Ash-slag cooling and sorting device and circulating fluidized bed boiler using same

A circulating fluidized bed, ash and slag cooling technology, applied in fluidized bed combustion equipment, solid separation, chemical instruments and methods, etc., can solve problems such as water leakage, slag leakage, etc. Good performance, the effect of restricting dust pollution
CN101900344AInactive Publication Date: 2010-12-01刘柏谦 +1
3 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
刘柏谦
Publication Date
2010-12-01
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a device for cooling high-temperature ash and slag of a circulating fluidized bed boiler, and belongs to the high-temperature ash and slag cooling field of the circulating fluidized bed boiler. The device consists of a hot ash sorting mechanism, a roller slag cooler and a fluidized bed heat exchanger. The hot ash from a slag discharge pipe of the circulating fluidized bed boiler is divided into large granules and small granules through the hot ash sorting mechanism, wherein the large granules enter the roller slag cooler through an inlet pipe of the roller slag cooler; and the small granules enter the fluidized bed heat exchanger through an inlet pipe of the fluidized bed heat exchanger to discharge heat and then are returned to a hearth of the circulating fluidized bed boiler along with fluidized air through an outlet pipe. The device has the advantage of fully exerting the technical advantages of an air-water combined cooling fluidized bed slag cooler and the roller slag cooler by high-temperature separation of the hot ash. Through the technical route that the hot ash is cooled according to the sizes respectively, the fine ash is returned to the hearth through the fluidized bed slag cooler and the crude slag is cooled for other use, the dust pollution of the roller slag cooler is effectively restricted. The graded cooling of the granules can effectively reduce the volume of the slag cooler, and is convenient for boiler design and boiler operation.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field:

[0001] The invention belongs to the field of circulating fluidized bed boiler high-temperature ash cooling, and provides a cooling device for circulating fluidized bed boiler high-temperature ash. Background technique:

[0002] The slag cooler (including the slag cooler with heating surface) itself is a process-specific heat exchange device. Unlike surface heat exchangers, most of the heat exchange surfaces of the slag cooler are in contact with high concentrations of solid particles for heat exchange. The resulting heat transfer effect is stronger than non-contact heat transfer.

[0003] According to the cooling principle, the type of slag cooler can be divided into non-mechanical type and mechanical type. Non-mechanical slag coolers mainly include air-water-cooled fluidized slag coolers and air-trough slag coolers. The main forms of mechanical slag coolers are water-cooled auger type, water-cooled drum type and high-strength steel belt type. At present...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More