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Energy-saving environment protection apparatus for drying and producing chemical gypsum powder by using tail gas

An energy-saving and environment-friendly gypsum powder technology, which is applied in the field of energy-saving and environment-friendly devices for the production of gypsum powder, can solve the problems of high energy consumption for calcination and environmental pollution caused by dust, and achieve the effects of large contact area, energy saving and cost reduction

Active Publication Date: 2009-10-07
蚌埠百佳新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an energy-saving and environment-friendly device for producing chemical gypsum powder by drying tail gas in order to overcome the defects of high energy consumption and dust pollution of gypsum drying and calcination

Method used

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  • Energy-saving environment protection apparatus for drying and producing chemical gypsum powder by using tail gas
  • Energy-saving environment protection apparatus for drying and producing chemical gypsum powder by using tail gas

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Embodiment Construction

[0018] Such as figure 1 and figure 2 As shown, the gypsum powder drying device includes a rotary frying pan 1 and a furnace 16, the rotary frying pan 1 is provided with an auger conveyor 3, a trough is provided under the auger conveyor, and an exhaust gas collection pipe 8 is provided at the end of the furnace 16 , the tail gas collection pipe 8 is provided with a tail gas dust collector 9, and the front end of the rotary frying pan is provided with a water vapor collection pipe 2, and the tail gas collection pipe 8, the water vapor collection pipe 2 and the feeding mechanism are respectively connected with three interfaces at one end of the pulse drying pipe 10, and the pulse The end of the drying pipe 10 is also provided with an intensifier 7; the other end of the pulse drying pipe 10 is connected to a cyclone dust collector 11, and one end of the cyclone dust collector 11 is provided with a feeding pipe connected to the auger conveyor 3, and the other end is Connect with ...

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Abstract

The present invention relates to an energy-saving environment protection apparatus for drying and producing chemical gypsum powder by using tail gas, including a circumversion frying pan (1) and a hearth box (16), wherein the circumversion frying pan is provided with a packing auger feeder (3), characterized in that a tail gas collecting tube (8) is connected with one end of a impulse drying tube (10), the other end of the impulse drying tube (10) is connected with a cyclonic collector (11), a feed end of the cyclonic collector (11) is connected with the packing auger feeder (3), and an exhaust end of the cyclonic collector (11) is connected with a draught fan (14). The beneficial effect of the apparatus is that the gypsum raw material is dried by using the high-temperature tail gas and aqueous vapour generated by the circumversion frying pan. The gas drying contact area is large, and the thermal efficiency is high. The tail gas contains microparticle flue dust which may play a function of the activated carbon to remove yellow, so that the white content of the gypsum powder is improved. The tail gas and the aqueous vapour is purified by a dedusting environment protection apparatus, thus the pollutant will be not discharged outside, and the environment protection effect is good.

Description

technical field [0001] The invention relates to an energy-saving and environment-friendly device for producing gypsum powder, in particular to an energy-saving and environment-friendly device for producing chemical gypsum powder by drying tail gas. Background technique [0002] The main component of building gypsum is hemihydrate gypsum (CaSO 4 1 / 2H 2 O), the gypsum raw material can be natural gypsum or chemical gypsum (desulfurization gypsum, citrate gypsum, phosphogypsum), and the free water content of chemical gypsum is 15%-30%. To produce hemihydrate gypsum, the energy consumption of chemical gypsum is higher than that of natural gypsum during the drying and calcination process. The standard coal consumption of natural gypsum is 70-80 kg / ton, that of desulfurized gypsum is 110-120 kg / ton, and that of citric acid gypsum is 120-140 kg / ton. The temperature of the exhaust gas generated in the chamber of the rotary frying boiler is about 300°C, while the temperature of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B11/028
Inventor 张绪庆
Owner 蚌埠百佳新型建材有限公司
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