Self cleaning method for condenser for cooling easily condensate

A technology for condensers and solidified products, applied in steam/steam condensers, lighting and heating equipment, etc., can solve problems such as channel blockage, poor condensation effect of condensers, and inability to run continuously, saving cleaning costs, easy to implement, The effect of prolonging the service life

Active Publication Date: 2009-06-03
云南水富云天化有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a self-cleaning method for the condenser, which can prevent the solidification of the condensed material from depositing on the tube wall of the condenser, so that the tube wall of the condenser is in a clean state, So as to solve the problems of poor condensation effect, channel blockage and non-continuous operation of the condenser

Method used

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  • Self cleaning method for condenser for cooling easily condensate

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Embodiment Construction

[0023] The structure of the condenser 1 in the present embodiment is as figure 1 As shown, the hydrolysis system used in the urea plant, the former system - steam containing high concentration of ammonia and carbon dioxide from the distillation tower and hydrolyzer, the pressure is 0.3MPa, the temperature is 110°C, the condensate (unsaturated ammonium bicarbonate at 40°C Liquid) total amount is 20 tons / hour; the temperature of cooling water is 30 ℃, flow rate is 600 tons / hour, after taking away reaction heat, the temperature of cooling water out of condenser is 42 ℃; Returned unsaturated ammonium bicarbonate liquid control At 2 tons / hour (10% of the total amount of condensate).

[0024] Such as figure 1 As shown, the former system—distillation tower and hydrolyzer with a pressure of 0.3MPa and a temperature of 110°C containing high-concentration ammonia and carbon dioxide steam is cooled by condenser 1 to form an unsaturated ammonium bicarbonate liquid with a temperature of 4...

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Abstract

A self-cleaning method of condenser includes returning partial condensed liquid of condenser back from condenser liquid outlet to condenser inlet of material to be cooled, atomizing returned-condensed liquid and mixing atomized-condensed liquid with gas-phase material to be cooled to form gas and liquid fog drop mixture then sending formed mixture into condenser for realizing self-cleaning of condenser.

Description

technical field [0001] The invention belongs to a cleaning method for a condenser, in particular to a cleaning method for a condenser used by condensed materials (such as crystallization, polymerization, etc.) that may solidify. Background technique [0002] When the condenser condenses easily solidified substances, due to the inhomogeneous and unstable characteristics of the mixture system, even if the overall concentration of the condensed solution does not reach the solidified concentration at its corresponding temperature, supersaturation will occur locally, thus forming Solids adhere to the heat exchange tube walls of the condenser. Furthermore, because the flow velocity at the tube wall of the heat exchange tube of the condenser is low, the solid attached to the tube wall cannot be taken away in time. Therefore, the heat exchange tube wall of the condenser that condenses easily solidified substances is easy to generate solid deposits. Once solid deposits are formed o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28B1/02
Inventor 陈林梁洪罗大智
Owner 云南水富云天化有限公司
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