CN109595568B - High-purity waste ammonia gas incinerator, system and process - Google Patents
High-purity waste ammonia gas incinerator, system and process Download PDFInfo
- Publication number
- CN109595568B CN109595568B CN201811507439.8A CN201811507439A CN109595568B CN 109595568 B CN109595568 B CN 109595568B CN 201811507439 A CN201811507439 A CN 201811507439A CN 109595568 B CN109595568 B CN 109595568B
- Authority
- CN
- China
- Prior art keywords
- air
- ammonia gas
- air inlet
- control valve
- combustion
- 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.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses a high-purity waste ammonia gas incineration system which comprises a high-purity waste ammonia gas incinerator, a combustion device, an ammonia gas pipeline, a combustion-supporting air pipeline, a fuel pipeline, a heat exchange device, a smoke exhaust fan and a control device, wherein the high-purity waste ammonia gas incinerator comprises a furnace body, a first air inlet distribution device, a second air inlet distribution device and a fire-blocking wall; the first air inlet distribution device is connected with an ammonia pipeline through an ammonia pipeline interface, and the second air inlet distribution device is connected with a combustion-supporting air pipeline through an air supplementing opening; when fuel generates flame in the hearth through the flame burner of the combustion device, the introduced ammonia gas is distributed at the outer edge of the flame through the first gas inlet distribution device to be fully combusted, and the introduced combustion-supporting air is axially sprayed through the second gas inlet distribution device to form a gas wall at the periphery of the flame. Further, a corresponding high-purity waste ammonia gas incinerator and an incineration process are also disclosed. The invention can ensure that the high-purity waste ammonia gas is completely combusted and the generation of nitrogen oxides can be controlled in the thermal incineration process.
Description
Technical Field
The invention belongs to the field of incineration equipment, and particularly relates to an incinerator, a system and a process for treating waste ammonia in a high-purity ammonia production process.
Background
High-purity ammonia is an important chemical basic material and is widely applied to research and production in the industries of electronics, chemical engineering, metallurgy, energy sources and the like. The purity of the electronic grade high-purity ammonia is required to reach 99.9999 percent (volume fraction).
High purity ammonia results in 99.9% (volume fraction) waste ammonia of higher purity during the production process due to incomplete separation of impurities. Since ammonia gas is a harmful gas and cannot be directly discharged, it needs to be treated and then discharged. At present, the number of the current day,the processing methods usually adopted mainly include: 1) the gas is discharged to an absorption tower to be absorbed by water and processed into ammonia water, but the recovery value is not high due to the complex process, higher equipment investment cost, low price of the ammonia water and the like; 2) the ammonia gas is completely combusted into harmless N by adopting an incineration method2And H2O is then discharged, but the ignition point of ammonia is 651 ℃, the combustion temperature is low, the ammonia is not completely combusted, the combustion temperature is too high, and excessive nitrogen oxides are generated in the combustion process. Therefore, it has been a difficult problem how to control the furnace temperature so that the nitrogen oxide emission is not over-standard and the ammonia gas is completely decomposed.
Chinese patent CN 207422241U proposes an ammonia-containing waste gas incinerator, but it is only suitable for waste gas incineration containing a small amount of ammonia, and is not suitable for ammonia incineration with high purity, the furnace temperature is as high as 1000-1300 ℃, and the exhaust gas temperature is reduced to 250 ℃ by adding a large amount of air, which will bring about great energy waste, and only the concentration of nitrogen oxides in the tail gas is reduced by air dilution, the problem that nitrogen oxides exceed standards is not solved at all.
Disclosure of Invention
In order to solve the problems, the invention discloses an incinerator, an incineration system and an incineration process which are specially used for high-purity ammonia gas treatment, and the incinerator, the incineration system and the incineration process can enable the high-purity waste ammonia gas to be completely combusted and control the generation of nitrogen oxides by improving the air inlet mode of the high-purity waste ammonia gas and combustion-supporting air in the thermal incineration process.
The technical scheme of the invention is as follows:
the first scheme is as follows: a high-purity waste ammonia gas incinerator comprises a furnace body, a burner interface, an air supplementing opening, an ammonia gas pipeline interface, a smoke outlet, a first air inlet distribution device, a second air inlet distribution device and a fire barrier, wherein the burner interface, the air supplementing opening, the ammonia gas pipeline interface and the smoke outlet are arranged on the furnace body; the first air inlet distribution device is connected with an ammonia pipeline through an ammonia pipeline interface, and the second air inlet distribution device is connected with a combustion-supporting air pipeline through an air supplementing opening; when a flame burner connected to the combustion device generates flame in the hearth, ammonia introduced by the ammonia pipeline is distributed at the outer edge of the flame through the first air inlet distribution device to be fully combusted, and combustion-supporting air introduced by the combustion-supporting air pipeline is axially sprayed through the second air inlet distribution device to form an air wall at the periphery of the flame.
Preferably, the first air inlet distribution device comprises a main air collecting pipe connected with an ammonia pipeline interface and a plurality of ammonia distribution units which are connected with the main air collecting pipe and are distributed along the circumferential direction of the inner wall of the furnace body; the ammonia gas distribution unit comprises a branch gas collecting pipe and a plurality of ammonia gas injection pipes connected with the branch gas collecting pipe, the injection direction of each ammonia gas injection pipe is over against the flame, and the tail end connecting line is matched with the outer edge contour line of the flame in the axial direction corresponding to the tail end connecting line. The anastomosis here is mainly represented by a similar shape and a comparable length.
Preferably, the second air inlet distribution device is constructed in a hollow structure and has an air inlet connected with the air supply opening and a plurality of combustion air injection holes distributed circumferentially.
Preferably, the second air inlet distribution device is further provided with a central through hole for penetrating the flame burner, and the combustion-supporting air injection holes are circumferentially and uniformly distributed by taking the central through hole as a center.
Scheme II: a high-purity waste ammonia gas incineration system is characterized by comprising a combustion device, an ammonia gas pipeline, a combustion-supporting air pipeline, a fuel pipeline, a heat exchange device, a smoke exhaust fan, a control device and the high-purity waste ammonia gas incinerator according to the first scheme; the flame burner of the combustion device is a pilot burner and is connected with a burner interface of the high-purity waste ammonia gas incinerator; the fuel pipeline is connected with a feed inlet of the combustion device; an inlet of a hot side channel of the heat exchange device is connected with a flue gas outlet of the high-purity waste ammonia gas incinerator, an outlet of the hot side channel is connected with a smoke exhaust fan, and a cold side channel is externally connected with a cold medium; the ammonia pipeline is provided with a first air inlet control valve; the combustion-supporting air pipeline is provided with an air supplementing fan and a second air inlet control valve; the fuel pipeline is provided with a third air inlet control valve; the control device controls the air supply fan, the smoke exhaust fan, the second air inlet control valve and the differential pressure detection device in an interlocking manner so as to realize pressure regulation in the high-purity waste ammonia gas incinerator; the control device controls the first air inlet control valve, the second air inlet control valve, the third air inlet control valve and the temperature detection device in an interlocking manner to adjust the temperature in the high-purity waste ammonia gas incinerator.
Preferably, the heat exchange device is a finned tube heat exchanger.
Preferably, the smoke exhaust fan and the air supplement fan are controlled by frequency conversion.
The third scheme is as follows: the high-purity waste ammonia gas incineration process is based on the scheme II, and the high-purity waste ammonia gas incineration system comprises the following steps:
opening a second air inlet control valve, an air supplementing fan and a smoke exhaust fan to introduce air into the hearth, and purging the inside of the hearth to remove ammonia gas accumulated in the hearth;
the air quantity of the two air supplementing fans and the air quantity of the smoke exhaust fan are adjusted by interlocking control of the air supplementing fans, the smoke exhaust fan, the second air inlet control valve and the differential pressure detection device, and negative pressure operation in the hearth is maintained;
starting a combustion device, opening a third air inlet control valve, introducing fuel and igniting to form flame in a hearth, continuously raising the temperature in the hearth, observing the temperature monitored by a temperature detection device, and introducing a cold medium into a cold side channel of a heat exchange device when the temperature in the hearth reaches 500 ℃;
observing the temperature monitored by the temperature detection device, opening a first air inlet control valve to introduce high-purity waste ammonia gas when the temperature in the hearth reaches 800 ℃, and distributing the high-purity waste ammonia gas at the outer edge of the flame through a first air inlet distribution device and fully combusting the high-purity waste ammonia gas;
the air supply quantity is adjusted through a second air inlet control valve, combustion-supporting air is sprayed on the periphery of the flame through a second air inlet distribution device to form an air wall, oxygen is supplemented for ammonia combustion, and a local high-temperature area is limited within the air wall;
the first air inlet control valve, the second air inlet control valve, the third air inlet control valve and the temperature detection device are controlled in an interlocking manner through the control device, and the temperature of the hearth is maintained to be 950 +/-30 ℃;
in the combustion process, the incompletely decomposed ammonia gas is fully decomposed by a fire wall;
the decomposed high-temperature flue gas enters a hot side channel of the heat exchange device through a flue gas outlet, and a cold medium introduced into a cold side channel of the heat exchange device is heated to realize waste heat utilization;
and the flue gas cooled by the heat exchange device enters a chimney through a smoke exhaust fan and is finally discharged to the atmosphere.
And the scheme is as follows: a high-purity waste ammonia gas incineration system comprises a combustion device, a combustion-supporting air pipeline, an ammonia gas pipeline, a fuel pipeline, a control device and the high-purity waste ammonia gas incinerator according to the scheme I; the combustion device is connected with a burner interface of the high-purity waste ammonia gas incinerator; the flue gas outlet of the high-purity waste ammonia gas incinerator is connected with an external chimney through a pipeline; the ammonia pipeline is provided with a first air inlet control valve; the combustion-supporting air pipeline is provided with an air supplementing fan and a second air inlet control valve; the fuel pipeline is provided with a third air inlet control valve; the control device controls the smoke exhaust fan, the second air inlet control valve and the differential pressure detection device in an interlocking manner, so that negative pressure operation in the high-purity waste ammonia gas incinerator is realized; the control device controls the first fuel inlet control valve, the second fuel inlet control valve, the third fuel inlet control valve and the temperature detection device in an interlocking manner to adjust the temperature in the high-purity waste ammonia gas incinerator.
And a fifth scheme: the high-purity waste ammonia gas incineration process is based on the scheme IV, and the high-purity waste ammonia gas incineration system comprises the following steps:
opening a second air inlet control valve, an air supplementing fan and a smoke exhaust fan to introduce air into the hearth, and purging the inside of the hearth to remove ammonia gas accumulated in the hearth;
the air quantity of the two air supplementing fans and the air quantity of the smoke exhaust fan are adjusted by interlocking control of the air supplementing fans, the smoke exhaust fan, the second air inlet control valve and the differential pressure detection device, and negative pressure operation in the hearth is maintained;
starting a combustion device, opening a third air inlet control valve, introducing fuel and igniting to form flame in the hearth, and continuously increasing the temperature in the hearth;
when the temperature detection device detects that the temperature in the hearth reaches 800 ℃, opening a first air inlet control valve to introduce high-purity waste ammonia gas, and distributing the high-purity waste ammonia gas at the outer edge of the flame through a first air inlet distribution device and fully combusting the high-purity waste ammonia gas;
the air supply quantity is adjusted through a second air inlet control valve, combustion-supporting air is sprayed on the periphery of the flame through a second air inlet distribution device to form an air wall, oxygen is supplemented for ammonia combustion, and a local high-temperature area is limited within the air wall;
the first air inlet control valve, the second air inlet control valve, the third air inlet control valve and the temperature detection device are controlled in an interlocking manner through the control device, and the temperature of the hearth is maintained to be 950 +/-30 ℃;
in the combustion process, the incompletely decomposed ammonia gas is fully decomposed by a fire wall;
and discharging the decomposed high-temperature flue gas to the atmosphere through a chimney.
Has the advantages that:
1) through ammonia distribution device and the cooperation use of the distribution device that admits air of making up the wind, ammonia lets in to burn burning furnace and distributes in the burning of flame outer fringe through ammonia distribution device effect, make the partial concentrated flame outer fringe of burning, combustion-supporting air admits air the distribution device through making up the wind and evenly sprays at the flame periphery, provide sufficient oxygen for the burning, and the gas wall that forms limits local high temperature within the gas wall, when guaranteeing the abundant burning of ammonia, make the regional effective reduction of local high temperature in the furnace, thereby reduce NOXAnd (4) generating.
2) A fire wall with a high-temperature-resistant heat accumulator structure is arranged at the rear part of the furnace body, so that the furnace temperature is kept stable and NH which is completely combusted is not generated3The molecule also can burn through keeping off the fire wall, in addition, can also effectively block that flame from stretching the burning to the furnace body exhanst gas outlet outside, avoids conflagration potential safety hazard. Furthermore, set up temperature-detecting device and differential pressure detection device behind the fire wall, temperature and pressure in the real-time accurate monitoring furnace to avoid with burning flame direct contact, extension detection device's life.
3) The middle section of the incinerator is designed to be similar to a Venturi structure, so that two air flows of flue gas and combustion air are mixed more uniformly, and the residual ammonia gas flowing through the rear-section fire-blocking wall is ensuredTo be burnt completely, further effectively reduce the local high-temperature area in the hearth and reduce NOXAnd (4) generating.
4) The pressure measuring points are arranged in the furnace body, and the differential pressure detection device is arranged, so that negative pressure in the furnace can be set through the interlocking control of the air supplementing fan, the smoke exhaust fan, the air supplementing and air inlet control valve and the differential pressure detection device, on one hand, the air supplementing door is ensured to be in an air suction state after being opened, and the operation safety is ensured; on the other hand, the negative pressure is interlocked with the smoke exhaust fan, so that energy is saved. Through setting temperature measuring points in the furnace body and equipping the temperature detection device, when burning, the furnace temperature can be set to 950 +/-30 ℃ by performing interlocking control on the fuel air inlet control valve, the air supplementing air inlet control valve, the ammonia air inlet control valve and the temperature detection device, so that the problems that the amount of nitrogen oxide generated due to overhigh furnace temperature is large, the smoke emission does not reach the standard, and the ammonia gas is insufficiently burnt due to overlow furnace temperature are avoided.
5) The control valve, the fan and the detection device of the incineration system are connected with the control device, so that full-automatic interlocking control is realized, the control is accurate, and the operation is safe and stable. In the burning system, the burner of the burning device is provided with the pilot burner, so that the safety in the furnace is ensured; the heat exchanger is in a tube fin type, and is suitable for heating a liquid medium through flue gas in an ammonia gas manufacturing process; the air supplementing fan and the smoke exhaust fan are controlled in a frequency conversion mode, the air quantity of the fans can be changed according to working condition requirements, and energy conservation can be achieved.
Drawings
FIG. 1 is a schematic view of a high purity waste gas incinerator according to the embodiment;
FIG. 2 is a schematic configuration diagram of a high purity off-gas incineration system described in the example;
FIG. 3 is a schematic structural diagram of an embodiment of the air supply and intake distributor;
FIG. 4 is a schematic structural view of an ammonia gas feed distribution unit according to an embodiment;
FIG. 5 is a sectional view of an ammonia gas feed distributor according to an embodiment;
FIG. 6 is an AA sectional view of a high purity waste gas incinerator according to the embodiment;
FIG. 7 is a schematic view of the combustion principle in the embodiment;
reference is made to the accompanying drawings in which: the device comprises a burner interface 1, an air supplement port 2, an ammonia pipeline interface 3, a furnace body 4, a furnace body front section 41, a furnace body middle section 42, a furnace body rear section 43, a contraction section 421, a diffusion section 422, a throat 423, a temperature transmitter interface 5, a lifting lug 6, a differential pressure transmitter interface 7, a flue gas outlet 8, a saddle-type support 9, an incinerator 10, a burner 11, an air supplement and air inlet distributor 12, an ammonia inlet distributor 13, a fuel inlet control valve 14, an air supplement and air inlet control valve 15, an ammonia inlet control valve 16, an air supplement fan 17, a fire wall 18, a temperature transmitter 19, a differential pressure transmitter 20, a finned tube heat exchanger 21, a smoke exhaust fan 22, a flame burner 23, a central through hole 24, a combustion-supporting air jet hole 25, an air inlet 26, a main air collecting tube 27, a branch air collecting tube.
Detailed Description
The invention provides a high-purity waste ammonia gas incinerator and an incineration system adopting the same, wherein a high-purity waste ammonia gas incineration device is a high-purity waste ammonia gas incinerator with a special structure, the high-purity waste ammonia gas incinerator is of an approximately hollow tubular structure with end plates at two ends, the outer wall of the high-purity waste ammonia gas incinerator is a shell body rolled by steel plates, and the inner wall of the high-purity waste ammonia gas incinerator is provided with a fireproof heat-insulating lining. The furnace body of the high-purity waste ammonia gas incinerator is constructed into three sections, namely a front section, a middle section and a rear section, the front section of the furnace body is provided with a burner interface, an air supplementing opening, an ammonia gas interface, an air supplementing and air inlet distribution device and an ammonia gas inlet distribution device, and the rear section of the furnace body is provided with a smoke outlet. Further, the rear section of the furnace body (namely, the section close to the smoke outlet) of the high-purity waste ammonia gas incinerator is also provided with a fire wall, and the middle section of the furnace body is also constructed into a structure similar to a Venturi structure. Further, the device also comprises a pressure detection device and a temperature detection device. The high-purity waste ammonia gas incineration system mainly comprises a combustion device, a high-purity waste ammonia gas incinerator, a finned tube heat exchanger and a smoke exhaust fan, wherein the combustion device is connected with a burner interface at the front end of the high-purity waste ammonia gas incinerator, the finned tube heat exchanger is connected with a smoke outlet at the other end of the high-purity waste ammonia gas incinerator, and the smoke exhaust fan is connected with a smoke exhaust outlet of the finned tube heat exchanger. When the high-purity waste ammonia incinerator is used, the temperature and the pressure in the hearth can be monitored, the input quantity of waste ammonia, combustion air and fuel can be controlled, the high-purity waste ammonia is safely operated, the high-purity waste ammonia is burnt out, and the tail gas is guaranteed to be discharged up to the standard.
NO produced during ammonia combustionXThe method is mainly divided into three categories: fuel type (fuel NO)X) Thermal type (thermolNO)X) And transient type (prompt NO)X) Wherein, thermal type NOXIs generated by oxidizing nitrogen in air at high temperature in the combustion process. According to thermal type NOXThe mechanism of formation of (2): the higher the temperature, NOXThe more the amount of production; an increase in air content (i.e. an increase in the combustion ratio) will on the one hand reduce the combustion temperature, but will also increase the oxygen content and eventually NOXThe amount of production of (2) is increased; the presence of localized high temperature regions can result in NOXIs greatly increased. Therefore, the proper combustion-supporting ratio is selected, the reasonable combustion temperature is controlled, and the NO reduction is realized by avoiding the existence of a local high-temperature area as much as possibleXThe amount of production is critical. According to long-term engineering experience and research, the proper combustion-supporting ratio is adjusted, and the combustion temperature of the ammonia gas is controlled to be about 950 ℃ most reasonably.
According to the flame temperature gradient distribution principle, the outermost edge of the flame is a region with the highest flame temperature; in addition, the combustion of ammonia gas itself generates a great deal of heat, so that the combustion area has local high temperature. Therefore, the design of introducing ammonia gas into the flame edge for combustion, leading local high temperature to be concentrated around the flame, and cooling the outermost edge of the flame by using air is effective in reducing NOXA way of generating.
The present invention will be described in detail with reference to the following examples and accompanying drawings.
As shown in fig. 1, embodiment 1 discloses a high-purity waste ammonia gas incinerator (hereinafter referred to as incinerator), which is a hollow tubular structure with end plates at two ends, and mainly comprises a furnace body 4, a burner interface 1, an air supply port 2, an ammonia gas pipeline interface 3, a temperature transmitter interface 5, a differential pressure transmitter interface 7 and a flue gas outlet 8 which are arranged on the furnace body 4, an air supply and air inlet distributor 12 and an ammonia gas inlet distributor 13 which are arranged inside the furnace body 4, and a lifting lug 6 and a saddle-type support 9 which are used for supporting and supporting the furnace body 4. The furnace 4 is constructed as a furnace front section 41, a furnace middle section 42, and a furnace rear section 43. Combustor interface 1 arranges the end plate department at furnace body anterior segment 41, and supply air inlet 2 and ammonia pipeline interface 3 arrange on the oven of furnace body anterior segment 41, and the end plate department of furnace body back end 43 is arranged to exhanst gas outlet 8, and temperature transmitter interface 5 and differential pressure transmitter interface 7 can arrange at furnace body anterior segment 41, middle section 42 or back end 43 according to the demand. The outer wall of the incinerator is a shell made of steel plates in a rolling mode, the inner wall of the hearth is provided with a fireproof heat insulation lining, the heat insulation material is mainly made of casting materials, and the heat insulation thickness is about 250 mm.
Wherein, the air supply and intake distributor 12 is arranged at the burner interface 1 and is connected with the air supply port 2. Referring to fig. 2 and 3, the air supply and intake distributor 12 may be a hollow round cake design, and has an air inlet 26 connected to the air supply opening 2 and a central through hole 24 for passing through the flame burner, and a plurality of combustion air injection holes 25 are formed around the central through hole 24 and uniformly distributed along the circumferential direction. The flame burner is connected through the burner interface 1 and penetrates through the air supplementing and air inlet distributor 12 through the central through hole 24, namely the air supplementing and air inlet distributor 12 is positioned at the tail end of the flame. The temperature of the tail end of the flame is relatively low, and the air supplementing and air inlet distributor 12 can be made of 15CrMoR carbon steel materials.
The ammonia gas inlet distributor 13 comprises a total gas collecting pipe 27 connected with the ammonia gas pipeline interface 3 and a plurality of gas inlet distribution units connected with the total gas collecting pipe 27, and the plurality of gas inlet distribution units are circumferentially fixed on the inner wall of the furnace body front section 41. As shown in fig. 4 to 6, the intake air distribution unit includes a branch gas collecting pipe 28 and a plurality of ammonia gas injection pipes 29, the branch gas collecting pipe 28 is communicated with the main gas collecting pipe 27 and is axially arranged along the length direction of the furnace tube, and the ammonia gas injection pipes 29 are perpendicular to the branch gas collecting pipe 28 and extend toward the flame direction to inject the ammonia gas toward the combustion flame. In this embodiment, the main gas collecting pipe 27 is a circular pipe arranged on the inner wall of the front section 41 of the furnace body and communicated with the ammonia gas pipe at the ammonia gas pipe interface 3, the branch gas collecting pipes 28 are arranged along the circumferential direction of the main gas collecting pipe 27 and are a straight pipe with a length slightly greater than the length of the combustion flame and provided with a plurality of through holes for connecting the ammonia gas injection pipes 29, and the ammonia gas injection pipes 29 are uniformly distributed on the branch gas collecting pipes 28. As a preferable scheme, the lengths of the ammonia gas injection pipes 29 are not completely equal, and the connecting line of the tail ends of the ammonia gas injection pipes 29 distributed on the same branch gas collecting pipe 28 is matched with the outer edge contour line of the flame corresponding to the tail ends of the ammonia gas injection pipes, so that the fed ammonia gas is just fed into the outer edge of the combustion flame for full combustion. The ammonia gas inlet distributor 13 can be made of high-temperature-resistant 310S stainless steel due to direct contact with high-temperature flame.
Referring to fig. 7, after ammonia gas is introduced into the incinerator through the ammonia gas pipeline interface 3, the ammonia gas firstly enters the main gas collecting pipe 27 by means of the ammonia gas inlet distributor 13, the ammonia gas is sent into each branch gas collecting pipe 28 by the main gas collecting pipe 27, and then is uniformly distributed to each ammonia gas injection pipe 29, and finally, the ammonia gas is injected to the outer edge of the flame by the ammonia gas injection pipe 29, so that the ammonia gas is fully combusted at the outer edge of the flame. At the moment, combustion air enters the air supplementing and air inlet distributor 12 in the furnace body 4 from the air supplementing opening 2, a plurality of air flows are sprayed into a hearth through combustion air spraying holes 25 on the air supplementing and air inlet distributor 12, a circle of air wall is formed on the periphery of flame generated by a flame burner, oxygen required by combustion is provided, uniform distribution of the oxygen is guaranteed, meanwhile, the temperature of the air wall formed by spraying is low, the periphery of the flame is locally cooled, and local high temperature is limited in the air wall. Therefore, the two are matched for use, on one hand, the ammonia can be fully combusted at the outer edge of the flame, on the other hand, the local high temperature can be limited in a gas wall, and the NO is reducedXAnd (4) generating.
Preferably, the middle section 42 of the furnace body is designed to have a substantially venturi structure, and includes a contraction portion 421 connected to the front section of the furnace body, a diffusion portion 422 connected to the rear section of the furnace body, and a throat portion 423 located between the contraction portion and the diffusion portion. Therefore, the invention applies the principle of the Venturi tube, the middle section 42 of the furnace body is designed into the Venturi tube structure, when the burning smoke flows through the narrowest part of the reducing structure, the smoke and the combustion air are mixed more uniformly because the pipe diameter at the position is reduced and the flow speed is increased, and when the smoke flows through the reducing structure at the position, the back part (diffusion part) of the Venturi tube generates low pressure due to the Venturi effect and has adsorption effect, so that the mixed smoke is uniformly diffused, and the residual ammonia gas flowing through the rear-section fire-blocking wall can be completely burnt.
Guarantee the complete combustion of useless ammonia also is the key of the effective operation of stove, and the ammonia dwell time is longer can make the ammonia burning more complete in furnace, nevertheless also can make the volume grow of stove, and the cost greatly increases. As a preferable scheme, a fire wall (a high-temperature heat accumulator) is arranged in the furnace, and due to the fact that the heat accumulation interior of the fire wall has high temperature, unburned NH3 molecules can be combusted and decomposed through the fire wall, and therefore complete combustion of ammonia gas is guaranteed. The fire wall 18 is a high-temperature resistant ceramic heat accumulator matched with the section of the hearth in size, and the porosity is about 40-45%. Through the heat accumulator structure in the furnace, ammonia gas can be fully combusted. The temperature of the firestop wall 18 is maintained at 950 + -30 deg.C, which exceeds the ignition point 651 deg.C of ammonia, and the unburned NH3 molecules will also burn through the firestop wall 18. Therefore, the fire barrier wall is arranged at the rear section of the incinerator, on one hand, a high-temperature resistant ceramic heat accumulator with porosity of 40-45% is adopted, so that a small amount of incompletely combusted ammonia gas is completely combusted when passing through narrow gaps in the fire barrier wall, on the other hand, the ceramic has the advantage of stable property while being fireproof, the incinerator temperature is stable, in addition, flame spreading combustion can be effectively prevented from reaching the outer part of a smoke outlet of the incinerator body, and potential safety hazards such as fire and the like are avoided.
Wherein, temperature transmitter 19 connected through temperature transmitter interface 5 measures the temperature in the furnace, and differential pressure transmitter 20 connected through differential pressure transmitter interface 7 measures the pressure change in the furnace. The temperature change in the furnace is observed by the temperature transmitter 19 to perform the corresponding operation. Differential pressure transmitter 20 can show the actual measurement pressure value in the furnace in controlling means's display screen by the signal of telecommunication mode, sets up to negative pressure mode of operation in the furnace, guarantees on the one hand that air supply opening 2 opens the back and for induced draft the state, does not have the potential safety hazard, and on the other hand negative pressure and smoke exhaust fan are chain, and is more energy-conserving.
It should be noted that the front section 41 of the furnace body is a flame combustion section, the airflow environment of the middle section 42 of the furnace body is similar to the venturi principle, and the temperature and pressure fluctuation is large and relatively unstable, so as to be a preferred scheme, the temperature transmitter interface 5 and the differential pressure transmitter interface 7 are arranged at the rear section 43 of the furnace body, and the temperature and pressure values of the rear section of the furnace chamber with relatively stable internal airflow environment are detected by the temperature transmitter 19 and the differential pressure transmitter 20, so that the detection values are more accurate. In addition, the temperature transmitter 19 and the differential pressure transmitter 20 are arranged at the downstream of the fire-blocking wall 18, so that the detection device can be prevented from being burnt out due to direct contact with flame, and the service life is prolonged.
With reference to fig. 2, embodiment 2 discloses a high-purity waste ammonia gas incineration system, which mainly includes the incinerator 10 described in embodiment 1, a burner 11, a fuel air inlet pipeline, an air supplementing air inlet pipeline, an ammonia gas inlet pipeline, an air supplementing fan 17, a fire wall 18, a finned tube heat exchanger 21 and a smoke exhaust fan 22, wherein a fuel air inlet control valve 14 is arranged on the fuel air inlet pipeline, an air supplementing air inlet control valve 15 and an air supplementing fan 17 are arranged on the air supplementing air inlet pipeline, and an ammonia gas inlet control valve 16 is arranged on the ammonia gas inlet pipeline. The combustor 11, the incinerator 10, the finned tube heat exchanger 21 and the smoke exhaust fan 22 are sequentially connected, the fuel air inlet pipeline is connected with the combustor 11, and the air supplementing air inlet pipeline and the ammonia air inlet pipeline are connected with the incinerator 10.
Specifically, combustor 11 connects the combustor interface 1 that burns burning furnace 10 one end, and fuel admission control valve 14 passes through the feed inlet of pipe connection combustor 11, and air supply admission control valve 15 passes through the moisturizing wind gap 2 of pipe connection burning furnace 10, and air supply fan 17 connects air supply admission control valve 15, and ammonia admission control valve 16 passes through the ammonia pipeline interface 3 of pipe connection burning furnace 10. The hot side channel of the finned tube heat exchanger 21 is respectively connected with the flue gas outlet 8 of the incinerator 10 and the smoke exhaust fan 22, the cold side channel of the finned tube heat exchanger 21 is externally connected with a cold medium source, and the smoke exhaust fan 22 is externally connected with a chimney.
Wherein, the inlet and outlet ends of the hot side channel of the finned tube heat exchanger 21 are respectively connected with the flue gas outlet 8 of the incinerator 10 and the smoke exhaust fan 22. Because the fluid media on the cold side and the hot side are respectively gas and liquid, the finned tube heat exchanger is selected to have the best heat exchange performance and low price in consideration of the type selection performance of the heat exchanger. Wherein, the cold medium source can be glycol and isopropanol, and the glycol is preferably selected according to the requirement of the ammonia gas manufacturing process flow. Preferably, the cold-side medium is a circulating medium, and is cooled in the process system and then returns to the heat exchanger for reheating, so that the heat energy utilization is realized.
The smoke exhaust fan 22 is an induced draft fan, preferably performs frequency conversion control, and can adjust the air volume of the fan by adjusting the frequency through frequency conversion. The air supplementing fan 17 is preferably controlled in a variable frequency mode, and air inflow can be adjusted according to process requirements.
The burner 11 may also be replaced by other burning devices such as a burner, but it should be noted that the burner must be set as a pilot burner to ensure that the burning process does not extinguish.
Preferably, the system further comprises a control device (not shown in the figure), and all the detection measurement control signals and the electric valve control signals are connected into the control device, and the control of each electric appliance element is realized on an operation console of the control device. Specifically, the temperature transmitter 19, the differential pressure transmitter 20, the ammonia gas inlet control valve 16, the air supply inlet control valve 15, the air supply fan 17, the fuel inlet control valve 14 and the smoke exhaust fan 22 are all connected to a control device to realize automatic control. The control device may be a PLC control or a DCS control, preferably a PLC control. The air supplementing fan 17, the smoke exhaust fan 22, the air supplementing and air inlet control valve 15 and the differential pressure transmitter 20 are controlled in an interlocking manner through a control device, so that internal negative pressure operation is realized; the fuel air inlet control valve 14, the air supply air inlet control valve 15, the ammonia air inlet control valve 16 and the temperature transmitter 19 are controlled in an interlocking way through the control device, and the furnace temperature is kept constant at 950 +/-30 ℃, so that the problems that more nitrogen oxides are generated due to overhigh furnace temperature, the smoke emission does not reach the standard, or the furnace temperature is too low, and the ammonia gas is not combusted fully are avoided.
Based on embodiment 2 the high-purity waste ammonia gas incineration system has the following working procedures:
before starting, whether each component is connected correctly is checked, and then the interior of the hearth is purged after the components are checked to be correct, so that residual ammonia which is not completely combusted during the last parking is not left in the hearth before starting. Air is introduced into the hearth by opening the air supply and intake control valve 15, the air supply fan 17 and the smoke exhaust fan 22, the interior of the hearth is purged for at least 3 hours, and therefore ammonia gas possibly accumulated in the hearth is avoided.
And the smoke exhaust fan 22, the air supplementing and air inlet control valve 15 and the air supplementing fan 17 are sequentially started, the air supplementing fan 17, the smoke exhaust fan 22, the air supplementing and air inlet control valve 15 and the differential pressure transmitter 20 are controlled in an interlocking manner through a control program set by the DCS, and the air quantity of the two fans is adjusted and controlled to realize negative pressure of-300 Pa.
The burner 11 is started, the fuel gas inlet control valve 14 is opened to introduce fuel hydrogen, spark ignition forms flame in the hearth, the temperature in the hearth is continuously increased at the moment, the corresponding temperature monitored by the temperature transmitter 19 is observed, and when the temperature in the hearth reaches about 500 ℃, cold media are introduced into a cold side channel of the finned tube heat exchanger 21 to prevent a heat exchange assembly from being burnt out.
The corresponding temperature monitored by the temperature transmitter 19 is observed, and when the temperature in the hearth reaches about 800 ℃, the ammonia gas inlet control valve 16 is opened to introduce ammonia gas. The ammonia gas is fully contacted with the flame through the ammonia gas inlet distributor 13, so that the ammonia gas is fully combusted.
The ammonia gas burning can produce a large amount of heat, reduces the fuel input of combustor 11 through DCS system control, but can not let the flame extinguish to there is the explosion danger.
The air supply quantity is adjusted by the air supply and inlet control valve 15, and air passes through the air supply and inlet distributor 12 to form an air wall at the outer edge of the flame through the jet holes on the air supply and inlet distributor 12, so that a local high-temperature area (about 1400-1500 ℃) is limited at the outermost edge of the flame, and NO generated by local high temperature in a hearth is reducedXAnd (4) generating.
The fuel air inlet control valve 14, the air supplementing air inlet control valve 15, the ammonia air inlet control valve 16 and the temperature transmitter 19 are controlled in an interlocking manner through a PLC system, the temperature of the hearth is kept to be 950 +/-30 ℃, and the overhigh temperature of the hearth is avoided.
Flue gas generated by waste ammonia combustion flows through the fire-blocking wall 18, and trace undecomposed ammonia gas in the flue gas is completely decomposed in the process of flowing through the fire-blocking wall 18.
High-temperature flue gas with the temperature of about 950 ℃ enters a hot side channel of the finned tube heat exchanger 21 through the flue gas outlet 8, the cold medium introduced into the cold side channel of the finned tube heat exchanger 21 is heated, and the heated cold medium can be used in other processes to realize waste heat recovery and reutilization.
After the heat exchange of the finned tube heat exchanger 21 is completed, the cooled flue gas enters a chimney through a smoke exhaust fan 22 and is finally discharged to the atmosphere.
It should be noted that, because the content of hydrogen in ammonia gas is relatively high, a large amount of water vapor is generated in the combustion process of the furnace, and the furnace needs to be dried after each shutdown, so as to ensure that the hearth is not corroded by the condensed water generated by the gradual cooling of the humid air generated by combustion.
A set of specific application test cases of the high-purity waste ammonia gas incineration system based on the embodiment 2 are given as follows:
and (3) related parameters: concentration of waste ammonia gas: 99.9 percent; maximum treatment capacity of waste ammonia gas: 70 kg/h; auxiliary fuel: hydrogen gas; circulating liquid: an aqueous ethylene glycol solution; maximum circulating liquid amount: 30 tons/h; ethylene glycol aqueous solution, temperature: 50 ℃;
and (3) starting the smoke exhaust fan 22 and the air supplement fan 17, introducing fuel hydrogen into the fuel machine 11 and igniting after blowing for 3 hours, starting to increase the temperature of the hearth, observing the temperature in the hearth through the temperature transmitter 19 in a control console, and introducing ethylene glycol circulating liquid into the finned tube heat exchanger 21 when the temperature is increased to a certain value (about 500-600 ℃).
When the temperature is detected to rise to 800 ℃, opening an ammonia gas inlet control valve 16, starting to introduce ammonia gas, controlling the ammonia gas inlet control valve 16, a fuel gas inlet control valve 14 and an air supplementing inlet control valve 15 through a DCS control system, adjusting the proportion of the ammonia gas, the hydrogen gas and the combustion-supporting air, maintaining the temperature of a hearth to be 950 +/-30 ℃ for incineration, completely combusting trace undecomposed ammonia gas through a fire wall 18 by generated flue gas in the incineration process, reducing the temperature to about 100 ℃ after passing through a finned tube heat exchanger 21, and then entering a chimney through a smoke exhaust fan 22 for direct discharge. In the process, the cold medium glycol circulating liquid entering the finned tube heat exchanger 21 is heated to 65 ℃ from 50 ℃, and can be used for condensation and purification of ammonia gas.
It should be understood that the above-mentioned embodiments are preferred embodiments of the present invention, and the scope of the present invention is not limited to these embodiments, and any modifications made according to the present invention are within the scope of the present invention.
Claims (8)
1. A high-purity waste ammonia gas incinerator is characterized by comprising a furnace body, a burner interface, an air supplementing opening, an ammonia gas pipeline interface and a smoke outlet which are arranged on the furnace body, a first air inlet distribution device, a second air inlet distribution device and a fire barrier which are arranged in the furnace body, a temperature detection device for detecting the temperature in the furnace body and a differential pressure detection device for detecting the pressure in the furnace body; the first air inlet distribution device is connected with an ammonia pipeline through an ammonia pipeline interface, and the second air inlet distribution device is connected with a combustion-supporting air pipeline through an air supplementing opening; the first air inlet distribution device comprises a main air collecting pipe connected with an ammonia pipeline interface and a plurality of ammonia distribution units which are connected with the main air collecting pipe and are circumferentially arranged along the inner wall of the furnace body; the ammonia gas distribution unit is provided with a branch gas collecting pipe connected with the main gas collecting pipe and a plurality of ammonia gas injection pipes arranged on the branch gas collecting pipe, and the ammonia gas injection pipes are arranged along the axial direction of the furnace body; the second air inlet distribution device is constructed into a hollow structure and is provided with an air inlet connected with the air supply opening and a plurality of combustion air injection holes distributed circumferentially; when fuel generates flame in a hearth through a flame burner of the combustion device, ammonia introduced by an ammonia pipeline is distributed at the outer edge of the flame through the first air inlet distribution device to be fully combusted, and combustion-supporting air introduced by a combustion-supporting air pipeline is sprayed along the axial direction of the furnace body through the second air inlet distribution device to form a circle of air wall at the periphery of the flame; in the ammonia gas distribution unit, the injection direction of the ammonia gas injection pipe is over against the flame, and the tail end connecting line is matched with the outer edge contour line of the flame in the axial direction corresponding to the tail end connecting line.
2. The incinerator of claim 1, wherein said second inlet air distribution means further has a central through hole for passing flame burner, and said combustion air injection holes are uniformly distributed circumferentially around said central through hole.
3. A high-purity waste ammonia gas incineration system, which is characterized by comprising a combustion device, an ammonia gas pipeline, a combustion air pipeline, a fuel pipeline, a heat exchange device, a smoke exhaust fan, a control device and the high-purity waste ammonia gas incinerator as claimed in any one of claims 1-2; the flame burner of the combustion device is a pilot burner and is connected with a burner interface of the high-purity waste ammonia gas incinerator; the fuel pipeline is connected with a feed inlet of the combustion device; an inlet of a hot side channel of the heat exchange device is connected with a flue gas outlet of the high-purity waste ammonia gas incinerator, an outlet of the hot side channel is connected with a smoke exhaust fan, and a cold side channel is externally connected with a cold medium; the ammonia pipeline is provided with a first air inlet control valve; the combustion-supporting air pipeline is provided with an air supplementing fan and a second air inlet control valve; the fuel pipeline is provided with a third air inlet control valve; the control device controls the air supply fan, the smoke exhaust fan, the second air inlet control valve and the differential pressure detection device in an interlocking manner so as to realize pressure regulation in the high-purity waste ammonia gas incinerator; the control device controls the first fuel inlet control valve, the second fuel inlet control valve, the third fuel inlet control valve and the temperature detection device in an interlocking manner so as to realize temperature regulation in the high-purity waste ammonia gas incinerator.
4. The high purity waste ammonia gas incineration system of claim 3, wherein the heat exchange device is a finned tube heat exchanger.
5. The high purity waste ammonia gas incineration system of claim 3, wherein the smoke exhaust fan and the air make-up fan are frequency-variable controlled.
6. A high-purity waste ammonia gas incineration process, which is characterized in that the high-purity waste ammonia gas incineration system based on the claim 3 comprises the following steps:
opening a second air inlet control valve, an air supplementing fan and a smoke exhaust fan to introduce air into the hearth, and purging the inside of the hearth to remove ammonia gas accumulated in the hearth;
the air quantity of the air supplementing fan and the air quantity of the smoke exhaust fan are adjusted by interlocking control of the air supplementing fan, the smoke exhaust fan, the second air inlet control valve and the differential pressure detection device, and negative pressure operation in the hearth is maintained;
starting a combustion device, opening a third air inlet control valve, introducing fuel and igniting to form flame in a hearth, continuously raising the temperature in the hearth, observing the temperature monitored by a temperature detection device, and introducing a cold medium into a cold side channel of a heat exchange device when the temperature in the hearth reaches 500 ℃;
observing the temperature monitored by the temperature detection device, opening a first air inlet control valve to introduce high-purity waste ammonia gas when the temperature in the hearth reaches 800 ℃, and distributing the high-purity waste ammonia gas at the outer edge of the flame through a first air inlet distribution device and fully combusting the high-purity waste ammonia gas;
the air supply quantity is adjusted through a second air inlet control valve, combustion-supporting air is sprayed on the periphery of the flame through a second air inlet distribution device to form an air wall, oxygen is supplemented for ammonia combustion, and a local high-temperature area is limited within the air wall;
the first air inlet control valve, the second air inlet control valve, the third air inlet control valve and the temperature detection device are controlled in an interlocking manner through the control device, and the temperature of the hearth is maintained to be 950 +/-30 ℃;
in the combustion process, the incompletely decomposed ammonia gas is fully decomposed by a fire wall;
the decomposed high-temperature flue gas enters a hot side channel of the heat exchange device through a flue gas outlet, and a cold medium introduced into a cold side channel of the heat exchange device is heated to realize waste heat utilization;
and the flue gas cooled by the heat exchange device enters a chimney through a smoke exhaust fan and is finally discharged to the atmosphere.
7. A high purity waste ammonia gas incineration system, comprising a combustion device, a combustion air line, an ammonia gas line, a fuel line, a control device, and the high purity waste ammonia gas incinerator according to any one of claims 1 to 2; the combustion device is connected with a burner interface of the high-purity waste ammonia gas incinerator; the flue gas outlet of the high-purity waste ammonia gas incinerator is connected with an external chimney through a pipeline; the ammonia pipeline is provided with a first air inlet control valve; the combustion-supporting air pipeline is provided with an air supplementing fan and a second air inlet control valve; the fuel pipeline is provided with a third air inlet control valve; the control device controls the smoke exhaust fan, the second air inlet control valve and the differential pressure detection device in an interlocking manner, so that negative pressure operation in the high-purity waste ammonia gas incinerator is realized; the control device controls the first air inlet control valve, the second air inlet control valve, the third air inlet control valve and the temperature detection device in an interlocking manner so as to realize temperature regulation in the high-purity waste ammonia gas incinerator.
8. A high-purity waste ammonia gas incineration process, which is characterized in that the high-purity waste ammonia gas incineration system based on the claim 7, comprises the following steps:
opening a second air inlet control valve, an air supplementing fan and a smoke exhaust fan to introduce air into the hearth, and purging the inside of the hearth to remove ammonia gas accumulated in the hearth;
the air quantity of the two air supplementing fans and the air quantity of the smoke exhaust fan are adjusted by interlocking control of the air supplementing fans, the smoke exhaust fan, the second air inlet control valve and the differential pressure detection device, and negative pressure operation in the hearth is maintained;
starting a combustion device, opening a third air inlet control valve, introducing fuel and igniting to form flame in the hearth, and continuously increasing the temperature in the hearth;
when the temperature detection device detects that the temperature in the hearth reaches 800 ℃, opening a first air inlet control valve to introduce high-purity waste ammonia gas, and distributing the high-purity waste ammonia gas at the outer edge of the flame through a first air inlet distribution device and fully combusting the high-purity waste ammonia gas;
the air supply quantity is adjusted through a second air inlet control valve, combustion-supporting air is sprayed on the periphery of the flame through a second air inlet distribution device to form an air wall, oxygen is supplemented for ammonia combustion, and a local high-temperature area is limited within the air wall;
the first air inlet control valve, the second air inlet control valve, the third air inlet control valve and the temperature detection device are controlled in an interlocking manner through the control device, and the temperature of the hearth is maintained to be 950 +/-30 ℃;
in the combustion process, the incompletely decomposed ammonia gas is fully decomposed by a fire wall;
and discharging the decomposed high-temperature flue gas to the atmosphere through a chimney.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507439.8A CN109595568B (en) | 2018-12-11 | 2018-12-11 | High-purity waste ammonia gas incinerator, system and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507439.8A CN109595568B (en) | 2018-12-11 | 2018-12-11 | High-purity waste ammonia gas incinerator, system and process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109595568A CN109595568A (en) | 2019-04-09 |
| CN109595568B true CN109595568B (en) | 2020-04-03 |
Family
ID=65961645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811507439.8A Active CN109595568B (en) | 2018-12-11 | 2018-12-11 | High-purity waste ammonia gas incinerator, system and process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109595568B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294779B (en) * | 2021-05-28 | 2022-10-11 | 华中科技大学 | High-temperature air combustion device for ammonia gas |
| CN115159571A (en) * | 2022-06-29 | 2022-10-11 | 安徽望盛钒基新材料技术有限公司 | Production V based on ammonium vanadate raw material 2 O 5 Process system and method |
| CN115854369A (en) * | 2023-02-17 | 2023-03-28 | 江苏齐清环境科技有限公司 | Method and device for treating m-phthalonitrile ammonia oxidation waste gas based on negative pressure direct combustion type combustion purification treatment technology |
| CN117065551B (en) * | 2023-10-18 | 2024-01-02 | 上海鲁源控制设备有限公司 | Mixing equipment for denitration ammonia injection |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303726A (en) * | 1999-12-22 | 2001-07-18 | 中国科学院山西煤炭化学研究所 | Method of removing high-concentration nitrogen dioxide from fuel oil and its equipment |
| CA2312257A1 (en) * | 2000-06-23 | 2001-12-23 | J.W. Williams Inc. | Hydrocarbon combustor |
| CN1584400A (en) * | 2003-08-20 | 2005-02-23 | 日本派欧尼株式会社 | Purifier for harmful gases |
| CN101292116A (en) * | 2005-11-11 | 2008-10-22 | Khd洪保德韦达克有限公司 | Rotary furnace burner |
| CN102518020A (en) * | 2011-12-20 | 2012-06-27 | 中联重科股份有限公司 | Asphalt mixture thermal regeneration equipment and combustion device |
| CN102705840A (en) * | 2012-07-02 | 2012-10-03 | 魏伯卿 | Incinerator oxygen enrichment part oxygenation efflux combustion-supporting method and device |
| CN102782408A (en) * | 2010-03-05 | 2012-11-14 | 日野自动车株式会社 | Combustion appliance for raising the temperature of exhaust gas |
| CN104006393A (en) * | 2014-04-25 | 2014-08-27 | 上海煜工环保科技有限公司 | Organic waste gas high-temperature oxidation burning method and heat-storage-bed-type high-temperature oxidation furnace |
| CN107676798A (en) * | 2017-10-16 | 2018-02-09 | 岳阳钟鼎热工电磁科技有限公司 | Ammonia-contaminated gas incinerator and the method using its burning ammonia-contaminated gas |
| CN207162558U (en) * | 2017-08-23 | 2018-03-30 | 南京合创工程设计有限公司 | A kind of processing system of high-purity ammon factory richness ammonia tail gas |
| CN107894001A (en) * | 2017-11-17 | 2018-04-10 | 北京航化节能环保技术有限公司 | A kind of special kind firing device of burning disposal higher boiling waste liquid and waste gas |
-
2018
- 2018-12-11 CN CN201811507439.8A patent/CN109595568B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303726A (en) * | 1999-12-22 | 2001-07-18 | 中国科学院山西煤炭化学研究所 | Method of removing high-concentration nitrogen dioxide from fuel oil and its equipment |
| CA2312257A1 (en) * | 2000-06-23 | 2001-12-23 | J.W. Williams Inc. | Hydrocarbon combustor |
| CN1584400A (en) * | 2003-08-20 | 2005-02-23 | 日本派欧尼株式会社 | Purifier for harmful gases |
| CN101292116A (en) * | 2005-11-11 | 2008-10-22 | Khd洪保德韦达克有限公司 | Rotary furnace burner |
| CN102782408A (en) * | 2010-03-05 | 2012-11-14 | 日野自动车株式会社 | Combustion appliance for raising the temperature of exhaust gas |
| CN102518020A (en) * | 2011-12-20 | 2012-06-27 | 中联重科股份有限公司 | Asphalt mixture thermal regeneration equipment and combustion device |
| CN102705840A (en) * | 2012-07-02 | 2012-10-03 | 魏伯卿 | Incinerator oxygen enrichment part oxygenation efflux combustion-supporting method and device |
| CN104006393A (en) * | 2014-04-25 | 2014-08-27 | 上海煜工环保科技有限公司 | Organic waste gas high-temperature oxidation burning method and heat-storage-bed-type high-temperature oxidation furnace |
| CN207162558U (en) * | 2017-08-23 | 2018-03-30 | 南京合创工程设计有限公司 | A kind of processing system of high-purity ammon factory richness ammonia tail gas |
| CN107676798A (en) * | 2017-10-16 | 2018-02-09 | 岳阳钟鼎热工电磁科技有限公司 | Ammonia-contaminated gas incinerator and the method using its burning ammonia-contaminated gas |
| CN107894001A (en) * | 2017-11-17 | 2018-04-10 | 北京航化节能环保技术有限公司 | A kind of special kind firing device of burning disposal higher boiling waste liquid and waste gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109595568A (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109595568B (en) | High-purity waste ammonia gas incinerator, system and process | |
| CN109595567B (en) | High-purity waste ammonia incinerator and system | |
| CN104501163B (en) | Oxygen-rich gas combustion device and oxygen-rich gas combustion method | |
| CN104121581B (en) | A kind of high efficency low NOx tubular heater low concentration oxygen-enriched combustion system and burner | |
| CN205137854U (en) | Gas water heater | |
| CN209263022U (en) | A kind of short flame burner nozzle of self-preheating type | |
| CN207716416U (en) | The continous way Self-heat-storage flameless burner of the double preheatings of air/gas | |
| CN209229758U (en) | A kind of high concentration incinerator of combustable gas and system | |
| CN101571289B (en) | Fuel gas intermittent combustion heating furnace | |
| CN210069874U (en) | Flue gas heating system | |
| CN107906516A (en) | A kind of continous way Self-heat-storage flameless burner of the double preheatings of air/gas | |
| CN112413562A (en) | Device and method for protecting water-cooled wall of boiler by introducing flue gas at tail of boiler | |
| CN2890657Y (en) | Heat storage type pulse burning nozzle | |
| CN209229759U (en) | A kind of high-purity is given up ammonia incinerator and incineration system | |
| CN205137453U (en) | A gas combustion ware for sulfur waste acid treatment | |
| EP2682675B1 (en) | Flue gas recycle system with fixed orifices | |
| CN102206742A (en) | Waste hydrogen combustion system for full-hydrogen bell-type furnace used for bright annealing | |
| CN112696664A (en) | Smoke generator and efficient smoke recirculation system | |
| CN107606629B (en) | Anti-ash ammonium bisulfate vaporization heating device of air preheater of SCR denitration unit | |
| CN206176368U (en) | Pure oxygen combustor | |
| CN216281382U (en) | High-speed burner with integrated heat exchanger and heating function | |
| CN111059531A (en) | Novel nitrogen-oxygen burner | |
| CN117925934B (en) | Reducing gas temperature raising device, hydrogen-based smelting system and reducing gas temperature raising method | |
| CN215757165U (en) | Continuous cracking heating device | |
| CN217948179U (en) | Hot-blast furnace and green ball drying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200312 Address after: 213300 No.1 Xiding Road, Daibu Town, Liyang City, Changzhou City, Jiangsu Province Applicant after: Jiangsu prante Energy Saving Technology Co.,Ltd. Address before: Room 101, 1st floor, C Building, Nanzi Digital Power Plant Industrial Park, No. 9 Huida Road, Jiangbei New District, Nanjing City, Jiangsu Province Applicant before: NANJING PRANDTL HEAT TRANSFER EQUIPMENT Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211126 Address after: 213341 room 2013, building 2, No. 1, people's Square, shezhu Town, Liyang City, Changzhou City, Jiangsu Province Patentee after: Prante heat exchange equipment (Liyang) Co.,Ltd. Address before: 213300 No.1 Xiding Road, Daibu Town, Liyang City, Changzhou City, Jiangsu Province Patentee before: Jiangsu prante Energy Saving Technology Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213341 room 2013, building 2, No. 1, people's Square, shezhu Town, Liyang City, Changzhou City, Jiangsu Province Patentee after: Plant heat exchange equipment (Liyang) Co.,Ltd. Address before: 213341 room 2013, building 2, No. 1, people's Square, shezhu Town, Liyang City, Changzhou City, Jiangsu Province Patentee before: Prante heat exchange equipment (Liyang) Co.,Ltd. |