CN118031630A - Magnetic control flowing suspension roasting and energy-saving power generation purification integrated device - Google Patents

Magnetic control flowing suspension roasting and energy-saving power generation purification integrated device Download PDF

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Publication number
CN118031630A
CN118031630A CN202410423798.4A CN202410423798A CN118031630A CN 118031630 A CN118031630 A CN 118031630A CN 202410423798 A CN202410423798 A CN 202410423798A CN 118031630 A CN118031630 A CN 118031630A
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Prior art keywords
cooling
pipe
separator
roasting
inlet
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CN202410423798.4A
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CN118031630B (en
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师圆生
杨林鲜
曾福厚
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Shandong Baolan Environmental Protection Co ltd
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Shandong Baolan Environmental Protection Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/79—Injecting reactants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • F27B15/02—Details, accessories, or equipment peculiar to furnaces of these types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • F27B15/02—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B15/08—Arrangements of devices for charging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B15/00—Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion
    • F27B15/02—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B15/16—Arrangements of cooling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2062—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention belongs to the technical field of roasting devices, and particularly relates to a magnetic control flow suspension roasting and energy-saving power generation purification integrated device. The system comprises a material roasting system, a material drying system, a flue gas denitration and dust removal system, a material cooling system and an ORC low-temperature waste heat power generation system; the material roasting system comprises a flowing suspension roasting furnace and a roasting separator; the material drying system comprises a raw material bin, a Venturi dryer, a high-efficiency material separator, a primary preheater and a secondary preheater; the flue gas denitration and dust removal system comprises a ceramic membrane denitration and dust removal device; the material cooling system comprises a first-stage cooler, a second-stage cooler, a third-stage cooler, a fourth-stage cooler, a fluidized cooling bed, a cooling bed separator and a cooling centrifugal separator. The invention carries out graded utilization on the heat of the flue gas, simultaneously carries out graded cooling on the roasted high-temperature material, fully utilizes the heat energy, saves the energy, achieves the purpose of purifying the flue gas, and is beneficial to environmental protection.

Description

Magnetic control flowing suspension roasting and energy-saving power generation purification integrated device
Technical Field
The invention belongs to the technical field of roasting devices, and particularly relates to a magnetic control flow suspension roasting and energy-saving power generation purification integrated device.
Background
Rotary kiln calcination is an important industrial process, mainly used for calcination and treatment of various materials. The core of the process is that the raw materials are subjected to a calcination process at high temperature by means of a rotating cone kiln drum, thereby changing their physical and chemical properties. The roasting process of the rotary kiln comprises the following steps: raw materials enter an inlet end of the rotary kiln through a feeding device and gradually move forward along with the operation of the rotary kiln in the kiln. The raw materials are processed in the kiln in a plurality of stages such as a preheating zone, a calcining zone, a cooling zone and the like. In the preheating zone, the raw materials are subjected to the high temperature of combustion gas, and water and organic substances begin to be evaporated and combusted; in the calcining zone, the raw material reaches the highest temperature, usually between 1200 ℃ and 1500 ℃, and chemical substances in the raw material undergo petrochemical reaction to obtain a required product; the baked clinker enters a cooling zone and is rapidly cooled by external cooling air, so that the quality and stability of the product are improved. The rotary kiln is widely applied to cement, lime, power plants, nonferrous metallurgy, ferrous metallurgy and other industries, is mainly used for calcining cement clinker in the cement industry, is used for magnetization roasting of lean iron ore in steel plants, oxidation roasting of chromium and nickel iron ore in the metallurgical chemical industry field, roasting of high alumina bauxite in refractory material plants and clinker and aluminum hydroxide in aluminum plants, and is also used for roasting minerals such as chrome ore sand, chrome ore powder and the like in chemical plants.
Although the rotary kiln roasting process has wide application, there are some significant disadvantages:
the thermal efficiency is low: during calcination in the rotary kiln, a large amount of heat escapes through the flue gas, resulting in reduced thermal efficiency in the kiln. The heat loss not only reduces the utilization rate of energy sources, but also increases the production cost;
Temperature control is difficult: the heating conditions in the kiln and the atmosphere conditions of the firing are variable, and are difficult to control and regulate accurately. This may lead to instability in product quality, increasing the reject rate;
The operation is complex: the operation condition of the rotary kiln is relatively heavy, and the working process is complex. The kiln loading and unloading processes often cannot be completely mechanized, which increases the labor intensity of workers and is also unfavorable for improving the production efficiency.
The waste heat recovery difficulty is high: the temperature of the flue gas at the outlet of the rotary kiln is higher, but the difficulty of waste heat recycling is higher. This not only results in waste of energy, but may also have some impact on the environment.
Environmental pollution: the rotary kiln of the traditional coal-fired heat source has the defects of low heat conversion efficiency, slow heating speed, uncontrollable temperature control precision, low product yield, large chromatic aberration and the like, and the harmful substance concentration of waste gas generated in use is higher and can meet the environmental protection requirement for emission only through a series of complex treatment processes.
In addition, the rotary kiln has relatively short service life, consumes labor and is not easy to maintain, and potential safety hazards such as electric leakage and electric shock, air leakage and fire disaster exist.
Disclosure of Invention
In order to solve the technical problems, the invention provides the integrated device for magnetic control flow suspension roasting and energy-saving power generation purification, which is used for carrying out graded utilization on the heat of the flue gas, and simultaneously carrying out graded cooling on the roasted high-temperature material, so that the heat energy is fully utilized, the energy is saved, the purpose of purifying the flue gas is achieved, and the environmental protection is facilitated. The device can be widely applied to industries such as iron and steel, metallurgy, building materials, cement and the like.
The invention relates to a magnetic control flowing suspension roasting and energy-saving power generation and purification integrated device, which comprises a material roasting system, a material drying system, a flue gas denitration and dust removal system, a material cooling system and an ORC low-temperature waste heat power generation system;
The material roasting system comprises a flowing suspension roasting furnace and a roasting separator;
the material drying system comprises a raw material bin, a Venturi dryer, a high-efficiency material separator, a primary preheater and a secondary preheater;
The flue gas denitration and dust removal system comprises a ceramic membrane denitration and dust removal device;
The material cooling system comprises a first-stage cooler, a second-stage cooler, a third-stage cooler, a fourth-stage cooler, a fluidized cooling bed, a cooling bed separator and a cooling centrifugal separator;
The raw material bin is connected with a feed inlet of the Venturi dryer through a conveying device, an air inlet of the Venturi dryer is connected with an air outlet at the top of the primary preheater, a discharge outlet at the top of the Venturi dryer is connected with an inlet of the high-efficiency material separator, a discharge outlet at the bottom of the high-efficiency material separator and an air outlet at the top of the secondary preheater are connected with an inlet of the primary preheater through a primary preheating pipe, and a discharge outlet at the bottom of the primary preheater is connected with an inlet of the secondary preheater and an air outlet of the roasting separator through a secondary preheating pipe; the bottom discharge port of the secondary preheater is connected with the feed inlet of the flowing suspension roasting furnace through the feed pipe of the roasting furnace;
The upper air outlet of the flowing suspension roasting furnace is connected with the air inlet of the roasting separator, the air inlet at the bottom of the flowing suspension roasting furnace is connected with the air outlet of the cooling centrifugal separator, the bottom discharge port of the roasting separator and the air outlet at the top of the secondary cooler are connected with the inlet of the primary cooler through primary cooling pipes, the top air outlet of the primary cooler is connected with the inlet of the cooling centrifugal separator through secondary cooling pipes, the bottom discharge port of the secondary cooler, the top air outlet of the quaternary cooler and the air outlet at the top of the cooling bed separator are connected with the inlet of the tertiary cooler through tertiary cooling pipes, the bottom discharge port of the tertiary cooler is connected with the inlet of the quaternary cooler through quaternary cooling pipes, and the quaternary cooling pipes are also connected with a cold air inlet pipe;
The bottom discharge port of the four-stage cooler and the bottom discharge port of the cooling centrifugal separator are connected with the inlet of the fluidized cooling bed, and the air outlet of the fluidized cooling bed is connected with the inlet of the cooling bed separator;
the top air outlet of the high-efficiency material separator is connected with the inlet of the ceramic membrane denitration dust collector through a denitration air pipe, the bottom of the ceramic membrane denitration dust collector is connected with the feeding pipe of the roasting furnace, and the air outlet of the ceramic membrane denitration dust collector is connected with the ORC low-temperature waste heat power generation system.
Preferably, the flue gas denitration dust removal system further comprises a compressed air pipe, an ammonia water tank and a double-fluid atomization spray gun, wherein the compressed air pipe and the ammonia water tank are respectively communicated with the double-fluid atomization spray gun, and a spray gun mouth of the double-fluid atomization spray gun is communicated with the denitration air pipe.
Preferably, the ammonia water tank is connected with the double-fluid atomization spray gun through an ammonia water delivery pump.
Preferably, the flue gas denitration dust removal system further comprises a preheating filter, an air outlet at the top of the high-efficiency material separator is connected with an inlet of the preheating filter, an air outlet at the top of the preheating filter is connected with a denitration air pipe, and a discharge hole at the bottom of the preheating filter is connected with a feeding pipe of the roasting furnace.
Preferably, the gas outlet of the ceramic membrane denitration dust removal device is connected with an ORC low-temperature waste heat power generation system through a draught fan, and the gas outlet of the ORC low-temperature waste heat power generation system is connected with a chimney; the bottom of the ceramic membrane denitration dust removal device is connected with a feeding pipe of the roasting furnace through a spiral ash conveyer.
Preferably, the fluidized suspension roasting furnace is connected with a natural gas inlet pipe to provide the heat required for roasting.
Preferably, the bottom of the fluidized cooling bed is connected with a fluidized air pipe.
Preferably, a cooling pipeline is arranged in the fluidized cooling bed, and a water inlet and a water outlet of the cooling pipeline are respectively connected with a raw material bin cold water pipe and a raw material bin hot water pipe.
Preferably, the raw material bin is provided with a jacket, and a water inlet and a water outlet of the jacket are respectively connected with a raw material bin hot water pipe and a raw material bin cold water pipe. The raw material bin is heated by the jacket, so that raw materials in the raw material bin are preheated.
Preferably, the outlet of the fluidized cooling bed and the discharge port at the bottom of the cooling bed separator are connected with a finished product output pipeline.
Preferably, a magnetic field generating device is arranged on the outer side of the lower part of the flowing suspension roasting furnace, the magnetic field generating device is arranged above a burner of the flowing suspension roasting furnace, and a fireproof heat insulation lining is arranged in the flowing suspension roasting furnace and corresponds to the magnetic field generating device.
Preferably, a plurality of magnetic field generating modules are arranged in the magnetic field generating device, the magnetic field generating modules are symmetrically arranged along the outer side of the flowing suspension roasting furnace, and the magnetic field generating modules can generate high-frequency high-strength controllable electromagnetic fields. The ions are forced to make a swirling motion in the magnetic field, and the plasma (i.e. charged particles) contained in the flame is bound in the magnetic field, so that the principle is also applicable to the flame: when a magnetic field is applied to the flame, the movement of charged particles in the flame in the magnetic field is subjected to lorentz forces, which can result in a change in the shape of the flame, as the lorentz forces change the path and velocity of the charged particles. Under the action of the horizontal magnetic field, ions or ion groups in the flame change the movement direction, move to the outer side of the flame and combine with oxygen in the air, so that combustion becomes more severe. Thus, the magnetic field can change the shape, stability, and combustion strength of the flame by affecting the charged particles in the flame.
The magnetic field generating device is positioned at the upper part of the burner of the flowing suspension roasting furnace and comprises a plurality of (preferably 6) magnetic field generating modules arranged along the flowing suspension roasting furnace, each magnetic field generating module can be independently controlled, and the shape of flame is adjusted by adjusting the magnetic field intensity and the direction of each magnetic field generating module in a coordinated fit manner, so that the flame combustion is ensured to be more sufficient, the flame intensity is improved, and the roasting efficiency is improved.
The pipeline can be provided with a valve according to the control requirement, and the on-off of materials in the corresponding pipeline and the flow of the materials are conveniently controlled through the opening and closing of the valve.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, the raw materials are subjected to multistage preheating through the multistage preheater, cooled flue gas is sent to the ceramic membrane denitration dust removal device for denitration dust removal, then low-temperature waste heat flue gas is used for power generation of an ORC low-temperature waste heat power generation system, and generated electric energy can be used for running of the system, so that heat of the flue gas is fully recovered in the process, heat energy is saved, and meanwhile, denitration catalyst deactivation caused by high-temperature flue gas during denitration is avoided;
2. the invention cools the high-temperature materials in stages through the multistage cooler, and uses the recovered heat for preheating the raw materials, so that the heat energy utilization rate is high;
3. the flow suspension roasting furnace utilizes a magnetic control technology, and controls the flame in a combustion area by adjusting a magnetic field, so that the shape of the flame is adjusted, and the combustion efficiency is improved;
4. The invention achieves the purposes of roasting raw materials and energy-saving and purifying flue gas simultaneously, has high automation degree and high production efficiency, and can be widely applied to industries such as iron and steel, metallurgy, building materials, cement and the like.
Drawings
FIG. 1 is a schematic diagram of a magnetic control flow suspension roasting and energy-saving power generation purification integrated device;
FIG. 2 is a schematic diagram of the structure of the flow suspension roasting furnace of the present invention;
FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;
In the figure, 1, a flowing suspension roasting furnace; 2. roasting the separator; 3. a raw material bin; 4. a venturi dryer; 5. a high efficiency material separator; 6. a primary preheater; 7. a secondary preheater; 8. a ceramic membrane denitration dust removal device; 9. a primary cooler; 10. a secondary cooler; 11. a three-stage cooler; 12. a four-stage cooler; 13. a fluidized cooling bed; 14. a cooling bed separator; 15. cooling the centrifugal separator; 16. a first-stage preheating pipe; 17. a secondary preheating pipe; 18. a feeding pipe of a roasting furnace; 19. a primary cooling pipe; 20. a secondary cooling tube; 21. a third-stage cooling tube; 22. a fourth-stage cooling tube; 23. denitration air pipe; 24. an ORC low-temperature waste heat power generation system; 25. a compressed air pipe; 26. an ammonia water tank; 27. a dual fluid atomizing spray gun; 28. preheating a filter; 29. an induced draft fan; 30. a chimney; 31. a spiral ash conveyer; 32. a fluidization air pipe; 33. raw material bin cold water pipe; 34. a raw material bin hot water pipe; 35. a finished product output pipeline; 36. a magnetic field generating device; 37. a refractory insulation liner; 38. an ammonia water delivery pump; 39. a cold air inlet pipe; 40. and a natural gas inlet pipe.
Detailed Description
The technical scheme of the present invention will be clearly and completely described in the following with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, the integrated device for magnetic control flow suspension roasting and energy-saving power generation and purification comprises a material roasting system, a material drying system, a flue gas denitration and dust removal system, a material cooling system and an ORC low-temperature waste heat power generation system 24;
The material roasting system comprises a flowing suspension roasting furnace 1 and a roasting separator 2;
The material drying system comprises a raw material bin 3, a Venturi dryer 4, a high-efficiency material separator 5, a primary preheater 6 and a secondary preheater 7;
the flue gas denitration and dust removal system comprises a ceramic membrane denitration and dust removal device 8;
The material cooling system comprises a primary cooler 9, a secondary cooler 10, a tertiary cooler 11, a quaternary cooler 12, a fluidized cooling bed 13, a cooling bed separator 14 and a cooling centrifugal separator 15;
The raw material bin 3 is connected with a feed inlet of the Venturi dryer 4 through a conveying device, an air inlet of the Venturi dryer 4 is connected with an air outlet at the top of the primary preheater 6, a discharge outlet at the top of the Venturi dryer 4 is connected with an inlet of the high-efficiency material separator 5, a discharge outlet at the bottom of the high-efficiency material separator 5 and an air outlet at the top of the secondary preheater 7 are connected with an inlet of the primary preheater 6 through a primary preheating pipe 16, and a discharge outlet at the bottom of the primary preheater 6 is connected with an inlet of the secondary preheater 7 and an air outlet of the roasting separator 2 through a secondary preheating pipe 17; the bottom discharge port of the secondary preheater 7 is connected with the feed port of the flowing suspension roasting furnace 1 through a roasting furnace feed pipe 18;
The upper air outlet of the flowing suspension roasting furnace 1 is connected with the air inlet of the roasting separator 2, the bottom air inlet of the flowing suspension roasting furnace 1 is connected with the air outlet of the cooling centrifugal separator 15, the bottom discharge outlet of the roasting separator 2 and the top air outlet of the secondary cooler 10 are connected with the inlet of the primary cooler 9 through the primary cooling pipe 19, the top air outlet of the primary cooler 9 is connected with the inlet of the cooling centrifugal separator 15, the bottom discharge outlet of the primary cooler 9 and the top air outlet of the tertiary cooler 11 are connected with the inlet of the secondary cooler 10 through the secondary cooling pipe 20, the bottom discharge outlet of the secondary cooler 10, the top air outlet of the quaternary cooler 12 and the top air outlet of the cooling bed separator 14 are connected with the inlet of the tertiary cooler 11 through the tertiary cooling pipe 21, the bottom discharge outlet of the tertiary cooler 11 is connected with the inlet of the quaternary cooler 12 through the quaternary cooling pipe 22, and the quaternary cooling pipe 22 is also connected with the cold air inlet pipe 39;
the bottom discharge port of the four-stage cooler 12 and the bottom discharge port of the cooling centrifugal separator 15 are connected with the inlet of the fluidized cooling bed 13, and the air outlet of the fluidized cooling bed 13 is connected with the inlet of the cooling bed separator 14;
The top gas outlet of the high-efficiency material separator 5 is connected with the inlet of the ceramic membrane denitration dust collector 8 through a denitration gas pipe 23, the bottom of the ceramic membrane denitration dust collector 8 is connected with the roasting furnace feed pipe 18, and the gas outlet of the ceramic membrane denitration dust collector 8 is connected with the ORC low-temperature waste heat power generation system 24.
The flue gas denitration dust removal system further comprises a compressed air pipe 25, an ammonia water tank 26 and a double-fluid atomization spray gun 27, wherein the compressed air pipe 25 and the ammonia water tank 26 are respectively communicated with the double-fluid atomization spray gun 27, a spray gun opening of the double-fluid atomization spray gun 27 is communicated with the denitration air pipe 23, and the ammonia water tank 26 is connected with the double-fluid atomization spray gun 27 through an ammonia water conveying pump 38.
The flue gas denitration dust removal system further comprises a preheating filter 28, an air outlet at the top of the high-efficiency material separator 5 is connected with an inlet of the preheating filter 28, an air outlet at the top of the preheating filter 28 is connected with a denitration air pipe 23, and a discharge hole at the bottom of the preheating filter 28 is connected with a feeding pipe 18 of the roasting furnace.
The air outlet of the ceramic membrane denitration dust removal device 8 is connected with an ORC low-temperature waste heat power generation system 24 through an induced draft fan 29, and the air outlet of the ORC low-temperature waste heat power generation system 24 is connected with a chimney 30; the bottom of the ceramic membrane denitration dust removing device 8 is connected with a feeding pipe 18 of the roasting furnace through a spiral ash conveyer 31.
The flow suspension roaster 1 is connected to a natural gas inlet pipe 40.
The bottom of the fluidized cooling bed 13 is connected with a fluidization air pipe 32.
The outlet of the fluidized cooling bed 13 and the outlet at the bottom of the cooling bed separator 14 are connected with a finished product output pipeline 35.
The magnetic field generating device 36 is arranged on the outer side of the lower part of the flowing suspension roasting furnace 1, the magnetic field generating device 36 is arranged above the burner of the flowing suspension roasting furnace 1, and the refractory heat insulation lining 37 is arranged in the flowing suspension roasting furnace 1 and corresponds to the magnetic field generating device 36.
The magnetic field generating device 36 is internally provided with a plurality of magnetic field generating modules, and the magnetic field generating modules are symmetrically arranged along the outer side of the flowing suspension roasting furnace 1. The working process of the invention is as follows:
The powdery raw materials are stored in a raw material bin 3, the raw materials enter a venturi dryer 4 through a conveying system, the raw materials and hot flue gas from a primary preheater 6 are fully mixed and preheated in the venturi dryer 4, then the flue gas carries the materials into a high-efficiency material separator 5, the materials are separated by the high-efficiency material separator 5 and high-temperature flue gas at the top outlet of a secondary preheater 7 are mixed in a primary preheating pipe 16 and enter the primary preheater 6 for secondary preheating and drying, the materials are separated by the primary preheater 6 and high-temperature flue gas at the outlet of a roasting separator 2 are mixed in a secondary preheating pipe 17 and enter the secondary preheater 7 for tertiary preheating and drying, and the materials fall into a flowing suspension roasting furnace 1 through a roasting furnace feeding pipe 18 for high-temperature roasting after the separation of the secondary preheater 7. The magnetic field generating device 36 at the lower part of the flowing suspension roasting furnace 1 can regulate the shape of the flame through the magnetic field, and can change the movement direction of ions or ion groups in the flame, move to the outer side of the flame, and combine with oxygen in the air to enable the combustion to be more sufficient.
The dust-containing flue gas at the air outlet of the high-efficiency material separator 5 enters a preheating filter 28 for material separation, and the separated materials enter the flowing suspension roasting furnace 1 through a roasting furnace feeding pipe 18 for high-temperature roasting. Flue gas at the gas outlet of the preheating filter 28 enters the ceramic membrane denitration dust removing device 8 through the denitration gas pipe 23; the ammonia water in the ammonia water tank 26 is sent to the double-fluid atomization spray gun 27 by the ammonia water delivery pump 38, under the action of compressed gas provided by the compressed air pipe 25, the ammonia water is sprayed into the flue at the front end of the ceramic membrane denitration dust removal device 8 through the spray gun opening of the double-fluid atomization spray gun 27, the flue gas completes denitration dust removal in the ceramic membrane denitration dust removal device 8, at the moment, the flue gas temperature is about 180 ℃, then enters the ORC low-temperature waste heat power generation system 24, the generated electric energy is used for running of equipment such as a fan and finally reaches the standard through the induced draft fan 29 and the chimney 30, and the generated electric energy is discharged after reaching the standard.
After the raw materials are roasted in the flowing suspension roasting furnace 1, the raw materials enter the roasting separator 2, the high-temperature materials separated from the roasting separator 2 and the gas at the gas outlet of the secondary cooler 10 are mixed in the primary cooling pipe 19 and enter the primary cooler 9, at the moment, the gas flow is heated by the high-temperature materials, the temperature of the high-temperature materials is reduced, the materials separated in the primary cooler 9 and the gas outlet gas flow of the tertiary cooler 11 are mixed in the secondary cooling pipe 20 and enter the secondary cooler 10, the materials and the gas are further subjected to heat exchange, the materials separated in the secondary cooler 10 and the gas outlet gas flow of the quaternary cooler 12 are mixed in the tertiary cooling pipe 21 and enter the tertiary cooler 11, the materials and the gas are subjected to heat exchange, the materials separated in the tertiary cooler 11 and the cold air in the cold air inlet pipe 39 are mixed in the quaternary cooling pipe 22 and enter the quaternary cooler 12, the materials are cooled continuously, the materials are separated in the quaternary cooler 12 and enter the fluidized bed 13, the materials are cooled continuously, the temperature of the materials is reduced to 60-80 ℃, and the materials are discharged from the finished product outlet pipe 35. The air flow at the air outlet of the primary cooler 9 enters a cooling centrifugal separator 15 for separation, the separated materials enter a fluidized cooling bed 13 for cooling, and the separated gas enters a flowing suspension roasting furnace 1 for providing air required by combustion. Part of the materials enter the cooling bed separator 14 along with the air outlet of the fluidized cooling bed 13, and enter the finished product output pipeline 35 after being separated by the cooling bed separator 14.
Example 2
As shown in fig. 1, on the basis of example 1, a cooling pipeline is provided in the fluidized cooling bed 13, and a water inlet and a water outlet of the cooling pipeline are respectively connected with a raw material bin cold water pipe 33 and a raw material bin hot water pipe 34.
The raw material bin 3 is provided with a jacket, and a water inlet and a water outlet of the jacket are respectively connected with a raw material bin hot water pipe 34 and a raw material bin cold water pipe 33.
Hot water obtained after heat exchange of the material in the fluidized cooling bed 13 and water in the cooling pipeline enters a jacket of the raw material bin 3 through a raw material bin hot water pipe 34 to preheat wet raw materials, and cooled cold water obtained in the jacket returns to the cooling pipeline of the fluidized cooling bed 13 through a raw material bin cold water pipe 33.

Claims (10)

1. The integrated device is characterized by comprising a material roasting system, a material drying system, a flue gas denitration and dust removal system, a material cooling system and an ORC low-temperature waste heat power generation system (24);
The material roasting system comprises a flowing suspension roasting furnace (1) and a roasting separator (2);
the material drying system comprises a raw material bin (3), a Venturi dryer (4), a high-efficiency material separator (5), a primary preheater (6) and a secondary preheater (7);
the flue gas denitration and dust removal system comprises a ceramic membrane denitration and dust removal device (8);
The material cooling system comprises a primary cooler (9), a secondary cooler (10), a tertiary cooler (11), a quaternary cooler (12), a fluidized cooling bed (13), a cooling bed separator (14) and a cooling centrifugal separator (15);
The raw material bin (3) is connected with a feed inlet of the Venturi dryer (4) through a conveying device, an air inlet of the Venturi dryer (4) is connected with an air outlet at the top of the primary preheater (6), a discharge outlet at the top of the Venturi dryer (4) is connected with an inlet of the high-efficiency material separator (5), a discharge outlet at the bottom of the high-efficiency material separator (5) and an air outlet at the top of the secondary preheater (7) are connected with an inlet of the primary preheater (6) through a primary preheating pipe (16), and a discharge outlet at the bottom of the primary preheater (6) is connected with an inlet of the secondary preheater (7) and an air outlet of the roasting separator (2) through a secondary preheating pipe (17); the bottom discharge port of the secondary preheater (7) is connected with the feed port of the flowing suspension roasting furnace (1) through a roasting furnace feed pipe (18);
The upper air outlet of the flowing suspension roasting furnace (1) is connected with the air inlet of the roasting separator (2), the air inlet at the bottom of the flowing suspension roasting furnace (1) is connected with the air outlet of the cooling centrifugal separator (15), the bottom discharge outlet of the roasting separator (2) and the air outlet at the top of the secondary cooler (10) are connected with the inlet of the primary cooler (9) through a primary cooling pipe (19), the air outlet at the top of the primary cooler (9) is connected with the inlet of the cooling centrifugal separator (15), the bottom discharge outlet of the primary cooler (9) and the air outlet at the top of the tertiary cooler (11) are connected with the inlet of the secondary cooler (10) through a secondary cooling pipe (20), the bottom discharge outlet of the secondary cooler (10), the air outlet at the top of the quaternary cooler (12) and the air outlet at the top of the cooling bed separator (14) are connected with the inlet of the tertiary cooler (11) through a tertiary cooling pipe (21), the bottom discharge outlet of the tertiary cooler (11) is connected with the inlet of the quaternary cooler (12) through a quaternary cooling pipe (22), and the quaternary cooling pipe (22) is also connected with the cold air inlet pipe (39);
The bottom discharge port of the four-stage cooler (12) and the bottom discharge port of the cooling centrifugal separator (15) are connected with the inlet of the fluidized cooling bed (13), and the air outlet of the fluidized cooling bed (13) is connected with the inlet of the cooling bed separator (14);
The top gas outlet of the high-efficiency material separator (5) is connected with the inlet of the ceramic membrane denitration dust collector (8) through a denitration gas pipe (23), the bottom of the ceramic membrane denitration dust collector (8) is connected with the feeding pipe (18) of the roasting furnace, and the gas outlet of the ceramic membrane denitration dust collector (8) is connected with the ORC low-temperature waste heat power generation system (24).
2. The integrated device for magnetically controlled flow suspension roasting and energy-saving power generation purification according to claim 1, wherein the flue gas denitration dust removal system further comprises a compressed air pipe (25), an ammonia water tank (26) and a double-fluid atomization spray gun (27), the compressed air pipe (25) and the ammonia water tank (26) are respectively communicated with the double-fluid atomization spray gun (27), and a spray gun opening of the double-fluid atomization spray gun (27) is communicated with the denitration air pipe (23).
3. The integrated device for magnetically controlled flow suspension roasting and energy-saving power generation and purification according to claim 1, wherein the flue gas denitration dust removal system further comprises a preheating filter (28), an air outlet at the top of the high-efficiency material separator (5) is connected with an inlet of the preheating filter (28), an air outlet at the top of the preheating filter (28) is connected with a denitration air pipe (23), and a discharge hole at the bottom of the preheating filter (28) is connected with a feeding pipe (18) of a roasting furnace.
4. The integrated device for magnetically controlled flow suspension roasting and energy-saving power generation and purification according to claim 1, wherein an air outlet of the ceramic membrane denitration dust removal device (8) is connected with an ORC low-temperature waste heat power generation system (24) through an induced draft fan (29), and an air outlet of the ORC low-temperature waste heat power generation system (24) is connected with a chimney (30); the bottom of the ceramic membrane denitration dust removal device (8) is connected with a feeding pipe (18) of the roasting furnace through a spiral ash conveyer (31).
5. The integrated device for magnetically controlled flow suspension roasting and energy-saving power generation and purification according to claim 1, wherein the bottom of the fluidized cooling bed (13) is connected with a fluidized air pipe (32).
6. The integrated device for magnetically controlled flow suspension roasting and energy-saving power generation and purification according to claim 1, wherein a cooling pipeline is arranged in the fluidized cooling bed (13), and a water inlet and a water outlet of the cooling pipeline are respectively connected with a raw material bin cold water pipe (33) and a raw material bin hot water pipe (34).
7. The integrated device for magnetically controlled flow suspension roasting and energy-saving power generation purification according to claim 6, wherein the raw material bin (3) is provided with a jacket, and a water inlet and a water outlet of the jacket are respectively connected with a raw material bin hot water pipe (34) and a raw material bin cold water pipe (33).
8. The integrated device for magnetically controlled flow suspension roasting and energy-saving power generation and purification according to claim 1, wherein the outlet of the fluidized cooling bed (13) and the outlet at the bottom of the cooling bed separator (14) are connected with a finished product output pipeline (35).
9. The integrated device for magnetically controlled flow suspension roasting and energy-saving power generation purification according to claim 1, wherein a magnetic field generating device (36) is arranged on the outer side of the lower part of the flow suspension roasting furnace (1), the magnetic field generating device (36) is arranged above a burner of the flow suspension roasting furnace (1), and a fireproof heat insulation lining (37) is arranged in the flow suspension roasting furnace (1) and corresponds to the magnetic field generating device (36).
10. The integrated device for magnetically controlled flow suspension roasting and energy-saving power generation and purification as claimed in claim 9, wherein a plurality of magnetic field generating modules are arranged in the magnetic field generating device (36), and the magnetic field generating modules are symmetrically arranged along the outer side of the flow suspension roasting furnace.
CN202410423798.4A 2024-04-10 2024-04-10 Magnetic control flowing suspension roasting and energy-saving power generation purification integrated device Active CN118031630B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000073454A (en) * 1999-05-11 2000-12-05 김학철 Thermit boiler and thermit capsule
CN201442875U (en) * 2009-07-31 2010-04-28 刘鹤群 Aluminum hydroxide suspending calcining kiln
KR20130019610A (en) * 2011-08-17 2013-02-27 최동민 Heating boiler
CN103771476A (en) * 2014-01-26 2014-05-07 郑州金阳光陶瓷有限公司 Method for producing alpha-aluminum oxide by utilizing gas-suspension roasting furnace
CN107990321A (en) * 2017-11-23 2018-05-04 云南硕力科技有限公司 Magnetic force domestic waste incineration

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000073454A (en) * 1999-05-11 2000-12-05 김학철 Thermit boiler and thermit capsule
CN201442875U (en) * 2009-07-31 2010-04-28 刘鹤群 Aluminum hydroxide suspending calcining kiln
KR20130019610A (en) * 2011-08-17 2013-02-27 최동민 Heating boiler
CN103771476A (en) * 2014-01-26 2014-05-07 郑州金阳光陶瓷有限公司 Method for producing alpha-aluminum oxide by utilizing gas-suspension roasting furnace
CN107990321A (en) * 2017-11-23 2018-05-04 云南硕力科技有限公司 Magnetic force domestic waste incineration

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Denomination of invention: Integrated device for magnetic control flow suspension roasting and energy-saving power generation purification

Granted publication date: 20240604

Pledgee: Industrial and Commercial Bank of China Co.,Ltd. Zibo High tech Branch

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