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CN-224230815-U - Steam waste heat recovery device of multi-effect concentration system

CN224230815UCN 224230815 UCN224230815 UCN 224230815UCN-224230815-U

Abstract

The utility model discloses a steam waste heat recovery device of a multi-effect concentration system, which belongs to the technical field of energy conservation of chemical equipment and comprises a first-effect heating tank, a second-effect heating tank, a third-effect heating tank and a fourth-effect heating tank, wherein a control cabinet is arranged on one side of the device, the first-effect heating tank, the second-effect heating tank, the third-effect heating tank and the fourth-effect heating tank are sequentially distributed from right to left, the outer ends of the first-effect heating tank, the second-effect heating tank, the third-effect heating tank and the fourth-effect heating tank are connected with steam pipelines, the outer ends of the steam pipelines are connected with a steam compressor and a cooling heat exchanger, the outer ends of the cooling heat exchanger are provided with a condensate water tank, a condensate water pipeline is connected between the cooling heat exchanger and the condensate water tank, the recovery of the final-effect steam waste heat of the multi-effect concentration system by the steam compressor can be realized, the steam consumption of the first-effect heating tank can be reduced, the load of the cooling system can be reduced, the whole heat efficiency can be improved, and the obvious energy conservation and emission reduction effects are achieved.

Inventors

  • SHEN CONG
  • XUE ZHIWEI
  • LV YI

Assignees

  • 苏州领跑者能源科技有限公司

Dates

Publication Date
20260512
Application Date
20250528

Claims (6)

  1. 1. The utility model provides a multiple-effect concentration system's steam waste heat recovery device, includes first effect heating jar (1), second effect heating jar (2), triple effect heating jar (3) and quadruple effect heating jar (4), its characterized in that, one side of device is equipped with switch board (22), first effect heating jar (1), second effect heating jar (2), triple effect heating jar (3) and quadruple effect heating jar (4) distribute from right to left in proper order, first effect heating jar (1), second effect heating jar (2), triple effect heating jar (3) and quadruple effect heating jar (4) outer end are connected with steam pipe (20), steam pipe (20) outer end is connected with steam compressor (5) and cooling heat exchanger (7), steam compressor (5) outer end is connected with steam heat exchanger (6), cooling heat exchanger (7) outer end is equipped with condensate water tank (8), be connected with condensate pipe (21) between cooling heat exchanger (7) and condensate water tank (8), first effect heating jar (1) outer end is connected with concentrate (12), concentrate (12) and concentrate (13) are connected with concentrate (13) between concentrate inlet.
  2. 2. The steam waste heat recovery device of the multi-effect concentration system according to claim 1, wherein steam condensate outlets (10) are formed in the upper ends of the first-effect heating tank (1), the second-effect heating tank (2), the third-effect heating tank (3) and the fourth-effect heating tank (4), the steam condensate outlets (10) are connected with steam pipelines (20), and steam inlets (9) are formed in the right ends of the first-effect heating tank (1), the second-effect heating tank (2), the third-effect heating tank (3) and the fourth-effect heating tank (4).
  3. 3. The steam waste heat recovery device of the multi-effect concentration system according to claim 2, wherein a steam valve (11) is installed at the outer end of the steam condensate outlet (10).
  4. 4. The steam waste heat recovery device of the multi-effect concentration system according to claim 1, wherein the outer ends of the concentrated solution return pipeline (13) and the concentrated solution delivery pipeline (14) are respectively provided with a temperature sensor (15) and a flow sensor (16).
  5. 5. The steam waste heat recovery device of the multi-effect concentration system according to claim 1, wherein drain outlets (18) are formed in the bottom ends of the first-effect heating tank (1), the second-effect heating tank (2), the third-effect heating tank (3) and the fourth-effect heating tank (4), and drain pipes (19) are connected to the outer ends of the drain outlets (18).
  6. 6. The steam waste heat recovery device of a multi-effect concentration system according to claim 5, wherein a drain valve (17) is installed at the outer end of the drain outlet (18).

Description

Steam waste heat recovery device of multi-effect concentration system Technical Field The utility model relates to the technical field of chemical equipment energy conservation, in particular to a steam waste heat recovery device of a multi-effect concentration system. Background In many industrial fields such as chemical industry, pharmacy, food processing, etc., a multi-effect concentration system is a key device widely used, and is mainly used for concentrating a liquid material to remove part of water or other solvents therein, thereby improving the concentration and purity of the material, meeting the requirements of subsequent production or storage, and generally comprising a plurality of heating tanks connected in series, each heating tank uses steam as a heat source, so that the material is heated and evaporated in the tank, and the concentration process is realized. In the traditional multi-effect concentration system, after the heat is released from the first-effect heating tank, the temperature and the pressure of the steam are gradually reduced, the steam sequentially enters the subsequent-effect heating tank to be continuously utilized, so that multi-stage energy recovery and utilization are realized, however, in the operation process of the system, the steam discharged from the last-effect heating tank is usually low-temperature low-pressure steam, and the steam contains certain residual heat, but is difficult to directly reuse in the heating process due to lower temperature and pressure, and is often directly discharged into the atmosphere or is subjected to cooling treatment through a cooling system, so that a great amount of heat energy is wasted, the energy consumption is increased, the load of the cooling system is increased, the cooling water consumption is increased, and the production cost and the environmental pressure are further increased. Therefore, the utility model develops a multi-effect concentration system steam waste heat recovery device which has simple structure, low cost and high recovery efficiency and can effectively control the temperature of concentrated solution, has important practical significance and application value, is designed based on the requirement, realizes the high-efficiency recovery and utilization of the steam waste heat by adopting a steam compressor to compress and recover the final-effect steam and utilizing a steam heat exchanger to preheat the concentrated solution, and simultaneously realizes the real-time monitoring and accurate control of the system operation parameters by arranging monitoring equipment such as a temperature sensor, a flow sensor and the like, effectively solves the problems of energy waste, large load of a cooling system, unstable product quality and the like in the traditional multi-effect concentration system, and provides an effective solution for energy conservation and emission reduction in industrial production. Disclosure of Invention Aiming at the problems existing in the prior art, the utility model aims to provide a steam waste heat recovery device of a multi-effect concentration system, which can realize recovery of final-effect steam waste heat of the multi-effect concentration system by utilizing a steam compressor, is used for heating concentrated solution, can reduce the steam consumption of a first-effect heating tank, reduces the load of a cooling system, improves the overall heat efficiency, and has obvious energy-saving and emission-reducing effects. In order to solve the problems, the utility model adopts the following technical scheme: The utility model provides a multiple-effect concentration system's steam waste heat recovery device, includes first effect heating jar, second effect heating jar, triple effect heating jar and quadruple effect heating jar, and one side of device is equipped with the switch board, first effect heating jar, second effect heating jar, triple effect heating jar and quadruple effect heating jar distribute from right to left in proper order, first effect heating jar, second effect heating jar, triple effect heating jar and quadruple effect heating jar outer end are connected with steam pipeline, the steam pipeline outer end is connected with vapor compressor and cooling heat exchanger, the vapor compressor outer end is connected with vapor heat exchanger, the cooling heat exchanger outer end is equipped with the water tank that congeals, be connected with the water tank between cooling heat exchanger and the water tank that congeals, first effect heating jar outer end is connected with concentrate feed inlet, be connected with concentrate return liquid pipeline and concentrate feed liquid pipeline between concentrate feed inlet and the vapor heat exchanger, can realize utilizing vapor compressor to retrieve the final effect steam waste heat of multiple-effect concentration system for heating concentrate, can reduce the vapor load of first effect heating jar, reduce cooling system'