A maleic anhydride waste gas recovery device

Abstract

A maleic anhydride waste gas recovery device, the invention belongs to the field of maleic anhydride waste gas recovery, comprising a wall chamber, two partition walls are arranged in the wall chamber, several heat accumulators are arranged in the wall chamber, partitions are arranged under the heat accumulators, and partition walls are arranged in the wall chamber. The board is set horizontally, and several rows of prismatic holes are set on the partition, and nuts are arranged in the prismatic holes. When the nuts are in the prismatic holes, the outer circumference of the nut fits the wall of the prismatic hole. The position piece enables the nut to move only perpendicular to the partition, and a screw rod is arranged in each nut, and a power device is connected to the lower end of the screw rod. The invention has two working states, one is that the nut is located in the heat storage body, and the surroundings of the heat storage body can also absorb heat energy and be used for preheating; the other is that the nut is located in the rib hole, and the core of the heat storage body absorbs heat energy, By switching the above two working states, the regenerator can store heat energy more uniformly, and it will not affect the normal operation of the combustion chamber compared with the reverse burning process.

Description

technical field [0001] The invention belongs to the field of maleic anhydride waste gas recovery, in particular to a maleic anhydride waste gas recovery device. Background technique [0002] The waste gas produced by the production of maleic anhydride cannot be discharged directly. Currently, the common treatment methods include incineration. The tail gas incineration method is divided into thermal storage oxidation and catalytic oxidation. Each has its own advantages and disadvantages. Thermal storage oxidation includes at least two regional chambers. After heat storage-release-cleaning and other procedures, the heat energy transfer is completed through the ceramic regenerator, that is, the ceramic regenerator absorbs the heat energy of the oxidized gas and then uses it to preheat the subsequent exhaust gas, but the bottom of the ceramic regenerator is easy to Crystallization occurs and the passage is blocked. Therefore, the anti-burning program is set, that is, the high-te...

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Problems solved by technology

[0002] The waste gas produced by the production of maleic anhydride cannot be discharged directly. Currently, the common treatment methods include incineration. The tail gas incineration method is divided into thermal storage oxidation and catalytic oxidation. Each has its own advantages and disadvantages. Thermal storage oxidation includes at least two regional chambers. After heat storage-release-cleaning and other procedures, the heat energy transfer is completed through the ceramic regenerator, that is, the ceramic regenerator absorbs the heat energy of the oxidized gas and then uses it to preheat the subsequent exhaust gas, but the bottom of the ceramic regenerator is easy to Crystallization occurs and the passage is blocked. Therefore, the anti-burning program is set, that is, the high-temperature gas is blown to the direction of the combustion chamber through the fan, which will affect the combustion chamber, such as backflow of exhaust gas, insufficient combustion, etc., or partition the combustion chamber to prevent The high-temperature gas from the back-burning enters, but since the back-burning gas is still the waste gas after combustion and oxidation, it will cause the hidden danger of coking and crystallization on the top of the ceramic regenerator

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