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Device for absorbing and purifying SO2 in diesel engine tail gas by utilizing seawater and absorption method

A diesel engine and seawater technology, applied in the field of environmental pollution control, can solve the problems of no obvious improvement in gas-liquid mass transfer efficiency, no substantial improvement in desulfurization efficiency, complex device structure, etc., to meet space requirements, high absorption efficiency, and economical cost. low effect

Inactive Publication Date: 2014-11-26
JIANGSU NANJI MACHINERY
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  • Claims
  • Application Information

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Problems solved by technology

However, the device does not significantly improve the gas-liquid mass transfer efficiency, and does not substantially improve the desulfurization efficiency; and the device structure is relatively complicated, which is not suitable for use on ships and is inconvenient for maintenance

Method used

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  • Device for absorbing and purifying SO2 in diesel engine tail gas by utilizing seawater and absorption method
  • Device for absorbing and purifying SO2 in diesel engine tail gas by utilizing seawater and absorption method
  • Device for absorbing and purifying SO2 in diesel engine tail gas by utilizing seawater and absorption method

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with accompanying drawings and embodiments.

[0028] Figure 1-3 As shown, a kind of using seawater to absorb and purify SO in diesel engine exhaust 2The device includes flue gas scrubber 1, air inlet 2, air outlet 3, water outlet 4, liquid flow meter 5, circulating liquid nozzle 6, defogging plate 7, gas-liquid cyclone contactor 8, liquid circulation pump 9, Heat pipe heat exchanger 10, seawater regeneration tank 11 and aeration fan 12. The stainless steel shell 101 of the flue gas scrubber 1 is provided with a liquid flow meter 5, a circulating liquid nozzle 6, a defogging plate 7 and a three-stage gas-liquid cyclone contactor 8 from top to bottom, and the bottom of the stainless steel shell 101 is set There is an air inlet 2, the bottom of the stainless steel housing 101 is provided with a water outlet 4, the top of the stainless steel housing 101 is provided with an air outlet 3, the air inlet 2 ...

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Abstract

The invention relates to a device for absorbing and purifying SO2 in diesel engine tail gas by utilizing seawater and an absorption method. The device includes a flue gas washer, a liquid circulating pump, a heat pipe heat exchanger, a seawater regeneration tank and an aeration fan; the flue gas washer is connected with a diesel engine tail gas exhaust system; the seawater regeneration tank is connected with a water inlet of the flue gas washer successively through the heat pipe heat exchanger and the liquid circulating pump; the seawater regeneration tank is connected with the aeration fan and is connected with a water outlet of the flue gas washer. With use of cyclone contactors in the flue gas washer, the gas-liquid contact area is increased, so that high efficiency and stable removal of SO2 is achieved, the absorption efficiency is higher, and the cost is saved.

Description

technical field [0001] The invention relates to the field of environmental pollution control, in particular to a method for absorbing and purifying SO in diesel engine tail gas by using seawater. 2 devices and methods. Background technique [0002] With the rapid development of international trade and shipping industry, the tonnage of ships continues to increase, and the air pollution and greenhouse effect caused by exhaust emissions from ships fueled by petroleum products have been highly valued worldwide. Most of the sulfur in crude oil remains in the residual oil in conventional refinery towers, while heavy oil and residual oil are mostly used as fuel for large ocean-going ships. The average sulfur content is 2.8%, and some are as high as 3.5% or even 4.5%. The form of exhaust gas is discharged into the atmosphere, which is one of the main factors leading to acid rain pollution. According to the data provided by Norway to IMO, by 2000, the annual SOx emissions from sh...

Claims

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Application Information

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IPC IPC(8): B01D53/92B01D53/50
Inventor 李伟倪建峰刘楠赵青宁王春勇张浩哲王建海赵崇键
Owner JIANGSU NANJI MACHINERY
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