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A ring-shaped partition wall recovery system and method for waste heat of rotary kiln products calcined with pellets

A recovery system and rotary kiln technology, which is applied in the field of waste heat annular partition wall recovery system for pellet calcined rotary kiln products, can solve the problems of easy corrosion of cooling equipment, low efficiency of waste heat utilization, and waste of cooling water, etc., to improve waste heat Utilization efficiency, improvement of combustion efficiency, and effect of increasing waste heat recovery

Active Publication Date: 2016-10-05
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the disadvantages of the prior art, such as low utilization efficiency of waste heat in the pellet calcining rotary kiln, waste of a large amount of cooling water, easy corrosion of cooling equipment and poor operating environment, and to provide a circular partition wall for the waste heat of the pellet calcining rotary kiln. The recycling system and method achieve the goals of improving the utilization efficiency of waste heat in the rotary kiln, reducing the consumption of cooling water, reducing the probability of cooling equipment being corroded and improving the operating environment

Method used

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  • A ring-shaped partition wall recovery system and method for waste heat of rotary kiln products calcined with pellets
  • A ring-shaped partition wall recovery system and method for waste heat of rotary kiln products calcined with pellets
  • A ring-shaped partition wall recovery system and method for waste heat of rotary kiln products calcined with pellets

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Embodiment 1

[0053] Such as figure 1 As shown, the pellet calcined rotary kiln product waste heat annular partition wall recovery system in this embodiment includes a burner 1, a combustion chamber 2, a rotary kiln 3, a discharge port 8, a cooling cylinder bearing seat 11, a cooling cylinder driving wheel 15 and Cooling cylinder 16. The burner 1 generates a combustion flame in the combustion chamber 2. The high-temperature flue gas generated by the combustion flame enters the rotary kiln 3 and calcines the pellets in the rotary kiln 3. The calcined pellets flow out from the discharge port 8 to the inlet of the cooling cylinder 16. feed port. There are two cooling cylinder bearing seats 11, and the cooling cylinder 16 is obliquely installed on two cooling cylinder bearing seats 11 of different heights. 16, the cooling cylinder bearing seat 11 at the discharge port, so that the height at the inlet of the cooling cylinder 16 is higher than the height at the discharge port of the cooling cyl...

Embodiment 2

[0103] The pellet calcined rotary kiln product waste heat annular partition wall recovery system in this embodiment is basically the same as that in Embodiment 1, the difference is that in order to ensure that the pellets are fully cooled below the specified temperature, a spray is provided above the low temperature section Device 7, the spraying device 7 is a cooling water spraying device, and the spraying device 7 includes a row of cooling water pipes with uniform round holes on the sides, the cooling water flows down from the round holes on the side of the cooling water pipes, and is sprayed on the surface of the low temperature section , to lower the temperature of the low-temperature section, so that the pellets are further cooled.

Embodiment 3

[0105] The waste heat annular partition wall recovery system for pellet calcined rotary kiln products in this embodiment is basically the same as that in Embodiment 1, the difference is that the inner surface of the heating section 602 of the air supply pipe is welded with ribs 6021 at equal intervals along the circumference, Specifically, the number of ribs 6021 in this embodiment is 15, and the height of each rib 6021 is 55 mm; the swing frequency of the movable jaw 903 in this embodiment is 3 times / second, and the movable jaw 903 and the fixed jaw 903 are in the swing process. The distance between the jaws 902 is controlled at 35mm; the length of the high-temperature section cover 10 is 1500mm, and the length of the middle-temperature section cover 14 is 3000mm; The outer diameter of 16 is 60 mm, and the inner diameter at both sides of the upper cover body expansion section 1401 of the middle temperature section cover body 14 is larger than the outer diameter of the cooling ...

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Abstract

The invention discloses a product waste heat ring-shaped partition-type recovery system and method for a pellet calcining rotary kiln, and belongs to the technical field of rotary kiln product waste heat recovery technology. The recovery system comprises a ring-shaped partition heat exchange mechanism and a blast tube heat exchange mechanism. Both a high temperature segment hood body and a middle temperature segment hood body are cylinders with openings at two ends, both internal diameters of high temperature segment hood body and the middle temperature segment hood body are greater than the external diameter of a cooling cylinder, the high temperature segment hood body sleeves on a high temperature segment, and the middle temperature segment hood body sleeves on a middle temperature segment. The blast tube heat exchange mechanism comprises a blast tube, the blast tube comprises a blast tube holding segment and a blast tube heating segment, the blast tube heating segment is disposed in the cooling cylinder, an outlet of the blast tube heating segment comes out of a feed inlet of the cooling cylinder, and the outlet of the blast tube heating segment communicates with an air inlet of a burner through a pipe. According to the product waste heat ring-shaped partition-type recovery system and method for the pellet calcining rotary kiln, the efficiency of waste heat utilization of a rotary kiln is raised, the consumption of cooling water is reduced, the probability that a cooling device is corroded is reduced, and the operation environment can be improved.

Description

technical field [0001] The invention relates to the technical field of waste heat recovery of rotary kiln products, and more specifically relates to an annular partition wall recovery system and method for waste heat of rotary kiln products calcined with pellets. Background technique [0002] Rotary kiln calcination is the main process for the production of bioceramic filter materials. Its function is to dry and sinter the raw materials (that is, spherical particles made of clay and fly ash) produced by filter materials. Among them, the drying section is used to eliminate The moisture contained in the ceramic filter material, the sintering section is calcined to make the filter material pellets reach the strength and hardness requirements required for industrial applications. [0003] In the existing bioceramic filter material production process, the rotary kiln is used as its main calcining equipment. The combustion system supplies heat into the rotary kiln in the form of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D17/00
CPCY02P10/25Y02P80/15
Inventor 陈光王双孙蓉张西和闫丹王恒达
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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