Quadruple-effect evaporation system with adjustable steam temperature

Abstract

The utility model discloses a four-effect evaporation system with adjustable steam temperature, which comprises a first-effect heater, a first-effect separator, a second-effect heater, a second-effect separator, a third-effect heater, a third-effect separator, a fourth-effect heater, a fourth-effect separator and a condenser, and steam firstly enters the first-effect heater and then sequentially flows through other effect evaporation equipment. A steam adjusting device is arranged on the steam pipe and comprises a temperature detector, a temperature control adjusting valve and a sprayer, the temperature detector is connected with the temperature control adjusting valve, the temperature control adjusting valve is connected with the sprayer, and the temperature detector is located on the front side of the sprayer in the steam advancing direction; the steam temperature in the steam pipe is detected in real time through the temperature detector, when it is detected that the steam temperature is too high, the temperature control regulating valve is automatically opened, and the sprayer starts to spray clean water into the steam pipe, so that the steam temperature can be reduced, and the evaporation and concentration efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concentration and evaporation, in particular to a four-effect evaporation system with adjustable steam temperature. Background Art

[0002] Multi-effect evaporation concentration technology is widely used in the field of chemical production due to its high efficiency and energy saving. In the evaporation process, each evaporator and evaporation process is called one effect. Multi-effect evaporation is to use the secondary steam of the previous effect as the heating steam of the next effect. Multi-effect evaporation can greatly save the consumption of heating steam. In the entire evaporation concentration process, the temperature of the steam affects the quality of the final crystallized product. Therefore, it is very important to control the steam temperature. However, the existing evaporation device cannot adjust the temperature of the steam, and the efficiency of evaporation concentration is low. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide a four-effect evaporation system with adjustable steam temperature, so as to solve the problem that the existing evaporation device cannot adjust the steam temperature and has low evaporation concentration efficiency.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a four-effect evaporation system with adjustable steam temperature, including a first-effect heater, a first-effect separator, a second-effect heater, a second-effect separator, a third-effect heater, a third-effect separator, a fourth-effect heater, a fourth-effect separator and a condenser;

[0005] The steam inlet of the first-effect heater is connected to the steam pipe, the steam outlet of the first-effect heater is connected to the steam inlet of the first-effect separator, the steam outlet of the first-effect separator is connected to the steam inlet of the second-effect heater, the steam outlet of the second-effect heater is connected to the steam inlet of the second-effect separator, the steam outlet of the second-effect separator is connected to the steam inlet of the triple-effect heater, the steam outlet of the triple-effect heater is connected to the feed port of the triple-effect separator, the steam outlet of the triple-effect separator is connected to the steam inlet of the quadruple-effect heater, the steam outlet of the quadruple-effect heater is connected to the steam inlet of the quadruple-effect separator, the steam outlet of the quadruple-effect separator is connected to the steam inlet of the condenser, and the condensation outlet of the condenser is connected to the return pipe;

[0006] A steam regulating device is provided on the steam pipe, and the steam regulating device includes a temperature detector, a temperature control valve and a sprayer. The temperature detector is connected to the temperature control valve, and the temperature control valve is connected to the sprayer. In the direction of steam travel, the temperature detector is located in front of the sprayer; the temperature detector is used to detect the temperature in the steam pipe, and the temperature control valve is used to control the opening and closing of the sprayer according to the temperature detected by the temperature detector. The sprayer is opened to spray clean water into the steam pipe.

[0007] In some embodiments, the spraying direction of the sprayer is consistent with the extending direction of the steam pipe, and the central axis of the sprayer coincides with the central axis of the steam pipe.

[0008] In some embodiments, the system also includes a single-effect condensation water pump, the water inlet of the single-effect condensation water pump is connected to the condensation outlet of the single-effect heater, the water outlet of the single-effect condensation water pump is respectively connected to the water inlet of the return pipe and the temperature control valve, and the single-effect condensation water pump is used to extract the condensation water inside the single-effect heater and transport the extracted condensation water to the return pipe and the sprinkler.

[0009] In some embodiments, the condensation outlet of the second-effect heater is connected to the condensation inlet of the triple-effect heater, the condensation outlet of the triple-effect heater is connected to the condensation inlet of the quadruple-effect heater, the condensation outlet of the quadruple-effect heater is connected to the water inlet of the quadruple-effect condensation water pump, and the water outlet of the quadruple-effect condensation water pump is connected to the return pipe.

[0010] In some embodiments, the condensation outlet of the condenser is also connected to a terminal condensation water pump before being connected to the return pipe, the water inlet of the terminal condensation water pump is connected to the condensation outlet of the condenser, and the water outlet of the terminal condensation water pump is connected to the return pipe.

[0011] In some embodiments, the exhaust port of the condenser is connected to the air inlet of a vacuum pump, and the air outlet of the vacuum pump is connected to an exhaust pipe. The vacuum pump is used to evacuate the gas inside the system.

[0012] The beneficial effects of the utility model are as follows: in the utility model, a steam regulating device is arranged on the steam pipe, the steam regulating device comprises a temperature detector, a temperature control regulating valve and a sprayer, the temperature detector is connected with the temperature control regulating valve, the temperature control regulating valve is connected with the sprayer, and in the direction of steam travel, the temperature detector is located at the front side of the sprayer; the steam temperature in the steam pipe is detected in real time by the temperature detector, when it is detected that the steam temperature is too high, the temperature control regulating valve is automatically opened, and the sprayer starts to spray clean water into the steam pipe, thereby reducing the temperature of the steam and improving the efficiency of evaporation and concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0014] Figure 2 It is a structural schematic diagram of a steam regulating device according to an embodiment of the utility model;

[0015] Figure 3 This is a schematic structural diagram of a first-effect heater according to an embodiment of the utility model;

[0016] Figure 4 This is a schematic structural diagram of a first-effect separator according to an embodiment of the utility model;

[0017] Figure 5 This is a schematic diagram of the structure of a two-effect heater according to an embodiment of the present utility model;

[0018] Figure 6This is a schematic diagram of the structure of a two-effect separator in accordance with an embodiment of the present utility model;

[0019] Figure 7 This is a schematic diagram of the structure of a triple-effect heater according to an embodiment of the present utility model;

[0020] Figure 8 It is a structural schematic diagram of a triple-effect separator in one embodiment of the utility model;

[0021] Fig. 9 This is a schematic diagram of the structure of a four-effect heater according to an embodiment of the present utility model;

[0022] Fig.10 This is a schematic diagram of the structure of a four-effect separator according to the first embodiment of the utility model;

[0023] Fig.11 It is a structural schematic diagram of a condenser according to an embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0026] Figure 1-Figure 11 The embodiment of the four-effect evaporation system with adjustable steam temperature of the utility model is shown, comprising a first-effect heater 1, a first-effect separator 2, a second-effect heater 3, a second-effect separator 4, a third-effect heater 5, a third-effect separator 6, a fourth-effect heater 7, a fourth-effect separator 8 and a condenser 9;

[0027] The steam inlet 11 of the first-effect heater 1 is connected to the steam pipe 10, the steam outlet 12 of the first-effect heater 1 is connected to the steam inlet 21 of the first-effect separator 2, the steam outlet 22 of the first-effect separator 2 is connected to the steam inlet 31 of the second-effect heater 3, the steam outlet 32 ​​of the second-effect heater 3 is connected to the steam inlet 41 of the second-effect separator 4, the steam outlet 42 of the second-effect separator 4 is connected to the steam inlet 51 of the triple-effect heater 5, the steam outlet 52 of the triple-effect heater 5 is connected to the feed port 62 of the triple-effect separator 6, the steam outlet 61 of the triple-effect separator 6 is connected to the steam inlet 71 of the quadruple-effect heater 7, the steam outlet 72 of the quadruple-effect heater 7 is connected to the steam inlet 81 of the quadruple-effect separator 8, the steam outlet 82 of the quadruple-effect separator 8 is connected to the steam inlet 91 of the condenser 9, and the condensation outlet 92 of the condenser 9 is connected to the return pipe 20.

[0028] The steam pipe 10 is provided with a steam regulating device 30, which includes a temperature detector 301, a temperature control regulating valve 302 and a sprayer 303. The temperature detector 301 is connected to the temperature control regulating valve 302, and the temperature control regulating valve 302 is connected to the sprayer 303. In the direction of steam travel, that is, Figure 2 In the direction indicated by the middle arrow, the temperature detector 301 is located at the front side of the sprayer 303; the temperature detector 301 is used to detect the temperature in the steam pipe 10, and the temperature control valve 302 is used to control the opening and closing of the sprayer 303 according to the temperature detected by the temperature detector 301. The sprayer 303 is opened to spray clean water into the steam pipe 10.

[0029] In the utility model, a steam regulating device 30 is arranged on the steam pipe 10, and the steam regulating device 30 includes a temperature detector 301, a temperature control regulating valve 302 and a sprayer 303. The temperature detector 301 is connected to the temperature control regulating valve 302, and the temperature control regulating valve 302 is connected to the sprayer 303. In the direction of steam travel, the temperature detector 301 is located in front of the sprayer 303; the steam temperature in the steam pipe 10 is detected in real time by the temperature detector 301. When it is detected that the steam temperature is too high, the temperature control regulating valve 302 is automatically opened, and the sprayer 303 starts to spray clean water into the steam pipe 10, thereby reducing the temperature of the steam and improving the efficiency of evaporation and concentration.

[0030] It should be noted that the steam coming out of the steam outlet 52 of the triple-effect heater 5 is accompanied by some materials, and the steam and materials enter the triple-effect separator 6 together from the feed port 62 of the triple-effect separator 6. The above is an introduction to the flow process of steam in the quadruple-effect evaporation system. The steam is introduced by the steam pipe 10, and then enters the first-effect heater 1, the first-effect separator 2, the second-effect heater 3, the second-effect separator 4, the triple-effect heater 5, the triple-effect separator 6, the quadruple-effect heater 7, the quadruple-effect separator 8 and the condenser 9 in sequence, making full use of the heat of the steam. The flow process of materials in the quadruple-effect evaporation system is introduced in detail below in combination with the connection relationship between each device.

[0031] The feed port 73 of the four-effect heater 7 is connected to the feed pipe 80, the discharge port 74 of the four-effect heater 7 and the discharge port 83 of the four-effect separator 8 are connected to the feed port of the four-effect circulation pump 84 and the feed port of the first-effect feed pump 17, the discharge port of the four-effect circulation pump 84 is connected to the return port 75 of the four-effect heater 7, the discharge port of the first-effect feed pump 17 is connected to the feed port 13 of the first-effect heater 1, the discharge port 14 of the first-effect heater 1 and the discharge port 23 of the first-effect separator 2 are connected to the feed port of the first-effect circulation pump 16, and the discharge port of the first-effect circulation pump 16 is connected to the feed port 13 of the first-effect heater 1 and the second-effect heater 3 The feed port 33 of the second-effect heater 3; the discharge port 34 of the second-effect heater 3 and the discharge port 43 of the second-effect separator 4 are connected to the feed port of the second-effect circulation pump 36, and the discharge port of the second-effect circulation pump 36 is connected to the feed port 33 of the second-effect heater 3 and the feed port 53 of the triple-effect heater 5; the steam outlet 52 of the triple-effect heater 5 is connected to the feed port 62 of the triple-effect separator 6, and the discharge port 63 of the triple-effect separator 6 is connected to the feed port of the triple-effect circulation pump 56 and the feed port of the triple-effect discharge pump 57, the discharge port of the triple-effect circulation pump 56 is connected to the feed port 53 of the triple-effect heater 5, and the discharge port of the triple-effect discharge pump 57 is connected to the discharge pipe 80.

[0032] The material is first introduced into the system through the feed pipe 80, and then flows and circulates in the four-effect, one-effect, two-effect and three-effect evaporation equipment in turn. After being concentrated through multi-effect evaporation, it is finally discharged from the discharge pipe 90, and the efficiency of evaporation and concentration is higher.

[0033] In some embodiments, in combination Figure 2 As shown, there can be multiple sprinklers 303, the spraying direction of the sprinkler 303 is consistent with the extension direction of the steam pipe 10, and the central axis 3031 of the sprinkler 303 coincides with the central axis 101 of the steam pipe 10. By reasonably setting the position of the sprinkler 303, the contact effect between the clean water and the steam is better when the sprinkler 303 sprays water, and the spray cooling speed is faster.

[0034] In some embodiments, in combination Figure 1 and Figure 2 As shown, the system further includes a first-effect condensation water pump 40, the water inlet of the first-effect condensation water pump 40 is connected to the condensation outlet 15 of the first-effect heater 1, and the water outlet of the first-effect condensation water pump 40 is respectively connected to the return pipe 20 and the water inlet 3021 of the temperature control regulating valve 302, and the first-effect condensation water pump 40 is used to extract the condensation water inside the first-effect heater 1, and transport the extracted condensation water to the return pipe 20 and the sprayer 303. The condensation water generated in the first-effect heater 1 is extracted by the first-effect condensation water pump 40, and a part of the condensation water is discharged into the return pipe 20, and can be re-transported to the system through the return pipe 20 for repeated use; the other part of the condensation water can be discharged to the sprayer 303 for spraying by the sprayer 303, which is more energy-saving and environmentally friendly.

[0035] In some embodiments, in combination Figure 1-Figure 11 As shown, the condensation outlet 35 of the second-effect heater 3 is connected to the condensation inlet 54 of the triple-effect heater 5, the condensation outlet 55 of the triple-effect heater 5 is connected to the condensation inlet 76 of the quadruple-effect heater 7, the condensation outlet 77 of the quadruple-effect heater 7 is connected to the water inlet of the quadruple-effect condensation water pump 50, and the water outlet of the quadruple-effect condensation water pump 50 is connected to the return pipe 20. The condensation water in the second-effect heater 3, the triple-effect heater 5 and the quadruple-effect heater 7 is promptly pumped out by the quadruple-effect condensation water pump 50, and then uniformly discharged to the return pipe 20, so as to prevent the condensation water from accumulating in the evaporation equipment and improve the evaporation efficiency.

[0036] In some embodiments, in combination Figure 1 and Fig.11 As shown, the condensation outlet 92 of the condenser 9 is also connected to the terminal condensation water pump 60 before being connected to the return water pipe 20, the water inlet of the terminal condensation water pump 60 is connected to the condensation outlet 92 of the condenser 9, and the water outlet of the terminal condensation water pump 60 is connected to the return water pipe 20. The condensation water in the condenser 9 is pumped out to the return water pipe 20 by the terminal condensation water pump 60, which speeds up the circulation of the condensation water and achieves a better condensation effect.

[0037] In some embodiments, in combination Figure 1 and Fig.11 As shown, the exhaust port 93 of the condenser 9 is connected to the air inlet of the vacuum pump 70, and the air outlet of the vacuum pump 70 is connected to the exhaust pipe 100. The vacuum pump 70 is used to evacuate the gas inside the system. Before the steam is introduced into the entire four-effect evaporation system, the vacuum pump 70 can be used to extract the gas inside the system, so that the entire evaporation process is operated under negative pressure, which improves the heat transfer efficiency between the various effect devices and achieves a better evaporation and concentration effect.

[0038] It can be seen that the utility model discloses a four-effect evaporation system with adjustable steam temperature, including a first-effect heater, a first-effect separator, a second-effect heater, a second-effect separator, a third-effect heater, a third-effect separator, a fourth-effect heater, a fourth-effect separator and a condenser. Steam first enters the first-effect heater and then flows through other evaporation devices in sequence. A steam regulating device is arranged on the steam pipe, and the steam regulating device includes a temperature detector, a temperature control regulating valve and a sprayer. The temperature detector is connected to the temperature control regulating valve, and the temperature control regulating valve is connected to the sprayer. In the direction of steam travel, the temperature detector is located at the front side of the sprayer; the steam temperature in the steam pipe is detected in real time by the temperature detector. When it is detected that the steam temperature is too high, the temperature control regulating valve is automatically opened, and the sprayer starts to spray clean water into the steam pipe, thereby reducing the temperature of the steam and improving the efficiency of evaporation and concentration.

[0039] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A four-effect evaporation system with adjustable steam temperature, characterized in that: It includes a first-effect heater, a first-effect separator, a second-effect heater, a second-effect separator, a third-effect heater, a third-effect separator, a fourth-effect heater, a fourth-effect separator and a condenser; The steam inlet of the first-effect heater is connected to the steam pipe, the steam outlet of the first-effect heater is connected to the steam inlet of the first-effect separator, the steam outlet of the first-effect separator is connected to the steam inlet of the second-effect heater, the steam outlet of the second-effect heater is connected to the steam inlet of the second-effect separator, the steam outlet of the second-effect separator is connected to the steam inlet of the triple-effect heater, the steam outlet of the triple-effect heater is connected to the feed port of the triple-effect separator, the steam outlet of the triple-effect separator is connected to the steam inlet of the quadruple-effect heater, the steam outlet of the quadruple-effect heater is connected to the steam inlet of the quadruple-effect separator, the steam outlet of the quadruple-effect separator is connected to the steam inlet of the condenser, and the condensation outlet of the condenser is connected to the return pipe; The steam pipe is provided with a steam regulating device, which includes a temperature detector, a temperature control valve and a sprayer. The temperature detector is connected to the temperature control valve, and the temperature control valve is connected to the sprayer. In the direction of steam travel, the temperature detector is located in front of the sprayer; the temperature detector is used to detect the temperature in the steam pipe, and the temperature control valve is used to control the opening and closing of the sprayer according to the temperature detected by the temperature detector. The sprayer is opened to spray clean water into the steam pipe.

2. The four-effect evaporation system with adjustable steam temperature according to claim 1, characterized in that: The spraying direction of the sprayer is consistent with the extending direction of the steam pipe, and the central axis of the sprayer coincides with the central axis of the steam pipe.

3. The four-effect evaporation system with adjustable steam temperature according to claim 1, characterized in that: The system also includes a first-effect condensation water pump, a water inlet of the first-effect condensation water pump is connected to the condensation outlet of the first-effect heater, and a water outlet of the first-effect condensation water pump is respectively connected to the return pipe and the water inlet of the temperature control valve. The first-effect condensation water pump is used to extract the condensation water inside the first-effect heater and transport the extracted condensation water to the return pipe and the sprinkler.

4. The four-effect evaporation system with adjustable steam temperature according to claim 3 is characterized in that: The condensation outlet of the second-effect heater is connected to the condensation inlet of the third-effect heater, the condensation outlet of the third-effect heater is connected to the condensation inlet of the fourth-effect heater, the condensation outlet of the fourth-effect heater is connected to the water inlet of the fourth-effect condensation water pump, and the water outlet of the fourth-effect condensation water pump is connected to the return pipe.

5. The four-effect evaporation system with adjustable steam temperature according to claim 4 is characterized in that: The condensation outlet of the condenser is also connected to a terminal condensation water pump before being connected to the return water pipe. The water inlet of the terminal condensation water pump is connected to the condensation outlet of the condenser, and the water outlet of the terminal condensation water pump is connected to the return water pipe.

6. The four-effect evaporation system with adjustable steam temperature according to claim 1, characterized in that: The exhaust port of the condenser is connected to the air inlet of the vacuum pump, and the air outlet of the vacuum pump is connected to the exhaust pipe. The vacuum pump is used to evacuate the gas inside the system.

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