 is connected with an air blowing device.
One end of the second purging pipe 620 is connected with the fourth air port to communicate the lumen of the second purging pipe 620 with the second channel, the fifth air port 320 is communicated with the first annular cavity, and the second channel is communicated with the first annular cavity. The other end of the second purge pipe 620 is connected to a blowing device.
One end of the sample tube 500 is connected to the second vent so that the lumen of the sample tube 500 communicates with the first channel. The other end of the sample gas tube 500 is connected with a gas extraction device.
The first transition chamber 710 communicates with both the first vent 310 and the left end of the filter chamber 420 such that the first transition chamber 710, the first passage, and the filter chamber 420 communicate. The outer peripheral surface of the first portion 411 of the core 410 defines a second transition chamber 720 with the right end surface of the boss 301 and a portion of the inner wall surface of the first through hole 2121. The second transition chamber 720 communicates with the fifth vent 320 and the left end of the first annular chamber, such that the second transition chamber 720, the second passage, and the first annular chamber communicate.
The peripheral wall of the first transition chamber 710 is provided with a gasket that separates the first transition chamber 710 from the second transition chamber 720.
The temperature measuring instrument is a thermocouple, and the thermocouple is provided with a first thermocouple wire and a second thermocouple wire. The outer circumferential surface of the heating element 220 is provided with a first temperature measuring point and a second temperature measuring point. The first thermocouple wire and the second thermocouple wire are respectively connected with the first temperature measuring point and the second temperature measuring point. The thermocouple can monitor the temperature of the heating element 220, which is beneficial to controlling the heating temperature of the heating element 220.
The support bracket 800 includes a mounting flange 810, a connecting tube 820, a first threading tube 830, a second threading tube 840, and a third threading tube 850.
The left end of the connecting pipe 820 is connected to the mounting flange 810, and the right end of the connecting pipe 820 is connected to the left end of the adapter 300. The mounting flange 810 can be connected to a side wall of the flue, thereby fixedly mounting the fly ash ammonia stripping device 1000 according to the embodiment of the present invention. At least part of the connection tube 820, as well as the adapter body 300, the heating assembly 200, and the sampling tube 100 are located within the flue.
The left ends of the first threading pipe 830, the second threading pipe 840 and the third threading pipe 850 are all connected with the mounting flange 810, and the right ends of the first threading pipe 830, the second threading pipe 840 and the third threading pipe 850 are all connected with the left end plate 212 of the protective shell 210.
The first thermocouple wire and the second thermocouple wire of the thermocouple can be simultaneously threaded into the third threading pipe 850, and the third threading pipe 850 protects the first thermocouple wire and the second thermocouple wire. The first and second purge pipes 610 and 620 are both inserted into the connection pipe 820.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A fly ash ammonolysis apparatus, comprising:
the sampling tube is provided with an inlet at one end in the length direction and an outlet at the other end in the length direction, and the inlet and the outlet are both communicated with a tube cavity of the sampling tube;
the heating assembly comprises a heating body, the heating body is provided with a heating cavity, the heating cavity is provided with a first end and a second end which are opposite in a first direction, one end of the heating body in the length direction is connected with the other end of the sampling tube in the length direction, and the first end of the heating cavity is communicated with the outlet so that the heating cavity is communicated with the tube cavity of the sampling tube;
a filter element at least partially filling the second end of the heating chamber to filter the flue gas passing through the second end of the heating chamber, wherein the filter element has a filter chamber;
the heating element comprises a heating element body, a switching body and a heating element, wherein the switching body is internally provided with a first channel, the first channel comprises a first vent hole and a second vent hole, the other end of the heating element in the length direction is connected with one end of the switching body in the length direction, and the first vent hole is communicated with a filtering cavity so that the first channel is communicated with the filtering cavity; and
and one end of the sample gas pipe is connected with the second vent so as to enable the tube cavity of the sample gas pipe to be communicated with the first channel.
2. The fly ash ammonia destruction device according to claim 1, further comprising a first purge pipe, wherein the first passage further comprises a third vent, and wherein one end of the first purge pipe is connected to the third vent to communicate the lumen of the first purge pipe with the first passage.
3. A fly ash aminolysis apparatus according to claim 2, wherein the filter element comprises a core and the filter chamber bounded by the core, the filter chamber having first and second ends opposite in a first direction, the first end of the filter chamber being closed and the first end of the filter chamber extending into the heating chamber, the second end of the filter chamber being open and the second end of the filter chamber being in communication with the first air vent such that the first passage is in communication with the filter chamber.
4. A fly ash aminolysis device according to claim 3, wherein the core of the filter element comprises a first portion, a second portion and a third portion, the second portion being located between the first portion and the third portion in the first direction,
the peripheral surface of the first part and the peripheral wall surface of the heating cavity define a first annular cavity,
the peripheral surface of the third part and the peripheral wall surface of the heating cavity define a second annular cavity,
the outer peripheral surface of the second portion is provided with an annular bulge, the outer peripheral surface of the annular bulge is abutted to the peripheral wall surface of the heating cavity, the annular bulge is provided with a through hole, the through hole penetrates through the annular bulge in the first direction, and the first annular cavity is communicated with the second annular cavity through the through hole.
5. The fly ash ammonia desorption device of claim 4, further comprising a second purge tube, wherein the adapter body further comprises a second channel therein, the second channel comprises a fourth gas port and a fifth gas port, one end of the second purge tube is connected to the fourth gas port to communicate the second channel with the lumen of the second purge tube, and the fifth gas port is communicated with the first annular chamber to communicate the second channel with the first annular chamber.
6. The fly ash ammonia destruction device of claim 1, wherein the heating assembly further comprises a protective shell having a cavity and a helically wound coil, the heat generating body being disposed within the cavity, the coil being located between an inner circumferential surface of the protective shell and an outer circumferential surface of the heat generating body.
7. The fly ash ammonia analysis device according to claim 6, wherein the heating unit further comprises a heat insulating layer disposed on the outer circumferential surface of the heating element, and the coil is disposed between the inner circumferential surface of the protective shell and the outer circumferential surface of the heat insulating layer.
8. The fly ash ammonia destruction device of claim 6, wherein the heating assembly further comprises an insulation plate disposed on an inner wall surface of the containment shell.
9. The fly ash ammonia analyzing apparatus according to claim 1, further comprising a temperature measuring instrument capable of measuring the temperature of the heating element.
10. The fly ash ammonia analysis device of claim 1, further comprising a support frame, wherein the support frame comprises a mounting flange and a connecting pipe, one end of the connecting pipe in the length direction is connected with the mounting flange, and the other end of the connecting pipe in the length direction is connected with the adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011549613.2A CN112710532A (en) | 2020-12-24 | 2020-12-24 | Flying ash ammonia analytical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011549613.2A CN112710532A (en) | 2020-12-24 | 2020-12-24 | Flying ash ammonia analytical equipment |
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| CN112710532A true CN112710532A (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011549613.2A Pending CN112710532A (en) | 2020-12-24 | 2020-12-24 | Flying ash ammonia analytical equipment |
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| CN (1) | CN112710532A (en) |
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| CN205958546U (en) * | 2016-08-23 | 2017-02-15 | 深圳市量宇科技有限公司 | Sampling probe |
| CN206787850U (en) * | 2017-04-12 | 2017-12-22 | 北京新叶能源科技有限公司 | A kind of high effective flue gas samples blow device |
| CN207540841U (en) * | 2017-11-23 | 2018-06-26 | 北京华科仪科技股份有限公司 | A kind of sampling pre-processing device of chemical method the escaping of ammonia on-line analysis monitor |
| CN110133187A (en) * | 2019-04-19 | 2019-08-16 | 江苏玫克森环保科技有限公司 | A kind of online high-precision denitrating flue gas the escaping of ammonia detection system |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3802884A1 (en) * | 1988-02-01 | 1989-08-10 | Peters Ag Claudius | Plant for removing ammonia from fly ash |
| US20070193374A1 (en) * | 2004-04-01 | 2007-08-23 | Hiroshi Shimada | Method for sampling flue gas for analysis containing gas component having high susceptibility to adsorption |
| CN201569588U (en) * | 2009-12-10 | 2010-09-01 | 河北省机电一体化中试基地 | Heated smoke sampling probe easy to assemble and disassemble |
| CN104897743A (en) * | 2015-03-27 | 2015-09-09 | 北京京能电力股份有限公司石景山热电厂 | Analytic determination method for ammonia in denitration flue dust of flue gas of thermal power plant boiler |
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