Method for quickly determining condenser leakage in maleic anhydride production
A cooler and fast technology, which is applied in the chemical industry, can solve the problems of untimely leakage of coolers, low operating costs, and low energy consumption, and achieve the effects of timely and accurate leakage, pollution prevention, and fast and accurate methods
Inactive Publication Date: 2015-04-29
TIANJIN BOHUA ZHONGHE CHEM
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Problems solved by technology
[0004] The purpose of the present invention is mainly aimed at the existing deficiencies in the untimely judgment of cooler leakage in maleic anhydride production, and proposes a method for quickly judging cooler leakage in maleic anhydride production with low energy consumption, low investment, low operating costs, and simple flow process
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[0011] In order to make the technical means, creative features, objectives and effects of the practice of the present invention easy to understand, the present invention will be further described below in conjunction with specific examples without limiting the present invention.
[0012] like figure 1 As shown, a temperature measurement point 2 is added to the bottom of the finned heat exchanger 1 box, and the temperature measurement point 2 is connected to the remote display device through the DCS system. If there is a leak inside the heat exchanger, the leaked water vapor will change the temperature at the bottom of the heat exchanger 1; when a large temperature change is found through the real-time monitoring system, the on-site operator checks the discharge valve to see if there is condensed water flowing out. If there is condensed water flowing out, stop the machine immediately, so that the gas cooler can be judged timely and accurately.
[0013] The method can quickly a...
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The invention provides a method for quickly determining condenser leakage in maleic anhydride production. The method comprises the steps of additionally mounting a temperature measuring point at the bottom part of a box body of a fin type heat exchanger, wherein the temperature of the bottom part of the heat exchanger changes under the effect of water vapor leaked from the inner part of the heat exchanger in case of leakage occurs; examining a drain valve by field operators in case that the temperature changes a lot is found by a real-time monitoring system; observing whether condensed water flows out; if so, stopping the machine to handle; therefore, the leakage of the air condenser can be timely and accurately determined. According to the method, the temperature measuring point is additionally mounted at the inner bottom part of the fin type heat exchanger, so that the purpose of quickly determining the condenser leakage in the maleic anhydride production can be achieved; compared with the traditional determining method, the method is fast and accurate, and can effectively determine the leakage of the heat exchanger, so as to prevent the subsequent products from being polluted by crude maleic anhydride.
Description
Technical field: [0001] The invention is applied in the production process of maleic anhydride in the chemical industry field, and is specifically applied in quickly judging the leakage of coolers in the production of maleic anhydride. Background technique: [0002] Maleic anhydride is an important basic raw material of organic chemical industry, and it is the third largest anhydride in consumption after acetic anhydride and phthalic anhydride. The main use of maleic anhydride is to produce unsaturated polyester resin, and maleic anhydride is also used in coatings, inks, lubricating oil additives, agricultural chemicals, paper sizing agents, permanent textile finishing agents, surfactants, etc. A series of important fine chemical products such as 1,4-butanediol, γ-butyrolactone, tetrahydrofuran, fumaric acid and tetrahydrophthalic anhydride can also be produced from maleic anhydride. [0003] The gas cooler in the maleic anhydride plant is a multi-set finned heat exchanger....
Claims
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IPC IPC(8): F28F27/00
Inventor 林占生
Owner TIANJIN BOHUA ZHONGHE CHEM