CN101957136B - High-temperature and high-pressure air flow forced cutting diffusion powder calcining treatment system - Google Patents
High-temperature and high-pressure air flow forced cutting diffusion powder calcining treatment system Download PDFInfo
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- CN101957136B CN101957136B CN2009101596124A CN200910159612A CN101957136B CN 101957136 B CN101957136 B CN 101957136B CN 2009101596124 A CN2009101596124 A CN 2009101596124A CN 200910159612 A CN200910159612 A CN 200910159612A CN 101957136 B CN101957136 B CN 101957136B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
Abstract
The invention discloses a powder material calcining treatment system, in particular a 'high-temperature and high-pressure air flow forced cutting diffusion powder calcining treatment system', which is characterized in that: elements taking a blow pipe, a collector, a feeding cabin, a feeding device, a high-temperature and high-pressure air flow pipe, a flame-isolating gas heating furnace, an air compressor and the like as a core are combined; the respective functions of the core elements are used in combination to produce an overall effect; and thus, a powder material calcining treatment unit is formed. In the device of the system, the calcining treatment of the powder material is limited to the high-temperature blow pipe, and the powder material fed into the high-temperature blow pipe is subjected to forced cutting and diffusion by a high-temperature and high-pressure air flow and therefore reach a heat balance instantly within less than 0.1 second. A plurality of units are combined for completing a process from preheating to final decomposition of the powder material, so the aim of high-efficiency, energy-saving and quick calcining treatment is fulfilled. The device of the system can be used for calcining various metal and nonmetal powdered minerals, particularly powdered calcium carbonate, for reducing the unit product energy consumption and calcining decomposition time.
Description
Technical field
This patent relates to an energy-efficient powder material calcination processing technology promptly: high-temperature high-pressure air flow is forced cutting diffusion powder calcination treating system.
Background technology
Commercial production need be carried out the situation of calcination processing in a large number to material, like the calcination processing of nonmetal mineralising things such as cement, calcium carbonate, gypsum, talcum, and the oxidation of metal and metal mineralizer, reduction calcining or the like.Achievement in research and production practices show that the fine particle material specific surface area is big, and heat transfer coefficient is also big.Under the situation that the calcination product quality requirements allows, material is carried out thinning processing before calcination processing, change its physics and chemical property through calcining again, can reach good energy-saving effect.But because the characteristic limitations of powder material; The technological pneumatic floating calcining of existing powder material calcination processing, the calcining of rotary type fluidization bed etc. like fluid bed suspension calcining, cement nsp kiln pattern, they exist many limitation mainly to show to the calcination processing of powder material; 1, present gas suspension and fluidized suspension are technological; For material is fully spread and suspended motion in specific space; Except the main air that guarantees completing combustion; Have in system, be pressed into excess air and guarantee operational factors such as gas-solid ratio, the drawback of also bringing energy consumption to increase considerably thus.2, for making material carry out heat exchange with thermal source better; Material is directly joined (like the predecomposition of cement slurry) in the heat supply combustion gas; Can improve the thermal efficiency though do like this; But be difficult to avoid the cross pollution of the material and the fuel that adopts, the calcination product quality descended even can not use (like the calcining of white cement), the influence of calcination product quality has greatly been limited the selection to fuel band again for avoiding fuel.3, with the calcining manners of big flow combustion gas diffusion and suspension powder material, in most cases the specific energy consumption index is difficult to descend.For guarantee that system and device moves under suitable gas-solid parameter, strict to the designing requirement of equipment glassware.Simultaneity factor operation under big flow gas also can increase the complexity of collecting with exhaust system, causes the expansion of system equipment cost of investment.
Summary of the invention
The present invention breaks through defective and the limitation acquisition of technology that overcomes conventional powder material calcination processing technology.
Core feature of the present invention is: system and device by blow-off pipe, gatherer, add the calcination processing device that core devices such as feed bin, charging gear, high-temperature high-pressure air flow pipe, muffle gas heating stove, air compressor constitute a unit.According to the needs of calcining materials different qualities, system can connecting and composing by one or more unit.
Technical characterstic is: hot combustion gas of kiln and isolated the taking their own roads of material are not disturbed mutually.For the cleaning completing combustion of fuel creates good conditions, and the diversity of selecting for fuel is created prerequisite.
Adopt the HTHP thermal current of muffle heating in the hot blow-off pipe of height, powder material to be forced cutting, diffusion; Material only needs 0.1 second left and right sides time just to reach thermal balance; Make material calcining decomposition reaction gas consumption few; Heat exchange is quick, avoids overflow gas to feed the energy loss that kiln brings, and reaches the effect of energy-efficient processing.
Because powder material is accomplished in special space and is forced diffusion and high efficient heat exchanging, need not the large capacity equipment glassware and guarantees system operational parameters.Thereby saving equipment investment cost.Because the calcination reaction of material mainly is limited in completion fast in the high hot blow-off pipe, the characteristics of " moment accomplishes promptly and breaks away from " are arranged simultaneously,, the calcination product quality is significantly improved so greatly avoided phenomenons such as material underburnt, burning.This is the distinguishing feature that conventional calcine technology is difficult to reach.
In multiunit system, the comprehensive reutilization of system and device reasonable distribution master supplying heat source, auxiliary heat supplying thermal source and waste heat flue gas makes the thermal source utilization more abundant, and efficient is higher.Present technique also can greatly shorten the unit product calcination time when reducing energy consumption of unit product, increase substantially production efficiency.
Description of drawings
What accompanying drawing provided is the process system that three unit combination connect.Individual unit constitutes by being positioned at the device of accompanying drawing bottom with mark.
1, blow-off pipe 2, gatherer 3, add the hot exhanst gas outlet of feed bin 4, charging gear 5, high-temperature high-pressure air flow pipe 6, muffle gas heating stove 7, air compressor 8, muffle gas heating stove 9, tail gas heat exchanger.
Connect compound mode: blow-off pipe material outlet end is connected with the gatherer inlet, and blow-off pipe material inlet end is connected with charging gear, the jet end of high-temperature high-pressure air flow pipe.The high-temperature high-pressure air flow pipe places the roof of the furnace of muffle gas heating stove with blow-off pipe, is heated by the muffle gas heating stove.Charging gear top connects and adds feed bin.Heat exchanger is equipped with in the outlet of gatherer tail gas.Gases at high pressure through the high-temperature high-pressure air flow pipe are squeezed into from the air intake end of high-temperature high-pressure air flow pipe by air compressor machine.Be thus connected compound mode and constitute the unit calciner plant.
The specific embodiment
System by the combination of core devices and core devices separately the formed population effect of function fit applications constitute unit calcination processing device.The material characteristic of calcination processing as required, system can connect combination by a unit or multiple-unit accomplish the calcination processing to material.In multiple unit system, unit calcination processing device is combined into the preheating device and the end reaction device of system respectively.The unit that is positioned at the system bottom is the end reaction device.Each unit that is positioned at end reaction device unit top is a preheating device; This moment, the muffle gas heating stove of each unit was interconnected; The muffle gas heating stove of preheating device is introduced the waste heat flue gas of main supplying heat source through the hot exhanst gas outlet of end reaction device, and the muffle gas heating stove of each preheating device becomes auxiliary oven on function.With end reaction device by utilizing waste heat cigarette; Mode with the muffle heating heats preheating with pressure-air and blow-off pipe housing; Be heated to the gases at high pressure that are fit to temperature; Rely on the material inlet end of compression pump to the pre-heating system blow-off pipe of air compressor, blow-off pipe material outlet end links to each other with gatherer, and the normal temperature powder material is pressed in the blow-off pipe of a preheating device by feeding device; The process that the high-temperature high-pressure air flow of being come by the air compressor pump cuts rapidly, spreads is accomplished heat exchange fast, makes normal temperature powder material moment reach thermal balance.Because powder material is accomplished heat exchange in HTHP thermal current cutting, the diffusion in the hot blow-off pipe of height, so thermal losses is extremely low and heat exchange efficiency is high.Material after preheating is collected device from the blow-off pipe ejection and collects, and tail gas is separated by gatherer.The hot blast that comes out from tail gas heat exchanger; Be introduced in the gas muffle heating furnace of secondary preheating device; With the hot combustion gas mixing of secondary preheating device gas muffle heating furnace, when jointly secondary preheating gases at high pressure being carried out the muffle heating, also secondary preheating blow-off pipe housing is directly heated.Through the powder material of a preheating after collecting; Be pressed into the blow-off pipe of secondary preheating device by feeding device; By high-temperature high-pressure air flow cutting and diffusion again in the blow-off pipe of the hot state of height; This moment, the powder material temperature was promoted to partial reaction or the preceding critical condition of end reaction; Get into the end reaction device at last through the material of pre-heating temperature elevation repeatedly and carry out final calcination reaction and handle, the gatherer of end reaction device can be considered " stewing material " reactor and takes in the collection separator concurrently, and powder material comes out to become satisfactory calcination product from the end reaction separator.Calciner plant for the material that only needs once calcining promptly to accomplish decomposition reaction is made up of individual unit is accomplished.Waste heat as calcination product is carried reclaims, can be to the heating furnace air feed of system and device or to factory's life heat supply.
Native system device process is smooth; Main burning fume and material are isolated, calcining heat flexible and controllable, processing procedure are efficient accomplishs without any letup fast; Unit combination is the amount doesn't matter, and the full-automatic operation of process is the ideal equipment of powder material low consumption, quick, efficient calcination processing.Can carry out calcination processing to multiple metal, non-metallic powder material, be particularly suitable for the calcination processing of powder materials such as calcium carbonate, calcium sulphate dihydrate.
Claims (1)
1. a high-temperature high-pressure air flow is forced cutting diffusion powder calcination treating system; Said system by blow-off pipe, gatherer, add feed bin, charging gear, high-temperature high-pressure air flow pipe, muffle gas heating stove, air compressor and heat exchanger and form; Wherein blow-off pipe material outlet end is connected with the gatherer inlet; Blow-off pipe material inlet end is connected with charging gear, the jet end of high-temperature high-pressure air flow pipe; The high-temperature high-pressure air flow pipe places the roof of the furnace of muffle gas heating stove with blow-off pipe; Heated by the muffle gas heating stove, charging gear top connects and adds feed bin, and heat exchanger is equipped with in the outlet of gatherer tail gas; Gases at high pressure through the high-temperature high-pressure air flow pipe are squeezed into from the air intake end of high-temperature high-pressure air flow pipe by air compressor; Utilize high-temperature high-pressure air flow to force cutting diffusion powder calcination treating system that the powder material calcination reaction is limited in the specific space of blow-off pipe and carry out, the material in the blow-off pipe is forced cutting, diffusion, reach the moment heat exchange through the high-temperature high-pressure air flow of muffle heating; The efficient purpose of powder material being carried out calcination processing of accomplishing fast, the indication HTHP is for surpassing high temperature Celsius 500 ℃ and the pressure that surpasses 300kpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101596124A CN101957136B (en) | 2009-07-18 | 2009-07-18 | High-temperature and high-pressure air flow forced cutting diffusion powder calcining treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101596124A CN101957136B (en) | 2009-07-18 | 2009-07-18 | High-temperature and high-pressure air flow forced cutting diffusion powder calcining treatment system |
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| Publication Number | Publication Date |
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| CN101957136A CN101957136A (en) | 2011-01-26 |
| CN101957136B true CN101957136B (en) | 2012-07-25 |
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| CN2009101596124A Expired - Fee Related CN101957136B (en) | 2009-07-18 | 2009-07-18 | High-temperature and high-pressure air flow forced cutting diffusion powder calcining treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8967490B2 (en) * | 2011-01-28 | 2015-03-03 | Trane International Inc. | Wear-leveling for components of an auxiliary heat source |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3452968A (en) * | 1966-10-12 | 1969-07-01 | Ishikawajima Harima Heavy Ind | Roasting process of fine ore and a device therefor |
| CN87204243U (en) * | 1987-05-21 | 1987-12-31 | 喻名祥 | Gypsum powder calciner with a flowing-bed |
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2009
- 2009-07-18 CN CN2009101596124A patent/CN101957136B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3452968A (en) * | 1966-10-12 | 1969-07-01 | Ishikawajima Harima Heavy Ind | Roasting process of fine ore and a device therefor |
| CN87204243U (en) * | 1987-05-21 | 1987-12-31 | 喻名祥 | Gypsum powder calciner with a flowing-bed |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平9-12347A 1997.01.14 |
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| CN101957136A (en) | 2011-01-26 |
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Granted publication date: 20120725 Termination date: 20130718 |