Twin tower type recovering sulfur resource ammonia desulfuration equipment and method

A technology for ammonia desulfurization and sulfur recovery, applied in the direction of separation methods, chemical instruments and methods, ammonium sulfite, etc., can solve problems that are difficult to popularize, achieve no secondary pollution, save process raw materials, and increase added value Effect

Active Publication Date: 2010-05-19
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Twin tower type recovering sulfur resource ammonia desulfuration equipment and method
  • Twin tower type recovering sulfur resource ammonia desulfuration equipment and method

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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 twin tower type recovering sulfur resource ammonia desulfuration equipment and a method. The equipment comprises a dynamic wave washing tower, a primary absorption tower, a secondary absorption tower and the like; the exhaust gas passes through the dynamic wave washing tower to remove ash and passes through a dynamic wave washer to lower the temperature, and then enters the primary absorption tower and the secondary absorption tower in sequence; the primary absorption tower and the secondary absorption tower are both provided with five spraying layers; the lower three spraying layers spraying and absorbing the exhaust gas; the upper two spraying layers are used for preventing ammonia escape; and the exhaust gas is discharged after being sprayed and absorbed by the primary absorption tower and the second absorption tower. The invention has the following advantages: 1) the purity of the by-product is high; 2) the twin tower design can not only obtain higher desulfurization efficiency, but also produce by-product with high purity; 3) the technology takes ammonium acid sulfite as the ultimate by-product, not only saving the technologies of crystallization and drying in the traditional technology, but also improving the additional value of the by-product; and 4) the technology in the invention can be recycled and has no 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 Applications(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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