Naphthalene method phthalic anhydride pre-condenser
By designing a naphthalene-based phthalic anhydride pre-condenser and utilizing the condenser tube body and spray structure, the problem of decreased condensation effect when phthalic anhydride gas is overloaded is solved, efficient condensation and simplified cleaning are achieved, and the smooth progress of subsequent processing is ensured.
CN120789703AActive Publication Date: 2025-10-17JIANGSU ZHENGYUAN ENG EQUIP CO LTD
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Patent Information
- Application Number
- CN202511277094.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2045-09-09
AI Technical Summary
Technical Problem
When the existing condensing equipment is overloaded with phthalic anhydride gas, the condensation effect decreases, impurity condensation intensifies, and the fins are difficult to clean.
Method used
A naphthalene-based phthalic anhydride pre-condenser was designed, which includes a casing, an outer shell, a condenser tube body and a spray structure. Through the special design of the condenser tube body and the spray structure, the gas flow direction and concentration are controlled, the temperature difference is reduced, and the scaling risk is reduced.
Benefits of technology
The condensation effect of phthalic anhydride gas is improved, impurity condensation is reduced, fin cleaning is simplified, and good subsequent treatment effects are ensured.
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Abstract
The invention belongs to the technical field of phthalic anhydride production, and particularly discloses a naphthalene method phthalic anhydride precondenser which comprises a machine shell and a shell, the machine shell is arranged in the shell, an air inlet pipe and an exhaust pipe are sequentially installed on one side of the machine shell from top to bottom, and the other end of the air inlet pipe and the other end of the exhaust pipe both penetrate out of the shell; by arranging the mounting structure and the condensation pipe body, the flow direction of gas can be limited, and in the process, due to the fact that a heat exchange medium in the condensation pipe body flows from a discharge area to a treatment area, the temperature of the heat exchange medium in the treatment area is slightly higher than that of the discharge area, and the heat exchange efficiency is improved. The cooling medium flowing in the condensation pipe body is just input into the condensation pipe body, so that the temperature difference between the phthalic anhydride gas and the phthalic anhydride gas is reduced when the phthalic anhydride gas is just guided into the heat exchange medium, and the production of condensed liquid is reduced; and the gas which is primarily cooled in the treatment area can be further cooled under the action of the cooling medium flowing in the section of the condensation pipe body.
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