顺酐过程中的主要污染源及污染物是废气、废水、废渣等，在如何处理废气等方面作了以研究和分析:由于顺酐过程中产生的废气如果直接排放会对人身体健康造成非常大的伤害，因此必须积极有效地进行处理。水吸收塔或有机溶剂吸收塔排放出的尾气是顺酐装置的尾气主要来源，在以苯为原料的路线上，废气处理系统的设计就是为了从吸收塔排出气体中的有机

The main pollution sources and pollutants in the production process of maleic anhydride are exhaust gas, wastewater, waste residue, etc. Research and analysis have been conducted on how to treat exhaust gas. As the exhaust gas generated in the production process of maleic anhydride can cause significant harm to human health if discharged directly, it must be actively and effectively treated. The exhaust gas discharged from the water absorption tower or organic solvent absorption tower is the main source of exhaust gas in the production of maleic anhydride units. In the production route using benzene as raw material, the design of the exhaust gas treatment system is to remove organic matter from the exhaust gas from the absorption tower

物，如苯、二甲苯、CO等。

Substances such as benzene, xylene, CO, etc.

的方法是使有机物在催化剂的作用下与氧发生反应，使之变成水和二氧化碳。应根据尾气中污染物的浓度、性质、条件和经济性进行实施。以正丁烷制顺酐尾气处理为例，废气处理程序较为复杂，但却有效节约能源。其工艺流程为:自吸收塔顶排出的废气中会

The method of removal is to cause organic matter to react with oxygen under the action of a catalyst, turning it into water and carbon dioxide. Implementation should be based on the concentration, nature, production conditions, and economic efficiency of pollutants in the exhaust gas. Taking the treatment of tail gas from n-butane to maleic anhydride as an example, the waste gas treatment process is relatively complex, but it effectively saves energy. The process flow is as follows: in the exhaust gas discharged from the top of the absorption tower

有大量CO、未反应的正丁烷和其他有机物及氧等，进入膜分离装置，含正丁烷的气体返回反应器，另一部分废气，即渗余气则送入蓄热式氧化器。燃气加热到790C，使有机物在高温下发生氧化反应，运行后小再需外界燃料供应，废气自行氧化且生成的热量产生2.5MPa蒸汽3.6t/h。氧化后的废气中的碳氢化合物以COz和水蒸气的形式排放到大气中。

A large amount of CO, unreacted n-butane, other organic compounds, and oxygen enter the membrane separation device, and the gas containing n-butane returns to the reactor. The other part of the exhaust gas, i.e. residual gas, is sent to the regenerative oxidation reactor. Heating the gas to 790C causes organic matter to undergo oxidation reaction at high temperatures. After operation, external fuel supply is required, and the exhaust gas oxidizes itself and generates 2.5MPa steam of 3.6t/h of heat. The hydrocarbons in the oxidized exhaust gas are discharged into the atmosphere in the form of COz and water vapor.

苯法顺酐是在固定床反应器中，使原料苯经过催化剂V-M)-P碳化硅的催化，与空气接触完成氧化反应，生成顺酐气体。然后顺酐气体经水的吸收，以及恒沸脱水，减压连续精馏后，得到顺酐。苯法顺酐的工艺中，通过对催化剂的装填、反应器压力、反应器进口气温度、空速和熔盐温度的优化来完善整个工艺。

The production of maleic anhydride by the benzene method is carried out in a fixed bed reactor, where the raw material benzene is catalyzed by the catalyst V-M) - P silicon carbide and comes into contact with air to complete the oxidation reaction, generating maleic anhydride gas. Then, the maleic anhydride gas is absorbed by water, followed by azeotropic dehydration and continuous distillation under reduced pressure to obtain maleic anhydride. In the production process of benzene based maleic anhydride, the entire process is improved by optimizing the loading of catalysts, reactor pressure, reactor inlet temperature, space velocity, and molten salt temperature.

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