Double-tower ammonia desulfurization device and method for recovering sulfur resources

An ammonia desulfurization and sulfur recovery technology, which is applied in separation methods, chemical instruments and methods, ammonium sulfite and other directions, can solve problems such as difficulty in popularization, and achieve the effects of no secondary pollution, saving process raw materials, and improving purity.

Active Publication Date: 2011-12-21
ZHEJIANG UNIV
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Problems solved by technology

However, the sale of this by-product is affected by factors such as local soil conditions and crop varieties, making it difficult to promote

Method used

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  • Double-tower ammonia desulfurization device and method for recovering sulfur resources
  • Double-tower ammonia desulfurization device and method for recovering sulfur resources

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Embodiment Construction

[0019] As shown in the attached figure, the double-tower ammonia desulfurization device for recovering sulfur resources includes a power wave circulation pump 1, a power wave scrubber 2, a power wave bottom pump 3, a cyclone 4, a filter press pump 5, and a plate and frame filter press Machine 6, filtrate pump 7, ammonia water tank 8, ammonia water pump 9, primary absorption tower 10, condenser 11, primary circulation pump 12, ammonium bisulfite storage tank 13, finished product filter 14, secondary absorption tower 15, Condenser 16, secondary circulation pump 17, the flue gas enters the power wave scrubber 2, and the power wave scrubber 2 is provided with an interface for adding industrial water. After being washed by the power wave scrubber 2, the flue gas enters the primary absorption tower 10 , enter the secondary absorption tower 15 after circulating spraying and absorbing under the action of the primary circulating pump 12 and condenser 11, and discharge after circulating ...

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Abstract

The invention discloses a double-tower ammonia desulfurization device and method for recovering sulfur resources. The device includes a dynamic wave scrubber, a primary absorption tower, a secondary absorption tower, etc. After the flue gas is removed from the ash by the dynamic wave scrubber, the temperature is lowered by the dynamic wave scrubber, and the flue gas enters the primary absorption tower and the secondary absorption tower in turn. , the first-level absorption tower and the second-level absorption tower are equipped with 5 spray layers, the lower three spray layers spray and absorb the flue gas, and the upper two spray layers prevent ammonia from escaping. The absorption tower and the secondary absorption tower are discharged after spraying and absorbing. The present invention has the following advantages: 1) the purity of by-products is high; 2) the double-tower design can not only obtain higher desulfurization efficiency, but also produce high-purity by-products; 3) this process uses ammonium bisulfite as the final The by-product not only omits the process of crystallization and drying in the previous process, but also improves the added value of the by-product; 4) the process of the present invention is all recycled without secondary pollution.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a twin-tower ammonia desulfurization device and method for recovering sulfur resources. Background technique [0002] my country is a big sulfur-deficient country and needs to import a large amount of sulfur every year. The price of sulfur has increased rapidly in recent years and is currently close to 8,000 yuan per ton. On the other hand, my country's low-quality coal (stone coal) resources are quite rich, but due to the high sulfur content of low-quality coal itself, SO in flue gas after combustion 2 The concentration is high, and it is difficult to meet the environmental protection requirements by using the general calcium-based wet flue gas desulfurization technology, and the by-products of the calcium-based wet flue gas desulfurization technology have low utilization value. [0003] Since the 1970s, some countries began to study the ammonia flu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/75B01D53/50B01D47/00C01C1/22
Inventor 高翔骆仲泱岑可法倪明江张涌新吴卫红施正伦周劲松方梦祥余春江王树荣程乐鸣王勤辉
Owner ZHEJIANG UNIV
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