Evaporation equipment without circulating pump

Abstract

The utility model relates to the technical field of chemical production equipment, in particular to evaporation equipment without a circulating pump. The evaporation equipment comprises a steam supply system, a negative pressure evaporation system, a heating heat exchange system, a condensation heat exchange system and a negative pressure vacuum system; in the system, a negative pressure evaporation system is simplified, a circulating pump is removed, and a condensation heat exchange system is matched with a negative pressure vacuum system, so that the structure is further simplified. Not only is the cost reduced by simplifying the structure, but also the maintenance of the equipment in the production process is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, and in particular to an evaporation device without a circulating pump. Background Technology

[0002] Evaporation equipment is one of the most commonly used pieces of equipment in chemical production processes. In a broad sense, evaporation equipment consists of a complete series of devices. Among these, the evaporator is one of the most important components.

[0003] Evaporators are classified into circulating, single-pass, and direct-contact types based on the movement of the solution within them. Different evaporators are suited for different applications. For circulating evaporators, the need for an additional circulation pump makes the piping design relatively complex and increases energy consumption.

[0004] To reduce production costs and subsequent equipment maintenance costs in chemical enterprises, it is necessary to streamline the design of relevant equipment. Streamlining the design of commonly used circulating evaporation equipment in production is a key direction for cost reduction and efficiency improvement.

[0005] Therefore, it is necessary to improve the design of the current evaporation equipment. Utility Model Content

[0006] The purpose of this invention is to improve the design of evaporation equipment used in current chemical production processes, so as to simplify it and achieve the goal of reducing costs and increasing efficiency.

[0007] Specifically, this utility model adopts the following technical solution:

[0008] An evaporation device without a circulating pump, the evaporation device comprising a steam supply system, a negative pressure evaporation system, a heating heat exchange system, a condensation heat exchange system, and a negative pressure vacuum system;

[0009] The steam supply system includes a steam inlet pipe, on which a steam jet pump is installed;

[0010] The negative pressure evaporation system includes a negative pressure evaporation tank, which has a feed pipe for feeding. A demister is installed at the top of the negative pressure evaporation tank, and the demister is connected to a steam jet pump through a pipeline.

[0011] The heating and heat exchange system includes a heating and heat exchanger, which is connected to the negative pressure evaporator through heating and heat exchange pipelines to form a loop; the heating and heat exchanger is connected to the steam jet pump through pipelines; the heating and heat exchanger is located below the negative pressure evaporator.

[0012] The condensing heat exchange system includes a condensing heat exchanger and a cooling tower. The cooling tower and the condensing heat exchanger are connected by a circulation pipeline to form a loop. A vacuum unit is installed on the pipeline after the cooling tower. The condensing heat exchanger is connected to a negative pressure evaporator through a pipeline. A condensate collection tank is installed after the condensing heat exchanger.

[0013] The negative pressure vacuum system includes the aforementioned condenser heat exchanger and condensate collection tank, which is connected to the vacuum unit via pipeline.

[0014] Preferably, the heating heat exchanger is equipped with a heating heat exchange condensate drain pipe, and a steam trap is installed on the heating heat exchange condensate drain pipe.

[0015] Preferably, a condensate drain pipe is installed after the condensate collection tank, and a drain valve is installed on the condensate drain pipe.

[0016] As a preferred option, a level gauge is installed on the negative pressure evaporator.

[0017] Preferably, the bottom of the negative pressure evaporator is equipped with a discharge pipe, which is shared with the pipeline of the heating heat exchanger, and the discharge pipe is equipped with a discharge valve.

[0018] Preferably, the condensate collection tank is equipped with a vent pipe and a vent valve.

[0019] Preferably, a cooling water pump is installed after the vacuum unit.

[0020] Preferably, a feed valve is installed on the feed pipe, a steam valve is installed on the steam inlet pipe, and a jet pump valve is installed between the steam jet pump and the demister.

[0021] Compared with the prior art, the beneficial effects of this application are as follows:

[0022] The circulation pump was simplified, thereby simplifying the system structure and enabling circulating evaporation of the evaporator, thus reducing energy consumption;

[0023] Combining a negative pressure vacuum system with a condensation heat exchange system simplifies the structural design;

[0024] The overall technical solution reduces costs by streamlining design time, while also reducing equipment complexity and facilitating maintenance during the production process. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] In the diagram: 1. Steam supply system.

[0027] 11 Steam inlet pipe, 12 Steam jet pump, 13 Steam valve, 14 Jet pump valve,

[0028] 2. Negative pressure evaporation system

[0029] 21 Negative pressure evaporator, 22 Inlet pipe, 23 Demister, 24 Level gauge, 25 Discharge pipe, 26 Discharge valve, 27 Inlet valve.

[0030] 3. Heating and heat exchange system,

[0031] 31 Heating heat exchanger, 32 Heating heat exchange piping, 33 Heating heat exchange condensate drain piping, 34 Steam trap.

[0032] 4. Condensing heat exchange system,

[0033] 41 Condensing heat exchanger, 42 Cooling tower, 43 Vacuum unit, 44 Condensate collection tank, 45 Condensate discharge pipeline for condensing heat exchanger, 49 Drain valve, 46 Vent pipe, 47 Vent valve, 48 Cooling water pump.

[0034] 5. Negative pressure vacuum system. Detailed Implementation

[0035] The representative embodiments shown in the accompanying drawings will now be further refined. It should be understood that the following description is not intended to limit the embodiments to a single preferred embodiment. Rather, it is intended to cover alternatives, modifications, and equivalents that may be included within the substance and scope of the embodiments defined by the appended claims.

[0036] Our company has developed a pump-free evaporation device. This device eliminates the need for a circulation pump, achieving evaporation circulation and thus energy saving and emission reduction. Furthermore, it combines vacuum and condensation, further simplifying the overall structure. This reduces overall complexity and improves the ease of maintenance and upkeep.

[0037] Specifically, such as Figure 1 As shown, the evaporation equipment includes a steam supply system 1, a negative pressure evaporation system 2, a heating heat exchange system 3, a condensation heat exchange system 4, and a negative pressure vacuum system 5; these systems work together to meet the evaporation processing requirements of chemical products.

[0038] The specific details of the aforementioned systems are as follows.

[0039] First, the evaporation system is heated by steam, thus involving a steam supply system 1, which includes a steam inlet pipe 11, on which a steam valve 13 and a steam jet pump 12 are installed, the steam jet pump 12 being used to increase the pressure of the steam.

[0040] Second, regarding the negative pressure evaporation system 2. The negative pressure evaporation system 2 includes a negative pressure evaporator 21, which has a feed pipe 22 for feeding materials. A feed valve 27 is installed on the feed pipe 22. A demister 23 is installed at the top of the negative pressure evaporator 21. The demister 23 is connected to a steam jet pump 12 via a pipeline, and a jet pump valve 14 is installed on this pipeline. A level gauge 24 is installed on the negative pressure evaporator 21 to assist in feeding. A discharge pipe 25 is installed at the bottom of the negative pressure evaporator 21 for discharging materials, and a discharge valve 26 is installed on the discharge pipe 25.

[0041] Third, regarding the heating and heat exchange system 3. The heating and heat exchange system 3 includes a heating and heat exchanger 31, which is connected to the steam jet pump 12 via a pipeline; and the heating and heat exchanger 31 is connected to the negative pressure evaporator 21 in a loop via a heating and heat exchange pipeline 32; in order to achieve the heating and heat exchange loop, the heating and heat exchanger 31 is designed to be positioned lower than the negative pressure evaporator 21. For simplicity, the heating and heat exchanger 31 is connected to the negative pressure evaporator 21 via a discharge pipe 25, thus simplifying the pipeline design and allowing the discharge and heating / heat exchange pipelines to be shared. A heating and heat exchange condensate discharge pipeline 33 is provided on the heating and heat exchange condensate discharge pipeline 33, and a drain valve 34 is provided on the heating and heat exchange condensate discharge pipeline 33.

[0042] Fourth, regarding the condensing heat exchange system 4. The condensing heat exchange system 4 includes a condensing heat exchanger 41 and a cooling tower 42. The cooling tower 42 and the condensing heat exchanger 41 are connected by a circulation pipeline to form a loop. A vacuum unit 43 is installed on the pipeline after the cooling tower 42, and a cooling water pump 48 is installed after the vacuum unit 43. The condensing heat exchanger 41 is connected to the negative pressure evaporator 21 through a pipeline, more specifically, to the demister 23. A condensate collection tank 44 is installed after the condensing heat exchanger 41. A condensate discharge pipeline 45 is installed after the condensate collection tank 44, and a drain valve 49 is installed on the condensate discharge pipeline 45. A vent pipe 46 is installed on the condensate collection tank 44, and a vent valve 47 is installed on the vent pipe 46.

[0043] Fifth, regarding the negative pressure vacuum system 5. The negative pressure vacuum system 5 includes the aforementioned condenser heat exchanger 41 and condensate collection tank 44, which is connected to the vacuum unit 43 via pipelines.

[0044] The technical solution described in this application simplifies the circulating pump and combines the negative pressure vacuum system 5 with the condensation heat exchange system 4. This achieves circulating evaporation in the evaporation equipment. The overall technical solution reduces costs by simplifying design time and also reduces equipment complexity, facilitating maintenance during production.

[0045] It will be obvious to those skilled in the art that, based on the above teachings, certain modifications, combinations, and variations can be made.

Claims

1. An evaporation device without a circulating pump, characterized in that: The evaporation equipment includes a steam supply system (1), a negative pressure evaporation system (2), a heating heat exchange system (3), a condensation heat exchange system (4), and a negative pressure vacuum system (5). The steam supply system (1) includes a steam inlet pipe (11) and a steam jet pump (12) is installed on the steam inlet pipe (11). The negative pressure evaporation system (2) includes a negative pressure evaporator (21), which has a feed pipe (22) for feeding. A demister (23) is provided on the top of the negative pressure evaporator (21), and the demister (23) is connected to the steam jet pump (12) through a pipeline. The heating and heat exchange system (3) includes a heating heat exchanger (31), which is connected to the negative pressure evaporator (21) through a heating heat exchange pipeline (32) to form a loop; the heating heat exchanger (31) is connected to the steam jet pump (12) through a pipeline; the heating heat exchanger (31) is located below the negative pressure evaporator (21). The condensing heat exchange system (4) includes a condensing heat exchanger (41) and a cooling tower (42). The cooling tower (42) and the condensing heat exchanger (41) are connected by a circulation pipeline to form a loop. A vacuum unit (43) is installed on the pipeline after the cooling tower (42). The condensing heat exchanger (41) is connected to the negative pressure evaporator (21) through a pipeline. A condensate collection tank (44) is installed after the condensing heat exchanger (41). The negative pressure vacuum system (5) includes the above-mentioned condenser heat exchanger (41) and condensate collection tank (44), which is connected to the vacuum unit (43) through a pipeline.

2. The pumpless evaporation device according to claim 1, characterized in that: The heating heat exchanger (31) is equipped with a heating heat exchange condensate drain pipe (33), and a drain valve (34) is installed on the heating heat exchange condensate drain pipe (33).

3. The pumpless evaporation device according to claim 1, characterized in that: A condensate collection tank (44) is provided with a condensate discharge pipe (45) for condensate heat exchange, and a drain valve (49) is provided on the condensate discharge pipe (45).

4. The pumpless evaporation device according to claim 1, characterized in that: A level gauge (24) is installed on the negative pressure evaporator (21).

5. The pumpless evaporation device according to claim 1, characterized in that: The bottom of the negative pressure evaporator (21) is provided with a discharge pipe (25), which is shared with the pipeline of the heating heat exchanger (31). The discharge pipe (25) is provided with a discharge valve (26).

6. The pumpless evaporation device according to claim 1, characterized in that: A vent pipe (46) is provided on the condensate collection tank (44), and a vent valve (47) is provided on the vent pipe (46).

7. The pumpless evaporation device according to claim 1, characterized in that: A cooling water pump (48) is installed after the vacuum unit (43).

8. The pumpless evaporation device according to claim 1, characterized in that: A feed valve (27) is installed on the feed pipe (22), a steam valve (13) is installed on the steam inlet pipe (11), and a jet pump valve (14) is installed between the steam jet pump (12) and the demister (23).

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