A Method for Improving Heat Exchange Performance of Reboiler
A heat transfer performance, reboiler technology, applied in the direction of instruments, calculations, electrical digital data processing, etc., can solve the problems of increased investment costs, increased heat transfer area of heat exchangers, etc., to save equipment costs and improve heat transfer performance, uniform porosity
Active Publication Date: 2019-02-12
DALIAN CATHAY PETROCHEM TECH
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Problems solved by technology
The existing internal strengthening of the reboiler is mainly carried out by increasing the heat transfer area, but the heat transfer area of the heat exchanger cannot be increased without limit, otherwise the investment cost will increase greatly, and with the development of industrialization Progress, equipment compaction is an inevitable trend
Method used
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Embodiment
[0054] The bottom material of a rectification tower is water, the pressure is 0.1MPa, the flow rate is 100t / h, 20% of which is reboiled, and the vaporization temperature is 100°C. The reboiler is made of stainless steel 304. ) heating, the heat exchange area is about 80m 2 .
[0055] The method for improving the heat exchange performance of the reboiler of the present invention is now used to internally strengthen the reboiler, and use stainless steel-based metal sintered high-flux heat exchange tubes to optimize the heating medium and heat exchange area.
[0056] Specific steps are as follows:
[0057] Step 100: According to the vaporization rate and physical parameters of the liquid to be heated (water in this embodiment), calculate the Matnery number with the following formula:
[0058]
[0059] x tt is the Mattery number, dimensionless;
[0060] x is the gasification rate, the value is 0.2;
[0061] Under the condition of 0.1MPa pressure and 100℃, the parameters of...
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Abstract
The invention discloses a method for improving heat exchange performance of a reboiler. The method comprises the following steps that a, a metal sintered type high-throughput heat exchange pipe is selected, and the superheat degree delta T is determined according to materials and the diameter; b, boiling heat transfer coefficient h of the metal sintered type high-throughput heat exchange pipe is determined; c, the heat exchange area A is calculated according to the superheat degree delta T and the boiling heat transfer coefficient h; d, according to the heat exchange area A, the metal sintered type high-throughput heat exchange pipe in the step b is selected for replacing a heat exchange pipe in the reboiler. By the technical scheme, the heat exchange performance of the reboiler is ensured through the metal sintered type high-throughput heat exchange pipe with the appropriate area, the equipment cost is saved, and the requirements for energy conservation and emission reduction are met.
Description
technical field [0001] The invention relates to the field of chemical industry, in particular to a method for improving the heat exchange performance of a reboiler. Background technique [0002] The reboiler is a heat exchanger placed at the bottom of the rectification tower, and it is a general-purpose equipment widely used in petrochemical and other industrial fields. The existing internal strengthening of the reboiler is mainly carried out by increasing the heat transfer area, but the heat transfer area of the heat exchanger cannot be increased without limit, otherwise the investment cost will increase greatly, and with the development of industrialization Progress, equipment compaction is an inevitable trend. [0003] After long-term research, the inventors found that increasing the heat transfer coefficient has a great influence on improving the heat transfer performance of the reboiler. The reboiler usually uses steam as the heating medium, which releases heat in t...
Claims
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IPC IPC(8): G06F17/50
CPCG16Z99/00
Inventor 王甦王新剑陈晓文于春健刘霁斌
Owner DALIAN CATHAY PETROCHEM TECH