Dry Roasting Equipment---Tunnel Roasting Kiln---Straight Tunnel Kiln---Masonry Tunnel Kiln
Xi'an Research and Design Institute of Wall & Roof Materials Co,.Ltd.- Ref Price:
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- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 m²
- Supply Capability:
- 50 m²/month
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Tunnel roasting kiln can be divided into straight tunnel kiln (with kiln car) and mobile rotary tunnel kiln (without kiln car). Straight tunnel kilns can be further divided into masonry tunnel kilns and prefabricated tunnel kilns in terms of construction methods. The mobile rotary tunnel kiln belongs to the assembled tunnel kiln.
Straight Tunnel Kiln:
(1) Main products: sintered bricks, common bricks, porous bricks, hollow bricks/blocks, roof tiles, hollow wall panels.
(2) According to the different output, the inner width of the tunnel kiln is divided into the following types:
① the inner width is 3.6 and 3.7 meters, suitable for daily output of 150,000-200,000 blocks, and annual output of 50-66 million (common bricks)
② the inner width is 4.6 and 4.8 meters, suitable for daily output of 210,000-250,000 blocks, and annual output of 69-82 million (common bricks)
③ the inner width is 5.4 and 5.6 meters, suitable for daily production of 260,000-300,000 pieces, and annual output of 85-100 million (common bricks)
④ the inner width is 6.9 and 7.2 meters, suitable for daily output of 310,000-400,000 blocks, and annual output of 102-132 million (common bricks)
⑤ the inner width is 9.2 and 9.4 meters, suitable for daily output of 600,000-620,000 pieces, and annual output of 165-200 million (common bricks)
(3) Kiln Body Structure
Masonry Tunnel Kiln:
The kiln wall is a composite wall, and the innermost layer is the working layer in contact with the high temperature. It is usually built with refractory materials (common bricks can be sintered below 600°C). The materials, grades and specifications of the refractory materials used are determined according to the firing temperature of the kiln. The middle layer is the thermal insulation layer, which is composed of various lightweight thermal insulation materials. The selected lightweight thermal insulation materials should not only provide thermal insulation, but also maintain long-term safe use without damage. The outermost layer is a load-bearing protective layer, which is multi-purpose sintering. This layer is mostly built with sintered common bricks and porous bricks to protect the lightweight thermal insulation material from damage and to bear the load of the kiln roof and the transverse thrust of the vault.
The roof of the kiln is a composite kiln item, which is hoisted on site. Commonly used kiln roof structures are refractory fiber module + refractory fiber blanket + sealed castable + steel beam; clay refractory slab + high alumina hanger + refractory fiber blanket + sealed castable + steel beam; light mullite Brick + high-aluminum hanging column + refractory fiber blanket + sealing castable + steel beam.
(4) Firing temperature: 950-1050℃
(5) Firing cycle: 26-40h
(6) Length of tunnel kiln: 110-170m
(7) Length and size of kiln car: It is determined according to the size of the billet stack and the internal and external combustion method. The length and size of the commonly used kiln car are: 3600mm, 3900mm, 4100mm, 4200mm, 4350mm, 4800mm, etc.
(8) Firing method: all internal combustion roasting; all external combustion roasting; combined internal and external combustion roasting.
(9) The roasting kiln is often equipped with a smoke exhaust system, a combustion system, a waste heat system, a backburning system, a cooling system, and a bottom pressure balance system. Each system consists of fans, pipes and regulating valves. The kiln has a large section, high output, small temperature difference between sections, and good thermal insulation performance. Computer automatic monitoring and control system to ensure the stability of thermal parameters and roasting quality
- Q:What is the best drying equipment?
- After the wet air is withdrawn from the inclined duct beneath the baking tray, a portion of the wet air is discharged from the oven through the centrifugal fan.
- Q:Frozen sublimation drying equipment which consists of several systems
- the vacuum system: by the freeze-drying room, condenser, vacuum valves and pipes, vacuum equipment and vacuum instrument composition, the current vacuum equipment is extremely combination of three: the Roots pump, cryogenic condenser, and multi-stage steam ejector, which , Multi-stage steam ejector structure is simple, no mechanical power, easy maintenance, low failure rate, the material requirements are not high, usually need to set 4-5 level.
- Q:How to choose the right drying equipment and drying technology
- In the drying process of materials, different materials are not the same characteristics, drying requirements are not the same, drying methods are also different, how to choose the right drying equipment and it?
- Q:What are the common types of dryers?
- Roller scraper dryer is through the rotation of the cylinder, in a heat conduction way, will be attached to the outer wall of the cylinder liquid material or ribbon material, dry a continuous operation of equipment to be dry treatment of liquid from the high
- Q:The working principle of belt dryer
- For dehydrated vegetables, the general use of three devices in series, the formation of early dry section, the middle section and the final section. In the early dry section, due to high water content of materials. Poor ventilation, so the use of a smaller thickness of the shop material, faster running speed and higher drying temperature. In the early dry section, the dry gas temperature can be as high as 120oC or more. The length of the material in the final section is 3-6 times of the initial dry section, and the thickness of the material is 2-4 times of the initial dry section.
- Q:What is a combination of drying equipment?
- Recently, a combination of different drying methods and different drying principles has been widely used, and a drying device capable of exerting their own advantages and making up their respective shortcomings.
- Q:How to solve the dryer a series of failures
- The dew point reading can help to find some problems, so the dry air dew point value should be monitored throughout the drying process. Dryer normal operation of the dew point reading should be 20of ~ 50of within a straight line, of course, the replacement of the dryer caused by small fluctuations are normal. If the dryer is operating normally, the dew point at the dry air inlet should be at least 30of lower than the dew point at the return air outlet.
- Q:The development prospects of the dryer
- As an air compressor post-processing equipment, cold and dry machine is only a single auxiliary machine. But with the technological progress, the industrial sector on the gas quality requirements are getting higher and higher, cold and dry machine market will be more and more, it can be said, as long as the air compressor in the development of cold and dry machine prospects will be more and more it is good.
- Q:What are the types of drying equipment?
- the drying medium, the thermal efficiency is high, the product is not polluted, but the drying capacity by the metal wall heat transfer area limit, the structure is also more complex, often in vacuum operation; radiation dryer is the use of various radiation Emitting a certain wavelength range of electromagnetic waves, the wet material surface is selectively absorbed into heat after the dry; dielectric dryer is the use of high-frequency electric field effect, so that the wet material inside the thermal effect of drying
- Q:What are the basic types of common drying equipment?
- (3) drum scraper dryer drum scraper dryer is through the rotation of the cylinder, heat conduction way, will be attached to the outer wall of the cylinder liquid material or ribbon material, a dry continuous operation of equipment The The material to be dried is passed from the upper tank into the receptacle of the drum dryer. The drying drum is driven at the specified speed by the drive.
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Dry Roasting Equipment---Tunnel Roasting Kiln---Straight Tunnel Kiln---Masonry Tunnel Kiln
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 m²
- Supply Capability:
- 50 m²/month
OKorder Service Pledge
OKorder Financial Service
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