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Tail heat utilization and dust removal integrated coil-fired boiler

A coal-fired boiler, an integrated technology, applied in the field of coal-fired boilers, can solve problems such as personnel and equipment safety accidents, strong vibration, etc., and achieve reliable use, high strength, and broad application prospects

Inactive Publication Date: 2015-11-04
JISHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once part of the hardened dust is shaken off, it will immediately leave the dynamic rotation balance of the induced draft fan, and then generate strong vibration, which may cause serious personnel and equipment safety accidents

Method used

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  • Tail heat utilization and dust removal integrated coil-fired boiler
  • Tail heat utilization and dust removal integrated coil-fired boiler
  • Tail heat utilization and dust removal integrated coil-fired boiler

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Embodiment Construction

[0030] Now in conjunction with accompanying drawing, the present invention is described in further detail.

[0031] Such as figure 1 , figure 2 , image 3 and Figure 4 The exhaust heat utilization and dust removal integrated coal-fired boiler shown in the figure includes boiler main body 1, boiler exhaust pipe 3, boiler sewage pipe 2, cyclone dust removal tail heat efficient utilization device 4 and induced draft fan A, and cyclone dust removal tail heat efficient utilization device 4 consists of columns The tubular heat exchanger 6 and the cyclone dust collector 7 are superimposed. The boiler tail gas pipe 3 is connected to the cyclone dust collector 7 tangentially. Cone, evenly dispersed through the tubes, concentrated by the upper cone bucket and then discharged from the exhaust pipe 12 through the induced draft fan A; the high-level pool 13 is connected to the lower part of the 6 shell side of the tube heat exchanger, and the 6 shell side of the tube heat exchanger T...

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Abstract

The invention discloses a tail heat utilization and dust removal integrated coil-fired boiler. A boiler tail gas pipe is connected with a cyclone dust remover in the tangent direction. Dust is discharged through an air-lock valve at the cone bottom after dust removal is conducted through rotational flow. Tail gas is connected with a cone through a rotational flow ascending pipe and penetrates a tube nest after being uniformly scattered. The tail gas is discharged through a discharge pipe by means of an induced draught fan after being concentrated through a conical hopper on the upper portion. An impeller of the induced draught fan is of a structure that blades are in a hollow wedge shape. The appearance contour line of the induced draught fan is an involute. According to the tail heat utilization and dust removal integrated coil-fired boiler, boiler tail heat utilization and dust removal are innovatively integrated, an efficient cyclone dust removal tail heat utilization device is designed, and therefore tail heat utilization and dust removal are completed in one step, the device input is reduced, and the work efficiency is improved; the blades are in the hollow wedge shape, and therefore dust on the impeller of the induced draught fan is removed in real time, the strength of the impeller of the draught fan is increased, stability is enhanced, accidents caused by dust accumulation are effectively eradicated, and application prospects are wide.

Description

technical field [0001] The invention relates to a coal-fired boiler, and specifically refers to an integrated coal-fired boiler with tail heat utilization and dust removal in which the fan does not accumulate dust. Background technique [0002] Boilers are very commonly used thermal power equipment. Coal-fired boilers are still one of the main preferred equipment for heating due to mature technology and low fuel costs. However, coal-fired boilers need to Perform tail heat utilization, dust removal, harmful gas purification and other operations on the tail gas. [0003] The induced draft fan is the key equipment for coal-fired boilers to realize tail heat utilization and dust removal. Most of the induced draft fans for boilers are centrifugal fans. The continuous, stable and reliable operation of the induced draft fans is very important. Because most of the occasions where coal-fired boilers are used contain certain dust , When the induced draft fan is working, when the air ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J15/00B01D45/16B01D45/18F04D29/28F04D29/30F04D29/42
Inventor 张旭张鹏银永忠张思言张驰
Owner JISHOU UNIVERSITY
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