Seeking information on practices and technical modification controls related to new emission standards for sulfur recovery
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This post was last edited by zyf00110 on 2015-7-3 at 18:36. The \"Emission Standards for Pollutants in the Petroleum Refining Industry\", which came into effect on July 1, 2015, set the emission limit for sulfur recovery flue gas at SO2＜400mg/m3； Let’s discuss how to ensure that existing devices meet emission standards ； For some devices whose design capacity is only 400 mg/m3, how can emissions be brought within the specified limits? Is it by adopting certain measures or by reducing certain parameters, or through technical upgrades to achieve compliance with emission standards? We invite everyone to participate actively; different amounts of rewards will be given based on the technical information provided. Thank you!
Our emission standard here is less than 100. We are still exploring solutions at the moment. 1. We currently plan to use technical modifications to redirect the gas from the liquid sulfur tank to the sulfur production furnace (the effects of this approach are yet to be seen). 2. Another change made was to the feed layer of the absorption tower (there are three in total, with the top layer being used for feeding); the effect was not significant (the exhaust gas concentration could be reduced by about 20 MG/M3). 3. Try to reduce the temperature at the top of the extremely cold tower to around 34 degrees. 4. Try to lower the temperature of the circulating amine solution; if necessary, use air cooling to reduce the temperature of the amine solution in the absorption tower. 4. It is the replacement of the amine solution. Currently, our SO2 emissions are around 190, but they still do not meet the new standards. Do anyone have any other new methods?
We carried out major repairs this year, transferring the degassing process from the liquid sulfur degassing tank to the sulfur production furnace. After its implementation, the sulfur dioxide levels in the chimney decreased by about 140 mg/m3, and the temperature of the sulfur production furnace dropped by around 40°C; the effects were significant. Currently, the sulfur dioxide level in the chimney exhaust is around 130 mg/m3, which is still above the target of 100 mg/m3.
Is it definitely 100mg/m3? It’s not PPM