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A dual-circuit desulfurization device for ships

A desulfurization device and dual-loop technology, applied in the direction of using liquid separation agent, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of affecting the uniform distribution of exhaust gas, complex structure of the scrubber, increasing construction difficulty, etc., and improve the utilization rate. , the effect of reducing usage and volume

Active Publication Date: 2015-10-28
HARBIN ENG UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The structure of the washing tower is complicated, and there are many external connecting pipelines, which are difficult to install and increase the difficulty of construction
In addition, the complex structure of the scrubber affects the uniform distribution of exhaust gas, which is not conducive to exhaust gas desulfurization

Method used

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  • A dual-circuit desulfurization device for ships

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Embodiment Construction

[0014] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0015] to combine figure 1 , the present invention comprises low pH value lye spraying area I, high pH value lye spraying area II, defogging area III, demister cleaning pipeline IV, high pH value lye circuit V, low pH value lye Circuit Ⅵ, connecting pipeline Ⅶ, waste gas inlet 1, liquid collection tank 2, 5, low pH lye spray device 3, waste gas hood 4, packing 6, high pH lye spray device 7, mist eliminator cleaning Devices 8, 10, demister 9, waste gas outlet 11, water pump 12, 14, 18, 20, 24, fresh water tank 13, three-way valve 15, 19, 21, 22, 23, lye tank 16, 17, waste Liquid tank 25.

[0016] The washing tower in the marine desulfurization method and device of the present invention adopts countercurrent spraying operation.

[0017] The working process of the device of the present invention is: the waste gas of the ship power unit enters the low pH value lye ...

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Abstract

The invention aims to provide a double-loop desulfurization device for a ship. A conventional alkaline liquor spraying loop is divided into a high-pH-value alkaline liquor loop and a low-pH-value alkaline liquor loop, the waste gas of a ship power device is washed and desulfurized in sequence, and the utilization rate of alkaline liquor is improved by arranging a connection pipeline. The double-loop desulfurization device comprises a pipeline part consisting of a demisting cleaning pipeline IV, the high-pH-value alkaline liquor loop V and the low-pH-value alkaline liquor loop VI, wherein a washing tower is connected with the pipeline and is correspondingly divided into three parts namely a demisting area III, a high-pH-value alkaline liquor spraying area II and a low-pH-value alkaline liquor spraying area I from top to bottom. The waste gas of the ship flows upstream and passes through the three spraying areas, so that SOx and fine particles in the waste gas are effectively removed. The double-loop desulfurization device is compact in structure and easy to operate, the desulfurization efficiency can be effectively improved, and the operation stability is improved; moreover, the device is environment-friendly and energy-saving, and the using quantity of chemical additives can be reduced.

Description

technical field [0001] The invention relates to a marine device, in particular to a marine exhaust gas desulfurization device. Background technique [0002] At present, the wet scrubber technology mainly improves the desulfurization efficiency by increasing the pH value of the washing lye, increasing the number of circulating pumps, and using chemical additives in a single loop. In the lye of the single-loop wet washing process, a large amount of absorbent needs to be added to maintain a high pH value of the lye, and a high pH value is not conducive to the oxidation of sulfite ions in the final product, which is not conducive to reducing the chemical oxygen demand (COD); The increase in the number of pumps will greatly increase power consumption and operating costs; and when chemical additives are used, the strong oxidation device in the lye pool will accelerate the chemical degradation of the additives, thereby increasing the amount of additives used. [0003] Patent appli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/50B01D53/64B01D47/06
Inventor 周松杨军刘佃涛张金钊朱元清
Owner HARBIN ENG UNIV
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