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Method for recovering sulfur dioxide from flue gas and producing hydroxylamine sulphate and system thereof

A technology of hydroxylamine sulfate and sulfur dioxide, which is applied in the fields of environmental protection and chemical engineering, can solve the problems that the value of sulfur resources has not been fully reflected, the sales volume of chemical fertilizers is limited, and the amount of coal burned is large. promising effect

Active Publication Date: 2010-07-28
浙江菲达环保科技股份有限公司
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AI Technical Summary

Benefits of technology

This new method described by this inventors improves upon existing methods such as ammoniation processes (used alone) while still producing high quality products called oxyhydramethion sodiumsulphates (OHS). These chemical intermediaries are useful because it allows us to recycle harmful substances from industrial sources without causing environmental concerns. Additionally, these chemistries have potential applications in various industries like agriculture, medicine, electronics manufacturing, food processing, plastic industry, rubber industry, water treatment, oil drilling, mineral extraction, metal finishing, printing, dyeings, cosmetics, medical devices, electronic components, and other fields where clean air emissions control regulations require removal of nitrogenous gases (N2). Overall, OHCSDS offers technical benefits over current technologies including ammonification techniques, making them more efficient at removing pollutants than traditional ways.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the efficiency of removing nitrogen from combustion gasses during power generation processes without causing environmental pollutions due to excessive amounts of fuel used.

Method used

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  • Method for recovering sulfur dioxide from flue gas and producing hydroxylamine sulphate and system thereof
  • Method for recovering sulfur dioxide from flue gas and producing hydroxylamine sulphate and system thereof

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Embodiment Construction

[0027] Refer to figure 1 , The method for recovering sulfur dioxide from flue gas and producing hydroxylamine sulfate, after flue gas enters the desulfurization unit, includes the following steps: A.NH 4 HSO 3 Concentration process: flue gas first enters NH through flue gas inlet 11 4 HSO 3 Concentration section 1, the liquid-gas ratio of circulating spray in this section is 3~15L / m 3 , The flue gas temperature is reduced to 85~70℃, and the pH of the circulating fluid is controlled at 4.5~5.5, so that the (NH 4 ) 2 SO 3 More converted to NH 4 HSO 3 To make NH 4 HSO 3 It accounts for an absolute proportion in the circulating fluid, which is derived from SO 2 Circulation tank 17 of main absorption section 2; B.SO 2 Main absorption process: After NH 4 HSO 3 The flue gas in the concentration section 1 is sufficiently cooled and humidified, and enters the SO through the air lift cap 12 2 Main absorption section 2, this section is used to elute SO 2 For the main purpose, NH in the circu...

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Abstract

The invention discloses a method for recovering sulfur dioxide from flue gas and producing hydroxylamine sulphate and a system thereof. After the flue gas enters into a desulfurizing device, the method comprises the following steps of: NH4HSO3 concentration working procedure, SO2 main absorption working procedure, demisting and ammonia removing working procedure and production working procedure of the hydroxylamine sulphate. The invention utilizes the improved ammonia method desulfurization technology to recover SO2 resource in the flue gas and produce the hydroxylamine sulphate with higher production value, and the hydroxylamine sulphate is very important medicine and pesticide intermediates and has the valve of being 4-6 times higher than that of chemical fertilizer ammonium sulfate, sothat SO2 resource can be maximally recovered, and the aim of 'changing waste into valuable' can be achieved.

Description

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Claims

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Application Information

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Owner 浙江菲达环保科技股份有限公司
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