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Boiler with back-burning coal spreader

A coal thrower and boiler technology, applied in the field of boilers, can solve the problems of Ringelmann blackness value, waste and high coal consumption that fail to meet environmental protection requirements

Inactive Publication Date: 2003-11-05
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages of the existing coal thrower boilers, such as large dust and carbon black, which cannot meet the Ringelmann blackness value required by environmental protection, high coal consumption, poor economy, and great waste, and provide A boiler with a back-firing coal thrower equipped with an arch of the boiler furnace and a separator on the flue

Method used

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  • Boiler with back-burning coal spreader
  • Boiler with back-burning coal spreader

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Embodiment Construction

[0007] Embodiments of the present invention will be further described in conjunction with the accompanying drawings. Depend on figure 1 As shown, it includes air chamber 1, slag outlet 2, grate 3, front wall 4, furnace 6, bubble 7, superheater 8, steering chamber 9, economizer 12, air preheater 17, its characteristics Yes, there is a furnace arch 5 built in the furnace 6, a separator 10 is built in the steering chamber 9, and a recycling device is installed at the bottom of the separator 10. The built-in furnace arch in the furnace can be a front arch, a rear arch or a front and rear arch. What is set in this embodiment is a front arch 5, which is installed on the front wall 4 of the furnace 6 of the main body of the coal thrower. The front wall of the common coal thrower boiler furnace is generally equipped with a water-cooled wall. The front wall of the present embodiment The arch replaces the water-cooled wall and is installed at the original water-cooled wall. The end po...

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Abstract

The present invention is energy-saving environment-protecting boiler with back-burning coal spreader. It includes air chamber, slag hole, fire grate, front wall, hearth, vapor bubble, overheater, steering chamber, coal economizer and air preheater; and it features the hearth with one inside furnace arch, the steering chamber with separator and the material backing unit below the separator. The furnace arch has the functions of raising the burning temperature inside the hearth, capturing partial flyash particles and increasing the disturbance inside the furnace. The separator has the functions of separating out unburnt carbon containing flyash and feeding it to fire grate for burning via back of furnace. The present invention has the advantages of high burning temperature, high burningefficiency and less pollution.

Description

technical field [0001] The invention relates to an energy-saving and environment-friendly boiler with a back-fired coal thrower, which belongs to the field of boilers. Background technique [0002] The existing coal thrower boiler is to throw coal mechanically into the furnace for combustion. Under normal circumstances, about 50% of the small-particle coal is floating in the air and burned with the flue gas flow, and is discharged into the chimney from the tail of the boiler by the induced draft fan, and the remaining large-particle coal is burned on the grate. Arrangement characteristics, so the grate is inverted. Due to the semi-suspension combustion method, the boiler has the advantages of strong adaptability to coal types, fast start-up, and large load adjustment ratio. The disadvantage is that the semi-suspended combustion leads to high content of fly ash in the smoke, the blackness of the smoke is large, it is easy to emit "black smoke", and the pollution is serious....

Claims

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Application Information

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IPC IPC(8): F23K3/18F24H1/34
Inventor 张忠孝
Owner UNIV OF SHANGHAI FOR SCI & TECH
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