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Evaporator

A technology of evaporator and heat exchanger, which is applied in the field of concentrated liquid concentration devices in the chemical industry, and can solve problems such as low thermal efficiency, high energy consumption, and large pollution

Inactive Publication Date: 2009-08-19
眉山市津鑫机电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this evaporation method has the disadvantages of high energy consumption, low thermal efficiency, large pollution and large investment in equipment. The evaporation process used in the production of soda sulfide belongs to this method.

Method used

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Examples

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Effect test

Embodiment 1

[0015] Specific embodiment 1 of the present invention, an evaporator, including a heating chamber and a heat exchanger installed in the heating chamber, the heating chamber has a high-temperature gas inlet and a gas outlet, and a heat exchange cylinder 2 is installed in the heating chamber, and the heat exchange cylinder 2 There are hollow shafts 1 communicating with the inside of the heat exchange cylinder 2 at both ends respectively, the two hollow shafts 1 are coaxial, and an openable and closable discharge port 3 is provided on the cylinder wall of the heat exchange cylinder 2 (for example, in the discharge There is an opening and closing valve on the mouth), and a driving device is installed outside the heating room, and the driving device drives the heat exchange cylinder 2 to rotate through the transmission parts, such as figure 1 shown. The transmission part can be a ring gear set on the hollow shaft 1 and a gear meshed with the ring gear; it can also be a sprocket and...

specific Embodiment 2

[0018] Specific embodiment 2 of the present invention, a kind of evaporator, its structure is similar to embodiment 1, is used in the soda sulfide production process. The heating chamber is built with a brick-concrete structure, with a height of about 3-4 meters. The top can be made of brick-concrete structure or steel plate. The diameter of the heat exchange cylinder is between 2 and 8 meters. The heating chamber is located in the converter for alkali sulfide production. In addition, the high-temperature gas inlet is connected to the high-temperature waste flue gas outlet discharged from the alkali sulfide production converter, and the high-temperature waste flue gas discharged from the converter is used to heat, evaporate and concentrate the rotary heat exchange cylinder containing the evaporated medium inside.

[0019] The energy consumption comparison between the evaporator in Example 2 and the original sulfide production evaporation equipment is shown in Table 1.

[0020]...

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Abstract

The invention discloses an evaporator, which comprises a heating chamber and a heat exchanger arranged in the heating chamber. The evaporator is characterized in that the heating chamber is provided with a high-temperature gas inlet and a gas outlet; the inside of the heating chamber is provided with a heat exchange cylinder, and both ends of the heat exchange cylinder are provided with a hollow shaft which is communicated with the inside of the heat exchange cylinder respectively, wherein the two hollow shafts are coaxial; and the cylinder wall of the heat exchange cylinder is provided with a discharge port which can be opened and closed, and the outside of the heating chamber is provided with a driving device which drives the heat exchange cylinder to rotate through a transmission part. Evaporated media in the evaporator are directly heated in the rotating heat exchange cylinder, and bubbles generated by evaporating water in the evaporated media can be quickly exhausted so as to ensure that bubble cores with high heat release coefficients are evaporated. Moreover, in the production process of akali sulphide, high-temperature waste flue gas exhausted by a rotating furnace can be directly utilized so as to achieve the aims of saving energy and reducing emission.

Description

technical field [0001] The invention relates to a device for concentrating liquid concentration in the chemical industry, in particular to an energy-saving evaporator. Background technique [0002] At present, in the chemical industry, in order to condense a liquid with a lower concentration into a liquid with a higher concentration, the evaporation process generally uses a steam jacket to heat and evaporate the evaporated medium, that is, the liquid that needs to be concentrated. This process is secondary heat transfer. (boiler steam is evaporating medium), when the evaporating medium in the heat exchanger is heated, a large number of air bubbles generated by the rapid vaporization of water in the heat exchanger adhere to the cylinder, forming thermal resistance. At this time, the air bubbles cannot be discharged in time, making the heat release coefficient Rapid descent reduces heat transfer. Therefore, this evaporation method has the disadvantages of high energy consumpt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/00
Inventor 刘忠华吴斌
Owner 眉山市津鑫机电有限公司
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