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Tail heat recovery and dust removal integrated coal-fired boiler

A coal-fired boiler and exhaust heat recovery technology, applied in the field of coal-fired boilers, can solve problems such as personnel and equipment safety accidents, strong vibration, etc., and achieve the effects of reliable use, high strength, and easy production

Active Publication Date: 2015-10-28
YANGZHOU SUNLIGHT MACHINERY
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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 recovery and dust removal integrated coal-fired boiler
  • Tail heat recovery and dust removal integrated coal-fired boiler
  • Tail heat recovery and dust removal integrated coal-fired boiler

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Embodiment Construction

[0033] Now in conjunction with accompanying drawing, the present invention is described in further detail.

[0034] like figure 1 , figure 2 , image 3 and Figure 4The tail heat recovery and dust removal integrated coal-fired boiler shown in the figure includes boiler body 1, boiler tail gas pipe 3, boiler sewage pipe 2, cyclone dust removal tail heat high-efficiency recovery device 4 and induced draft fan A, and cyclone dust removal tail heat high-efficiency recovery 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 The upper...

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Abstract

The invention discloses a tail heat recovery and dust removal integrated coal-fired boiler. A boiler exhaust pipe is in tangential connection with a cyclone dust collector, dust is exhausted from a cone bottom through an air-lock valve after cyclone de-dusting, and exhaust enters a cone through a cyclone riser, passes through a tube nest after being uniformly dispersed, and is discharged by an exhaust pipe through an induced draft fan after being centralized by an upper tapered hopper; an impeller of the induced draft fan adopts the structure that blades are shaped like hollow reversed water droplets and a back plate is dish-shaped; the contour line of the induced draft fan is an involute. The tail heat recovery and dust removal integrated coal-fired boiler creatively integrates boiler tail heat recovery and dust removal, and a cyclone dust removal efficient tail heat recoverer is designed to complete tail heat recovery and dust removal in one step, so that the equipment investment is reduced and the working efficiency is improved; as the structure that the blades are shaped like hollow reversed water droplets and the back plate is dish-shaped is adopted, dust on the impeller of the induced draft fan can be cleaned in real time, the impeller strength of the induced draft fan is improved, the stability is enhanced, safety accidents caused by dust accumulation are effectively prevented, and the application prospect is 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 recovery 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 Carry out tail heat recovery, 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 recovery 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 flow pa...

Claims

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Application Information

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IPC IPC(8): F23J15/00B01D45/12F04D29/28
Inventor 张旭张鹏银永忠张思言张驰
Owner YANGZHOU SUNLIGHT MACHINERY
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