An energy-saving device for comprehensive utilization of feed concentration flash steam ethanol distillation

Abstract

This invention provides an energy-saving device for the comprehensive utilization of feed concentration flash evaporation steam and ethanol distillation. It includes an energy-saving mechanism installed between the flash chamber and the inlet of the ethanol distillation equipment to mechanically compress the steam generated in the flash chamber and transport it into the ethanol distillation equipment. This invention solves the problem of excess heat during the concentration evaporation system by installing this energy-saving mechanism between the flash chamber and the inlet of the ethanol distillation equipment. Excess heat is correctly guided to the ethanol distillation section for reuse, reducing steam consumption in the distillation section. Simultaneously, it avoids injecting water into the system, reducing water waste and pressure on the wastewater treatment plant.

Description

Technical Field

[0001] This utility model relates to the technical field of energy-saving equipment for comprehensive utilization of ethanol distillation, specifically to an energy-saving device for comprehensive utilization of feed concentration flash steam ethanol distillation. Background Technology

[0002] The 6-effect 10-body evaporation unit currently used in the workshop is a relatively advanced concentration evaporation unit in China. It mainly uses the exhaust steam generated in the drying section as energy to evaporate the clear liquid separated by the centrifuge (with a dry matter content of about 5%). The final product is a concentrated liquid with a dry matter content of about 30%. The evaporated water is transported to the sewage treatment workshop for treatment to meet national discharge standards before being discharged.

[0003] In this type of evaporation device, except for the 2nd and 2nd effects which directly receive heat from the dry exhaust steam, the other effects use the flash steam from the previous effect as a heat source for heating and evaporation, and so on. This type of concentration evaporation device has relatively advanced performance and strong evaporation capacity. During the production process, there is often a shortage of raw materials (clarified liquid). Since the energy source (dry exhaust steam) is generated in a fixed amount and cannot be adjusted, the only option is to inject water into the system to maintain continuous production of the evaporation and concentration system, in order to avoid the phenomenon of excessive material concentration in the system causing scorching or blockage of heat exchangers and pipes.

[0004] However, injecting water into the system is an extremely flawed approach, as the primary function of this evaporation system is to evaporate the water in the clarified liquid to increase the dry matter content. Therefore, repeatedly injecting water to achieve evaporation with an excessive heat source not only results in a significant waste of water resources and the system's own heat, but also increases the pressure on the wastewater treatment plant, wasting unnecessary costs. Utility Model Content

[0005] In view of this, this utility model provides an energy-saving device for the comprehensive utilization of feed concentration flash steam and ethanol distillation. By installing an energy-saving mechanism between the flash chamber and the inlet of the ethanol distillation equipment to mechanically compress the steam generated in the flash chamber and transport it into the ethanol distillation equipment, it solves the problem of excess heat during the concentration evaporation system's production process. This correctly guides the excess heat to the ethanol distillation section for reuse, thereby reducing steam consumption in the distillation section. Simultaneously, it avoids injecting water into the system, reducing water waste and pressure on the wastewater treatment plant.

[0006] To address the aforementioned technical problems, this utility model provides an energy-saving device for the comprehensive utilization of feed concentration flash evaporation steam and ethanol distillation. It includes an energy-saving mechanism installed between the flash chamber and the inlet of the ethanol distillation equipment to mechanically compress the steam generated in the flash chamber and transport it into the ethanol distillation equipment. This utility model solves the problem of excess heat during the concentration evaporation system's production process by installing this energy-saving mechanism between the flash chamber and the inlet of the ethanol distillation equipment. The excess heat is correctly guided to the ethanol distillation section for reuse, reducing steam consumption in the distillation section and significantly saving energy.

[0007] The energy-saving mechanism includes an air inlet pipe located at the outlet pipe at the top of the flash chamber. At the other end of the air inlet pipe is a pressurizing fan for mechanically compressing the steam inside the flash chamber. The outlet of the pressurizing fan is connected to the air inlet of the distillation equipment. This invention uses the pressurizing fan to mechanically compress the flash steam (typically at 80°C and 47 kPa) inside the flash chamber. After being pressurized by the pressurizing fan, the outlet steam (temperature increased to approximately 88°C and pressure to 65 kPa) has its pressure, temperature, and enthalpy all increased, allowing it to be transported to the ethanol distillation section for ethanol distillation. This significantly saves energy, adds a new heat source to the ethanol distillation section, and correspondingly reduces the use of live steam.

[0008] A booster pipe is installed between the air intake pipe and the air inlet of the booster fan. The booster pipe is a tubular structure with a diameter larger on the side connected to the air intake pipe than on the side connected to the air inlet of the booster fan. This design can reduce the pipe diameter of the booster pipe, accelerate the flow rate of the flash steam, and promote its rapid heating and pressurization, making it more efficient and convenient.

[0009] The booster pipe and the booster fan are detachably connected by an expansion joint. The expansion joint can effectively prevent the connection between the booster pipe and the booster fan from being leaky or even cracked due to thermal expansion and contraction, making it safer, more convenient and improving the service life of the pipe.

[0010] The pressurization pipe and the expansion joint are detachably connected by flanges and bolts. The pressurization pipe is equipped with a demister to remove impurities from the exhaust gas in the intake pipe. The demister is equipped with a water pipe connected to the outlet of a water pump. Water from the water tank is introduced into the water pipe by the water pump and finally sprayed into the demister, which can remove impurities from the exhaust gas in the intake pipe, making it more convenient and safe.

[0011] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0012] 1. This utility model solves the problem of excess heat in the concentration evaporation system by installing an energy-saving mechanism between the flash chamber and the inlet of the ethanol distillation equipment. This mechanism mechanically compresses the steam generated in the flash chamber and transports it into the ethanol distillation equipment. The excess heat is then correctly guided to the ethanol distillation section for reuse, adding a new heat source to the distillation section and correspondingly reducing the use of live steam, thus reducing steam consumption in the distillation section. Simultaneously, it avoids injecting water into the system, reducing water waste and pressure on the wastewater treatment plant. The feed plant also reduces drainage into the system, saving water resources and maintaining stable production throughout the entire plant.

[0013] 2. This utility model can mechanically compress the flash steam (generally at a temperature of 80℃ and a pressure of 47KP) in the flash chamber using a pressurizing fan. Then, through the pressurizing action of the pressurizing fan, the pressure, temperature, and enthalpy of the outlet steam (temperature increased to about 88℃ and pressure of 65KP) are all increased. It is then transported to the ethanol distillation section to participate in the ethanol distillation operation, which greatly saves energy, adds a new heat energy source to the ethanol distillation section, and correspondingly reduces the use of live steam.

[0014] 3. Expansion joints can effectively prevent the connection between the booster pipe and the booster fan from leaking or even cracking due to thermal expansion and contraction, making it safer, more convenient, and extending the service life of the pipe.

[0015] 4. The diameter of the side of the booster pipe that connects to the intake pipe is larger than the diameter of the side that connects to the air inlet of the booster fan. This design reduces the pipe diameter of the booster pipe, accelerates the flow rate of the flash steam, and promotes rapid heating and pressurization, making it more efficient and convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the energy-saving device for comprehensive utilization of feed concentration flash evaporation steam ethanol distillation according to this utility model;

[0017] Figure 2 This is an enlarged view of the structure at point A of this utility model;

[0018] Figure 3 This is a front view of the energy-saving device for comprehensive utilization of feed concentration flash steam ethanol distillation according to this utility model.

[0019] Explanation of reference numerals in the attached drawings: 100, energy-saving mechanism; 101, air intake pipe; 102, pressurizing fan; 103, pressurizing pipe; 104, expansion joint; 105, demister; 106, water pipe. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-3 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0021] like Figure 1-3 As shown: This embodiment provides an energy-saving device for the comprehensive utilization of feed concentration flash steam ethanol distillation, including an energy-saving mechanism 100 installed between the flash chamber and the inlet of the ethanol distillation equipment for mechanically compressing the steam generated in the flash chamber and conveying it into the ethanol distillation equipment. This utility model solves the problem of excess heat source during the production process of the concentration evaporation system by setting the energy-saving mechanism 100 between the flash chamber and the inlet of the ethanol distillation equipment for mechanically compressing the steam generated in the flash chamber and conveying it into the ethanol distillation equipment. It correctly guides the excess heat source to the ethanol workshop distillation section for reuse, thereby reducing the steam consumption problem in the distillation section and greatly saving energy.

[0022] According to one embodiment of the present invention, such as Figure 1-3 As shown, the energy-saving mechanism 100 includes an air inlet pipe 101 located at the outlet pipe at the top of the flash chamber. At the other end of the air inlet pipe 101 is a pressurizing fan 102 for mechanically compressing the steam in the flash chamber. The outlet of the pressurizing fan 102 is connected to the air inlet of the distillation equipment. This invention can mechanically compress the flash steam (typically at 80°C and 47 kPa) in the flash chamber using the pressurizing fan 102. After being pressurized by the pressurizing fan 102, the outlet steam (temperature increased to approximately 88°C and pressure to 65 kPa) has its pressure, temperature, and enthalpy all increased, allowing it to be transported to the ethanol distillation section for ethanol distillation. This significantly saves energy, adds a new heat source to the ethanol distillation section, and correspondingly reduces the use of live steam.

[0023] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, a booster pipe 103 is provided between the air intake pipe 101 and the air inlet of the booster fan 102. The booster pipe 103 is a tubular structure in which the diameter of the side connected to the air intake pipe 101 is larger than the diameter of the side connected to the air inlet of the booster fan 102. This design can reduce the pipe diameter of the booster pipe 103, thereby accelerating the flow rate of the flash steam and promoting its rapid heating and pressurization, making it more efficient and convenient.

[0024] According to another embodiment of the present invention, such as Figure 1 and Figure 3 As shown, the booster pipe 103 and the booster fan 102 are detachably connected together by an expansion joint 104. The expansion joint 104 can effectively prevent the connection between the booster pipe 103 and the booster fan 102 from being poorly sealed or even cracked due to thermal expansion and contraction, making it safer and more convenient and improving the service life of the pipe.

[0025] The booster pipe 103 and the expansion joint 104 are detachably connected together by a flange and bolts. The booster pipe 103 is equipped with a demister 105 to remove impurities from the exhaust gas in the intake pipe 101. The demister 105 is equipped with a water pipe 106 that is connected to the outlet of a water pump. Water from the water tank is introduced into the water pipe 106 by the water pump and finally sprayed into the demister 105, which can remove impurities from the exhaust gas in the intake pipe 101, making it more convenient and safe.

[0026] How to use this utility model:

[0027] First, it needs to be clarified that the energy-saving device involved in this utility model is mainly used to solve the problem of excess energy in the production process of the concentration evaporation system. This utility model takes ethanol distillation in a feed workshop as an example to describe its usage method in detail. When it is necessary to recover the heat of the ethanol distillation section in the feed workshop, first connect the air inlet pipe 101 to the exhaust port of the flash chamber, then connect the larger diameter end of the pressurization pipe 103 to the other end of the air inlet pipe 101, connect the smaller diameter end of the pressurization pipe 103 to the expansion joint 104, then connect the other end of the expansion joint 104 to the air intake of the pressure blower 102, then connect the air outlet of the pressure blower 102 to another expansion joint 104, then connect the outlet of the other expansion joint 104 to the inlet of the distillation equipment, and then the flash chamber can be started to work. After distillation for a period of time, start The pressurizing fan 102 operates, mechanically compressing the flash steam (typically at 80°C and 47 kPa) in the flash chamber. After being pressurized by the fan, the outlet steam (temperature increased to approximately 88°C and pressure to 65 kPa) experiences increased pressure, temperature, and enthalpy, and is then transported to the ethanol distillation section for ethanol distillation. This invention solves the problem of excess heat in the concentration evaporation system by installing an energy-saving mechanism 100 between the flash chamber and the inlet of the ethanol distillation equipment. This mechanism mechanically compresses the steam generated in the flash chamber and transports it into the ethanol distillation equipment, thus resolving the issue of excess heat during production. Excess heat is correctly guided to the ethanol distillation section for reuse, providing a new heat source and reducing the use of live steam, thereby reducing steam consumption in the distillation section. Simultaneously, it avoids injecting water into the system, reducing water waste and pressure on the wastewater treatment plant. The feed plant also reduces drainage into the system, conserving water resources and maintaining stable production throughout the entire plant.

[0028] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An energy-saving device for comprehensive utilization of feed concentration flash evaporation steam ethanol distillation, characterized in that: Includes an energy-saving mechanism (100) installed between the flash chamber and the inlet of the ethanol distillation equipment for mechanically compressing the steam generated in the flash chamber and conveying it into the ethanol distillation equipment.

2. The energy-saving device for comprehensive utilization of feed concentration flash evaporation steam ethanol distillation as described in claim 1, characterized in that: The energy-saving mechanism (100) includes an air inlet pipe (101) located at the outlet pipe at the upper part of the flash chamber. The other end of the air inlet pipe (101) is provided with a pressurizing fan (102) for mechanically compressing the steam in the flash chamber. The air outlet of the pressurizing fan (102) is connected to the air inlet of the distillation equipment.

3. The energy-saving device for comprehensive utilization of feed concentration flash evaporation steam ethanol distillation as described in claim 2, characterized in that: A booster pipe (103) is provided between the air intake pipe (101) and the air inlet of the booster fan (102). The booster pipe (103) is a tubular structure in which the diameter of the side connected to the air intake pipe (101) is larger than the diameter of the side connected to the air inlet of the booster fan (102).

4. The energy-saving device for comprehensive utilization of feed concentration flash evaporation steam ethanol distillation as described in claim 3, characterized in that: The pressurization pipe (103) and the pressurization fan (102) are detachably connected together by an expansion joint (104).

5. The energy-saving device for comprehensive utilization of feed concentration flash evaporation steam ethanol distillation as described in claim 4, characterized in that: The pressurization pipe (103) and the expansion joint (104) are detachably connected together by flanges and bolts.

6. The energy-saving device for comprehensive utilization of feed concentration flash evaporation steam ethanol distillation as described in claim 5, characterized in that: The pressurization pipe (103) is equipped with a demister (105) for removing impurities from the exhaust gas in the intake pipe (101), and the demister (105) is equipped with a water pipe (106) connected to the outlet of the water pump.

Images