CN114183737A - Contain salt and contain chloric nature flue gas waste heat recovery device of fluorine - Google Patents
Contain salt and contain chloric nature flue gas waste heat recovery device of fluorine Download PDFInfo
- Publication number
- CN114183737A CN114183737A CN202111460246.3A CN202111460246A CN114183737A CN 114183737 A CN114183737 A CN 114183737A CN 202111460246 A CN202111460246 A CN 202111460246A CN 114183737 A CN114183737 A CN 114183737A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- cooling chamber
- membrane wall
- treated
- distributor
- 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.)
- Granted
Links
- 239000003546 flue gas Substances 0.000 title claims abstract description 93
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 239000002918 waste heat Substances 0.000 title claims abstract description 41
- 150000003839 salts Chemical class 0.000 title claims abstract description 37
- 238000011084 recovery Methods 0.000 title claims abstract description 33
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 14
- 239000011737 fluorine Substances 0.000 title claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 72
- 239000012528 membrane Substances 0.000 claims abstract description 63
- 230000005855 radiation Effects 0.000 claims abstract description 51
- 239000000498 cooling water Substances 0.000 claims abstract description 24
- 239000000779 smoke Substances 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims description 12
- 230000001174 ascending effect Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- HXELGNKCCDGMMN-UHFFFAOYSA-N [F].[Cl] Chemical compound [F].[Cl] HXELGNKCCDGMMN-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002585 base Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 8
- 229910052801 chlorine Inorganic materials 0.000 description 8
- 239000000460 chlorine Substances 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 230000002378 acidificating effect Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000003517 fume Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- CDHOWLYGLQODNE-UHFFFAOYSA-N Cl(=O)(=O)O.[F] Chemical compound Cl(=O)(=O)O.[F] CDHOWLYGLQODNE-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- -1 alkali metal salt Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- XTEGARKTQYYJKE-UHFFFAOYSA-N chloric acid Chemical compound OCl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-N 0.000 description 1
- 229940005991 chloric acid Drugs 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
- F22B1/1869—Hot gas water tube boilers not provided for in F22B1/1807 - F22B1/1861
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Treating Waste Gases (AREA)
Abstract
The application discloses contain sour flue gas waste heat recovery device of salt fluorine chlorine, the device includes: the device comprises a radiation cooling chamber, a steam pocket, a pipeline and at least one distributor body, wherein the radiation cooling chamber is internally provided with a cavity with a hollow structure, and the side wall of the radiation cooling chamber is a totally-enclosed membrane wall, wherein the cavity is used for containing flue gas to be treated, and the membrane wall is used for circulating cooling water; the steam drum is connected with the membrane wall of the radiation cooling chamber through a pipeline and is used for inputting cooling water to the membrane wall and outputting steam generated after waste heat recovery; the pipeline is connected with the membrane wall, so that cooling water flows in the membrane wall; each distributor body is arranged inside the radiation cooling chamber, two ends of each distributor body are respectively connected with the membrane type wall of the radiation cooling chamber, and at least one distributor body is arranged layer by layer and used for disturbing and shunting smoke to be treated. The application solves the technical problem that the heat recovery requirement of chloric flue gas containing salt and fluorine can not be met in the prior art.
Description
Technical Field
The application belongs to the technical field of flue gas waste heat recovery, and relates to a contain salt fluorine chloric acid nature and corrode flue gas waste heat recovery device.
Background
The method is mainly characterized in that the waste liquid containing chloric acid and salt contains corrosive media due to high salt content, so that the common water treatment technology cannot effectively treat the waste liquid, the incineration method is adopted for treatment, organic matters are decomposed into non-toxic and harmless micromolecular substances through high-temperature incineration, and the heat generated by the incineration can be recycled. However, the burned flue gas contains corrosive (such as HF and HCl) media and alkali metal salt with strong adhesion, the operation environment of the waste heat recovery device is severe, and the safe operation of the waste heat recovery device is the key for ensuring the safe and stable operation of the whole burning device.
At present, when the device for recovering the waste heat of the salt-containing acid flue gas containing fluorine and chlorine generated by salt-containing acid flue gas waste heat recovery and incineration is used for recovering and treating the heat of the salt-containing acid flue gas containing fluorine and chlorine, the following difficulties mainly exist: (1) the flue gas is strong in corrosivity. The aspect of strong corrosivity refers to the existence of corrosive gas in flue gas, which is different from SO contained in the flue gas2HF and HCl in the flue gas have the characteristics of low dew point and high corrosion rate after condensation; on the other hand, corrosive molten metal exists in the flue gas, and the molten metal can corrode metals in a high-temperature molten state. (2) Strong adhesion of ash. The chloric waste liquid containing salt and fluorine contains complex metal elements due to complex sources, the smoke generated after incineration contains various metal salts, the ash taking the metal salts as the main component has the characteristic of low ash melting point, and the melting point is as low as that in a composite environment600-750 ℃, is easy to be adhered to a heated surface, and is easy to accumulate dust and slag. (3) The thermal inertia of the ash. The particle size of the metal salt ash particles contained in the flue gas is about 20 μm generally. Because the metal salt ash has thermal inertia, certain temperature difference exists between the metal salt ash and the flue gas. If the distribution of the flue gas flow field is not uniform, the temperature of the flue gas can be reduced to be lower than the ash melting point, while the ash temperature is still above the ash melting point and still has strong cohesiveness, so that the heating surface is polluted, and the heating surface can be blocked in serious cases, so that the heating surface is damaged.
Because contain at present and contain the chloric nature flue gas of salt and contain and have above-mentioned characteristic for contain salt and contain chloric nature flue gas waste heat recovery device of salt and put forward higher requirement, need can resist strong corrosivity promptly, avoid deposition and slagging scorification again, avoid blockking up the requirement such as heating surface, but present internal lack can retrieve and contain the sour flue gas heat of salt and contain fluorine chlorine, can solve the waste heat recovery device of above-mentioned problem again, how consequently to contain the sour flue gas heat of salt and contain fluorine chlorine and retrieve and become the problem of treating urgently.
Disclosure of Invention
The technical problem that this application was solved is: aiming at the problem that the heat recovery requirement of chloric flue gas containing salt and fluorine can not be met in the prior art, the application provides the device for recovering the waste heat of the acidic flue gas containing salt, fluorine and chlorine, which ensures good air tightness by setting a radiation cooling chamber of the waste heat recovery device to be a fully-closed structure, and is internally provided with a plurality of distributor bodies, so that the internal flow field of the flue gas is uniformly distributed, no local low-temperature area exists, and the problem of low-temperature dew point corrosion caused by air leakage and non-uniform flue gas is avoided; and the flue gas can fully exchange heat in the radiation cooling chamber, the temperature difference between the salt ash and the flue gas is reduced as much as possible, the salt ash is fully cooled, and the problems of blockage and corrosion of a heating surface caused by the salt ash are solved.
In a first aspect, an embodiment of the present application provides a device for recovering waste heat of acidic flue gas containing fluorine and chlorine, the device including: the device comprises a radiation cooling chamber, a steam pocket, a pipeline and at least one distributor body, wherein the radiation cooling chamber is internally provided with a cavity with a hollow structure, and the side wall of the radiation cooling chamber is a totally-enclosed membrane wall, wherein the cavity is used for containing flue gas to be treated, and the membrane wall is used for circulating cooling water; the steam drum is connected with the membrane wall of the radiation cooling chamber through the pipeline and is used for inputting cooling water to the membrane wall and outputting steam generated after waste heat recovery; the pipe is connected to the membrane wall so that the cooling water flows in the membrane wall; each distributor body is arranged in the radiation cooling chamber, two ends of each distributor body are respectively connected with the membrane type wall of the radiation cooling chamber, and at least one distributor body is arranged layer by layer and used for disturbing and shunting smoke to be treated.
Optionally, the distributor body includes a first distributor, a second distributor and a connecting sleeve, and is configured to change a flow direction of the flue gas to be treated in the cavity, so that the flue gas to be treated is uniformly distributed in the cavity; wherein one end of the first distributor is connected with the membrane wall, and the other end of the first distributor is connected with the second distributor.
Optionally, the first distributor and the second distributor each comprise: the device comprises a base, a spoiler and a pressure plate; the base is connected with the mode wall membrane type wall, at least one circular arc-shaped first through groove is formed in the surface of one side of the base, a through hole is formed in the middle position of the base, second through grooves are oppositely formed in the upper side and the lower side of the through hole, and first threaded holes are formed in the two sides of each second through groove; the upper side and the lower side of one end of the turbulence member are oppositely provided with protrusions matched with the second through grooves, so that one end of the turbulence member is inserted into the through hole, and the protrusions are connected with the second through grooves in a matched mode; the pressing plate is of a rectangular structure, second threaded holes are formed in two ends of the pressing plate, the first threaded holes are aligned with the second threaded holes, and the pressing plate is fixedly inserted into the bulges in the second through grooves through the threads.
Optionally, one end of the downcomer is connected with the steam drum, and the other end of the downcomer is connected with the membrane wall, and is used for inputting cooling water into the membrane wall, so that the cooling water in the membrane wall absorbs heat in the flue gas to be treated and then turns into steam, and the steam is collected through a header tank on the upper part of the membrane wall; one end of the ascending pipe is connected with the steam drum, the other end of the ascending pipe is connected with the membrane wall and used for outputting steam generated after waste heat recovery, wherein the steam enters the steam drum from a header at the upper part of the membrane wall through the ascending pipe, and the steam is output out of the waste heat recovery device after steam-water separation in the steam drum.
Optionally, the radiant cooling chamber comprises one or more of said cavities.
Optionally, the heating area of the radiation cooling chamber is not less than 50m2And the pollution coefficient is 0 to 0.05 (m)2H ℃/kcal) so as to allow the heat in the fumes to be treated to be absorbed uniformly by the cooling water in the membrane walls, and to maintain the cooling chamber of radiant cooling at a constant temperature, maintaining the fumes to be treated at the temperature of the gaseous state.
Optionally, the distributor body is disposed on a flow path of the flue gas to be treated to change a flow direction of the flue gas to be treated, so that the flue gas to be treated flows through a dead zone in the radiation cooling chamber to reach a state of filling the whole cavity of the radiation cooling chamber, where the dead zone is a region in the radiation cooling chamber where the flue gas to be treated cannot reach.
Compared with the prior art, the scheme provided by the embodiment of the application has at least the following beneficial effects:
in the scheme provided by the embodiment of the application, the radiation cooling chamber of the waste heat recovery device is of a fully-closed structure, so that the air tightness is good, and the distributor bodies are arranged in the waste heat recovery device, so that the flow field in the flue gas is uniformly distributed, a local low-temperature area is avoided, and the problem of low-temperature dew point corrosion caused by air leakage and non-uniform flue gas is avoided; and the flue gas can fully exchange heat in the radiation cooling chamber, the temperature difference between the salt ash and the flue gas is reduced as much as possible, the salt ash is fully cooled, and the problems of blockage and corrosion of a heating surface caused by the salt ash are solved.
Drawings
Fig. 1 is a schematic structural diagram of a device for recovering waste heat of acidic flue gas containing fluorine and chlorine and containing salt according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a distributor body according to an embodiment of the present disclosure;
fig. 3a is a schematic structural diagram of a base according to an embodiment of the present disclosure;
FIG. 3b is a schematic structural diagram of a pressing plate according to an embodiment of the present disclosure;
fig. 3c is a schematic structural diagram of a spoiler according to an embodiment of the present application;
fig. 4 is a cross-sectional view of a device for recovering waste heat of acidic flue gas containing fluorine and chlorine and containing salt according to an embodiment of the present application.
The following drawings: 1-a radiation cooling chamber; 2-steam drum; 3-pipeline; 4-distributor body; 11-a cavity; 12-membrane wall; 41-a first distributor; 42-a second distributor; 43-connecting sleeves; 44-a base; 45-a spoiler; 46-a platen; 31-a downcomer; 32-a riser; 441-a first through slot; 442-a through hole; 443-a second through slot; 444-first threaded hole; 451-protrusions; 461-second threaded hole.
Detailed Description
In the solutions provided in the embodiments of the present application, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to better understand the technical solutions, the technical solutions of the present application are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
Referring to fig. 1, the device for recovering waste heat of acidic flue gas containing fluorine and chlorine and containing salt provided by the embodiment of the application is characterized by comprising: the device comprises a radiation cooling chamber 1, a steam drum 2, a pipeline 3 and at least one distributor body 4, wherein the radiation cooling chamber 1 is internally provided with a cavity 11 with a hollow structure, the side wall of the radiation cooling chamber is a totally-enclosed membrane wall 12, the cavity 11 is used for containing flue gas to be treated, and the membrane wall 12 is used for circulating cooling water; the steam drum 2 is connected with the membrane wall 12 of the radiation cooling chamber 1 through the pipeline 3 and is used for inputting cooling water to the membrane wall 12 and outputting steam generated after waste heat recovery; the pipe 3 is connected to the membrane wall 12 so that the cooling water flows in the membrane wall 12; each distributor body 4 is arranged inside the radiation cooling chamber 1, two ends of each distributor body are respectively connected with the membrane wall 12 of the radiation cooling chamber 1, and at least one distributor body 4 is arranged layer by layer and used for disturbing and shunting flue gas to be treated.
Specifically, in the solution provided in the embodiment of the present application, the radiation cooling chamber 1 is connected to the steam drum 2 through the pipeline 3, and the radiation cooling chamber 1 is further provided with a gas input port and a gas output port (not shown in the figure), wherein the flue gas to be subjected to waste heat recovery is input through the gas input port, and the flue gas subjected to waste heat recovery is output through the gas output port.
After the flue gas of waste heat to be recovered is input into the radiation cooling chamber 1, cooling water is input into the membrane wall 12 of the radiation cooling chamber 1 through the steam drum 2, the cooling water flows through the membrane wall 12 on the outer wall and inside of the cavity 11 of the radiation cooling chamber 1, the heat of the flue gas of the waste heat to be recovered is taken away, and then the flue gas of the waste heat to be recovered is subjected to heat recovery. By way of example, the membrane wall 12 has a cylinder consisting of a plurality of pipes distributed along the circumference.
Further, in the solution provided in the embodiment of the present application, in order to make the flue gas to be subjected to waste heat recovery fully contact with the cooling water and make the heat of the flue gas to be subjected to waste heat recovery be uniformly absorbed, at least one distributor body 4 is disposed inside the radiant cooling chamber 1, and two ends of each distributor body 4 are respectively connected to the membrane wall 12 of the radiant cooling chamber 1. Since the flue gas to be used for recovering waste heat flows in the direction of the air flow in the interior of the radiant cooling chamber 1 (for example, flows along one side wall of the radiant cooling chamber 1), the flue gas near the membrane wall 12 absorbs more heat than the flue gas far from the membrane wall 12, for example, the flue gas at the edge of the radiant cooling chamber 1 absorbs more heat than the flue gas at the center of the radiant cooling chamber 1. In the scheme provided by the embodiment of the application, at least one distributor body 4 is arranged in the radiation cooling chamber 1, so that the smoke flowing along a certain airflow can avoid the distributor body 4 when encountering the distributor body 4, the flowing direction of the smoke is changed, the smoke flow field in the radiation cooling chamber 1 is more uniformly distributed, and no dead zone or low-temperature region exists. By way of example, the at least one distributor body 4 can be arranged layer by layer along the direction of flow of the fumes to be treated, each layer being able to be arranged one or more.
Further, in order to avoid corrosion to the waste heat recovery device caused by the waste heat of the flue gas to be treated becoming liquid after being recovered, the flue gas to be treated in the cooling chamber 1 cooled by radiation is always in a gas state. In order to keep the flue gas to be treated in the radiation-cooled cooling chamber 1 in a gaseous state at all times, various measures are taken in the solution provided in the embodiments of the present application, and some of them are described below as examples.
In a possible implementation, the radiant cooling chamber 1 comprises one or more of the cavities 11.
Further, in a possible realization mode, the heating area of the radiation cooling chamber 1 is not less than 50m2And the pollution coefficient is 0 to 0.05 (m)2H ℃/kcal) so as to allow the heat in the fumes to be treated to be absorbed uniformly by the cooling water in the membrane walls 12 and to maintain the radiant cooling chamber 1 at a constant temperature, maintaining the fumes to be treated at the temperature of the gaseous state.
Further, in order to avoid the existence of the area (dead zone) of the radiant cooling chamber 1 which is not reached by the flue gas to be treated, in a possible implementation manner, the distributor body 4 is arranged on the flow path of the flue gas to be treated so as to change the flow direction of the flue gas to be treated, so that the flue gas to be treated flows through the dead zone of the radiant cooling chamber 1 to reach the state of filling the whole cavity of the radiant cooling chamber 1, wherein the dead zone refers to the area of the radiant cooling chamber 1 which is not reached by the flue gas to be treated.
Specifically, in the scheme provided by the embodiment of the application, the flue gas dead zone is judged according to the flow state of the flue gas in the radiation cooling chamber 1, the distributor body 4 is added on the flow path of the flue gas for disturbance, the flow direction of the flue gas is changed, the flue gas flows through the dead zone in the radiation cooling chamber 1, and the state that the cavity of the whole radiation cooling chamber 1 is filled with the flue gas is achieved. The number and the position of the distributor bodies 4 are determined according to the software simulation state, the number is N, and N is an integer. The structure and function of the distributor body 4 will be briefly described below for the sake of understanding.
Referring to fig. 2, a schematic structural diagram of a distributor body according to an embodiment of the present disclosure is shown. In fig. 2, the distributor body 4 includes a first distributor 41, a second distributor 42 and a connecting sleeve 43, which are used for changing the flow direction of the flue gas to be treated in the cavity 11, so that the flue gas to be treated is uniformly distributed in the cavity 11; wherein the first distributor 41 is connected to the membrane wall 12 at one end and to the second distributor 42 at the other end.
Further, in a possible implementation manner, the first distributor 41 and the second distributor 42 each include: a base 44, a spoiler 45, and a pressure plate 46; wherein the content of the first and second substances,
the base 44 is connected to the diaphragm wall 12, and has at least one circular arc-shaped first through groove 441 formed in one surface thereof, a through hole 442 formed in a middle position thereof, second through grooves 443 formed on upper and lower sides of the through hole 442, and first screw holes 444 formed in both sides of the second through grooves 443;
the upper side and the lower side of one end of the spoiler 45 are oppositely provided with protrusions 451 matched with the second through grooves 443, so that one end of the spoiler 45 is inserted into the through hole 442, and the protrusions 451 are matched and connected with the second through grooves 443;
the pressing plate 46, which is a rectangular structure, has two ends provided with second threaded holes 461, for aligning the first threaded holes 444 with the second threaded holes 461, and fixing the pressing plate 46 to the protrusions 451 inserted into the second through slots 443 through the threads.
Specifically, in the solution provided in the embodiment of the present application, the base 44 of the first distributor 41 is welded to the membrane wall 12 on the side of the radiant cooling chamber 1, and one end of the spoiler 45 is connected to the base 44. The spoiler 45 is fixed to the base 44 by the pressing plate 46 through bolts.
The second distributor body 42 is installed on the membrane wall 12 on the other side of the radiant cooling chamber 1 in the same manner, the connecting sleeve 43 connects the first distributor 41 and the turbulence members 45 on the second distributor 42 together, and the turbulence members 45 on the two sides are connected together with the through holes in the corresponding positions on the connecting sleeve 13 through the stud bolts. By way of example, the connecting sleeve 43 is a hollow circular tube structure, and the two end tubes are provided with through holes which are coaxial up and down.
Referring to fig. 3a, a schematic structural diagram of a base provided in an embodiment of the present application is shown. In fig. 3, the base 44 has a first circular-arc through groove 441 on one side, a circular through hole 442 in the middle, two second through grooves 443 on the upper and lower sides of the through hole 442, and first screw holes 444 are formed on both sides of the surface of each second through groove 443, for example, the second through grooves 443 are rectangular.
Referring to fig. 3b, in order to provide a schematic structural diagram of a pressure plate according to an embodiment of the present application, in fig. 3c, second threaded holes 461 are respectively disposed at two ends of the pressure plate.
Referring to fig. 3c, a schematic structural diagram of a spoiler according to an embodiment of the present application is shown. For example, referring to fig. 3c, the spoiler 45 is a hollow circular tube, one end of the circular tube has a protrusion 451 (e.g., a rectangular block) on the top and bottom, the circular tube is provided with a plate having a rectangular structure along the length direction, the plate can change the installation position according to the requirement of smoke distribution, and the other end of the circular tube is provided with a through hole which is coaxial with the top and bottom. The spoiler 45 inserts the end with the rectangular block into the rectangular through slot of the base 44 designed to fit therein. The pressing plate 46 fixes the spoiler 45 to the base 44 by means of bolts, and the pressing plate 46 has a rectangular structure with through holes formed at both sides, for example.
Further, referring to fig. 4, a cross-sectional view of a device for recovering the residual heat of the acidic flue gas containing salt, fluorine and chlorine is provided for the embodiment of the present application. In fig. 4, the pipeline 3 includes a downcomer 31 and an upcomer 32, wherein the downcomer 31 is connected to the steam drum 2 at one end and connected to the membrane wall 12 at the other end, and is used for inputting cooling water into the membrane wall 12, so that the cooling water in the membrane wall 12 absorbs heat in the flue gas to be treated, turns into steam, and is collected through a header tank at the upper part of the membrane wall 12; one end of the ascending pipe 32 is connected with the steam drum 2, and the other end of the ascending pipe is connected with the membrane wall 12 and used for outputting steam generated after waste heat recovery, wherein the steam enters the steam drum 2 through the ascending pipe 32 from a header at the upper part of the membrane wall 12, and the steam is output to the outside of the waste heat recovery device after steam-water separation in the steam drum 2.
In the scheme provided by the embodiment of the application, the radiation cooling chamber of the waste heat recovery device is of a fully-closed structure, the air tightness is good, and the distributor bodies 4 are arranged in the radiation cooling chamber, so that the flow field in the flue gas is uniformly distributed, a local low-temperature area is avoided, and the problem of low-temperature dew point corrosion caused by air leakage and non-uniform flue gas is avoided; and the flue gas can fully exchange heat in the radiation cooling chamber, the temperature difference between the salt ash and the flue gas is reduced as much as possible, the salt ash is fully cooled, and the problems of blockage and corrosion of a heating surface caused by the salt ash are solved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (7)
1. The utility model provides a contain sour flue gas waste heat recovery device of salt fluorine, its characterized in that includes: a radiant cooling chamber (1), a steam drum (2), a pipeline (3) and at least one distributor body (4), wherein,
the radiation cooling chamber (1) is internally provided with a cavity (11) with a hollow structure, and the side wall of the radiation cooling chamber is a totally-enclosed membrane wall (12), wherein the cavity (11) is used for containing flue gas to be treated, and the membrane wall (12) is used for circulating cooling water;
the steam drum (2) is connected with a membrane wall (12) of the radiation cooling chamber (1) through the pipeline (3) and is used for inputting cooling water to the membrane wall (12) and outputting steam generated after waste heat recovery;
the pipe (3) is connected to the membrane wall (12) such that the cooling water flows in the membrane wall (12);
each distributor body (4) is arranged inside the radiation cooling chamber (1), two ends of each distributor body are respectively connected with the membrane type wall (12) of the radiation cooling chamber (1), and at least one distributor body (4) is arranged layer by layer and used for disturbing and shunting smoke to be treated.
2. The device according to claim 1, characterized in that the distributor body (4) comprises a first distributor (41), a second distributor (42) and a connecting sleeve (43) for changing the flow direction of the flue gas to be treated in the cavity (11) so as to make the flue gas to be treated uniformly distributed in the cavity (11); wherein the first distributor (41) is connected at one end to the membrane wall (12) and at the other end to the second distributor (42).
3. The apparatus according to claim 2, wherein the first distributor (41) and the second distributor (42) each comprise: a base (44), a spoiler (45), and a pressure plate (46); wherein the content of the first and second substances,
the base (44) is connected with the membrane wall (12), at least one circular arc-shaped first through groove (441) is formed in one side surface, a through hole (442) is formed in the middle position of the base, second through grooves (443) are oppositely formed in the upper side and the lower side of the through hole (442), and first threaded holes (444) are formed in the two sides of the second through grooves (443);
the upper side and the lower side of one end of the flow disturbing piece (45) are oppositely provided with protrusions (451) matched with the second through grooves (443), so that one end of the flow disturbing piece (45) is inserted into the through hole (442), and the protrusions (451) are matched and connected with the second through grooves (443);
the pressing plate (46) is of a rectangular structure, and two ends of the pressing plate are provided with second threaded holes (461) for aligning the first threaded holes (444) with the second threaded holes (461) and fixing the pressing plate (46) to a protrusion (451) inserted into the second through groove (443) through the threads.
4. The apparatus according to any of claims 1 to 3, wherein the conduit (3) comprises a downcomer (31) and a riser (32), wherein,
the downcomer (31) is connected with the steam drum (2) at one end and connected with the membrane wall (12) at the other end, and is used for inputting cooling water into the membrane wall (12), so that the cooling water in the membrane wall (12) absorbs heat in the flue gas to be treated, then turns into steam and is collected through a header at the upper part of the membrane wall (12);
one end of the ascending pipe (32) is connected with the steam drum (2), the other end of the ascending pipe is connected with the membrane wall (12) and used for outputting steam generated after waste heat recovery, wherein the steam enters the steam drum (2) from a header at the upper part of the membrane wall (12) through the ascending pipe (32), and the steam is output to the outside of the waste heat recovery device after steam-water separation in the steam drum (2).
5. An apparatus according to any one of claims 1 to 3, characterized in that the radiation cooling chamber (1) comprises one or more of said cavities (11).
6. The apparatus according to any of claims 1 to 3, characterized in that the radiant cooling chamber (1) has a heated area of not less than 50m2And the pollution coefficient is 0 to 0.05 (m)2H ℃/kcal) so as to make the heat in the flue gas to be treated uniformly absorbed by the cooling water in the membrane wall (12) and to maintain the radiant cooling chamber (1) at a constant temperature, maintaining the temperature of the flue gas to be treated in a gaseous state.
7. The device according to any one of claims 1 to 3, characterized in that the distributor body (4) is arranged on the flow path of the flue gas to be treated so as to change the flow direction of the flue gas to be treated, so that the flue gas to be treated flows through the dead space in the radiation cooling chamber (1) to the state of filling the whole cavity of the radiation cooling chamber (1), wherein the dead space is the area in the radiation cooling chamber (1) where the flue gas to be treated can not reach.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111460246.3A CN114183737B (en) | 2021-12-02 | 2021-12-02 | Device for recovering waste heat of salt-containing fluorine-containing chloric acid flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111460246.3A CN114183737B (en) | 2021-12-02 | 2021-12-02 | Device for recovering waste heat of salt-containing fluorine-containing chloric acid flue gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183737A true CN114183737A (en) | 2022-03-15 |
| CN114183737B CN114183737B (en) | 2024-03-26 |
Family
ID=80603266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111460246.3A Active CN114183737B (en) | 2021-12-02 | 2021-12-02 | Device for recovering waste heat of salt-containing fluorine-containing chloric acid flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114183737B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201000072Y (en) * | 2007-01-16 | 2008-01-02 | 郑州锅炉有限责任公司 | Exhaust-heating boiler of dangerous castoff incineration furnace |
| JP2008025928A (en) * | 2006-07-21 | 2008-02-07 | Nippon Steel Engineering Co Ltd | Boiler with built-in gas cooling chamber |
| US20080041572A1 (en) * | 2006-08-15 | 2008-02-21 | The Babcock & Wilcox Company | Compact radial platen arrangement for radiant syngas cooler |
| CN102243025A (en) * | 2011-06-20 | 2011-11-16 | 北京中冶设备研究设计总院有限公司 | Process and device for recycling flue gas afterheat of electric furnace |
| CN204573974U (en) * | 2015-03-03 | 2015-08-19 | 西南交通大学 | A kind of waste heat boiler with Novel radiation cell structure |
| CN107058673A (en) * | 2017-02-15 | 2017-08-18 | 中冶南方工程技术有限公司 | A kind of converter gas waste heat safety recovery system and method |
| CN212688113U (en) * | 2020-04-05 | 2021-03-12 | 上海泰普星坦新材料有限公司 | Reducing gas heating furnace for producing sponge iron by gas-based reduction |
-
2021
- 2021-12-02 CN CN202111460246.3A patent/CN114183737B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008025928A (en) * | 2006-07-21 | 2008-02-07 | Nippon Steel Engineering Co Ltd | Boiler with built-in gas cooling chamber |
| US20080041572A1 (en) * | 2006-08-15 | 2008-02-21 | The Babcock & Wilcox Company | Compact radial platen arrangement for radiant syngas cooler |
| CN201000072Y (en) * | 2007-01-16 | 2008-01-02 | 郑州锅炉有限责任公司 | Exhaust-heating boiler of dangerous castoff incineration furnace |
| CN102243025A (en) * | 2011-06-20 | 2011-11-16 | 北京中冶设备研究设计总院有限公司 | Process and device for recycling flue gas afterheat of electric furnace |
| CN204573974U (en) * | 2015-03-03 | 2015-08-19 | 西南交通大学 | A kind of waste heat boiler with Novel radiation cell structure |
| CN107058673A (en) * | 2017-02-15 | 2017-08-18 | 中冶南方工程技术有限公司 | A kind of converter gas waste heat safety recovery system and method |
| CN212688113U (en) * | 2020-04-05 | 2021-03-12 | 上海泰普星坦新材料有限公司 | Reducing gas heating furnace for producing sponge iron by gas-based reduction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114183737B (en) | 2024-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103307910B (en) | Anti-corrosion and dirt-resistant efficient flue gas waste heat recovery device | |
| CN106017154B (en) | A kind of heat transmission equipment for flue gas desulfurization | |
| JP6255011B2 (en) | Heat transfer tube in fluidized bed boiler and fluidized bed boiler | |
| CN200993379Y (en) | Membrane type smoke cover structure | |
| CN102384680A (en) | Device for recovering and utilizing waste heat generated by smoke discharging in split type heating medium circulating way | |
| JPH07506877A (en) | Method and apparatus for improving the safety of treated liquid recovery boilers | |
| CN203464803U (en) | Anti-corrosion anti-scale high-efficiency flue gas waste heat recovery device | |
| FI98937C (en) | Method and apparatus for recovering heat in a waste liquor recovery boiler | |
| CN201407634Y (en) | Heat recovery boiler with soot deposit prevention and corrosion-resistant structure | |
| CN114183737A (en) | Contain salt and contain chloric nature flue gas waste heat recovery device of fluorine | |
| CN206818022U (en) | A kind of energy-saving appliance | |
| CN205482504U (en) | But fluoroplastics tubular heat exchanger structure that level was placed | |
| CN104315872B (en) | Boiler flue gas waste heat recycling and energy-saving device with boiler flue gas dust removing effect | |
| CA2924692C (en) | Thermal device, its use, and method for heating a heat transfer medium | |
| CN208222820U (en) | A kind of Novel asymmetric flag facial canal structure boiler | |
| JP6645938B2 (en) | Exhaust gas heat recovery system | |
| CN105737136A (en) | U-shaped pipe superheater | |
| CN205151799U (en) | A device that is used for titanium white powder calcining kiln kiln tail residual heat from flue gas | |
| CN206751748U (en) | Radiation waste-heat boiler | |
| CN110630995A (en) | Positive pressure horizontal water pipe waste heat boiler | |
| CN210070689U (en) | Composite phase change heat exchanger | |
| CN103884196A (en) | Smoke waste heat exchanger and recovery device | |
| CN211625188U (en) | Waste heat boiler for recovering heat of corrosive process gas containing halogen and salt | |
| CN219473673U (en) | Waste heat recovery device based on CEB heat pipe | |
| CN214370346U (en) | Energy-saving efficient heat exchange air preheater for boiler |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |