Compared with sulfuric acid process, under the premise of ensuring pure benzene quality, the pollution of tar acid and waste water contained with acid on environment can be eliminated.

与硫酸法相比，在保证纯苯质量的前提下，可消除酸焦油和含酸废水对环境的污染。

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We develop the new process and apply to produce. This has achieved the goal of recovery and utilization of acid tar and pollution control.

通过开发酸焦油配煤生产工艺，并应用于生产实践，达到了回收利用和控制污染的目的。

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The surrounding area of the coke oven, the raw coal gas purification workshop and the coal tar and crude benzene processing workshop would be the most serious pollution area of the coking plant.

其中炼焦炉周边、荒煤气净化车间、焦油和粗苯加工车间是焦化厂污染最严重的区域。

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Production of oil from tar sands bitumen produces between three and five times the greenhouse gas pollution of conventional oil production.

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While the pipeline project is a better alternative from a carbon pollution standpoint than shipping the oil by rail, the emissions created by harvesting tar sands, processing them into oil and eventually burning it in automobiles in the U.S. and abroad will contribute to global warming.

NPR: PROMISES, PROMISES: Climate Change