常温、常压下的空气经空气过滤器过滤后，由电动鼓风机组、蒸汽透平机驱动的鼓风机组压缩，再经空气加热器加热一定温度。正丁烷液体经输送泵加压后送入到正丁烷蒸发罐，然后使用正丁烷蒸发器使其汽化，再经正丁烷过热器加热一定温度。过热的正丁烷气与空气混合成一定浓度反应气体进入立式管/壳型反应器中，在反应器壳程中采用熔盐混合物通过熔盐泵往复循环用作冷却介质；反应气体进入管程在催化剂的作用下进行氧化反应，反应过程中加入助催化剂。反应热通过熔盐移走，部分熔盐经过熔盐冷却器的壳程，通过与熔盐冷却器管的锅炉水换热产生蒸汽并使其冷却。
The air at room temperature and pressure is filtered by an air filter, compressed by an electric blower unit or a steam turbine driven blower unit, and then heated to a certain temperature by an air heater. The n-butane liquid is pressurized by a delivery pump and sent to the n-butane evaporation tank. It is then vaporized using a n-butane evaporator, and then heated to a certain temperature through a n-butane superheater. The superheated n-butane gas is mixed with air to form a certain concentration of reaction gas and enters a vertical tube/shell reactor. In the shell side of the reactor, the molten salt mixture is used as a cooling medium through reciprocating circulation through a molten salt pump; The reaction gas enters the tube side and undergoes an oxidation reaction under the action of a catalyst, during which a co catalyst is added. The reaction heat is removed through molten salt, and a portion of the molten salt passes through the shell side of the molten salt cooler, generating steam and cooling it by exchanging heat with the boiler water in the molten salt cooler tube.
反应器温度靠控制流经熔盐冷却器的熔盐流量进行控制。反应后的热反应气体经气体冷却器和切换冷却器管程冷却之后送吸收工序。气体冷却器和切换冷却器壳程中的锅炉水被加热并部分气化，和熔盐冷却器中产生的蒸汽在蒸汽包中分离出来或过热后供装置内蒸汽透平机及其它用户做为热源使用。
The temperature of the reactor is controlled by controlling the flow rate of molten salt flowing through the molten salt cooler. The hot reaction gas after reaction is sent to the absorption process after being cooled by the gas cooler and the switching cooler tube side. The boiler water in the shell side of the gas cooler and switching cooler is heated and partially gasified, and the steam generated in the molten salt cooler is separated or overheated in the steam drum for use as a heat source by the steam turbine and other users in the device.
在反应器进料系统中设有增湿系统和助剂添加系统以保证催化剂的转化率和选择性。增湿系统是通过调节低压蒸汽加入量以达到工艺要求；助剂添加是通过氮气鼓泡方法加入到过热正丁烷气体中。
There is a humidification system and an additive addition system in the reactor feed system to ensure the conversion rate and selectivity of the catalyst. The humidification system achieves process requirements by adjusting the amount of low-pressure steam added; Additives are added to superheated n-butane gas through nitrogen bubbling method.
由于顺酐吸收过程和冷凝过程在同一时间发生，在气相流股被冷却时，顺酐绝大部分被从气体中移走。为了使这一过程的热量被全部移出同时维持一个较低的贫溶剂流量，吸收塔下部塔盘在一个带冷却循环回路的直联式冷却器条件下操作。从塔下部上升的气体被冷却后在塔内部塔盘得到有效吸收，在吸收塔内，富气从塔底进入并上升，同时贫溶剂从塔顶进入，富溶剂用吸收塔循环泵一部分输送到吸收塔循环，另一部分输送到富溶剂贮罐，吸收塔顶排出的尾气送到尾气处理系统。
Due to the fact that the absorption and condensation processes of maleic anhydride occur at the same time, the vast majority of maleic anhydride is removed from the gas when the gas-phase stream is cooled. In order to remove all the heat from this process while maintaining a low flow rate of lean solvent, the lower tray of the absorption tower is operated under the condition of a direct connected cooler with a cooling circulation circuit. The gas rising from the bottom of the tower is cooled and effectively absorbed on the internal tray of the tower. In the absorption tower, rich gas enters and rises from the bottom of the tower, while lean solvent enters from the top of the tower. Part of the rich solvent is transported to the absorption tower for circulation by the absorption tower circulation pump, and the other part is transported to the rich solvent storage tank. The exhaust gas discharged from the top of the absorption tower is sent to the tail gas treatment system.
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