Energy-saving single-effect concentration unit
By introducing cascade heat energy utilization and multi-stage separation structure into the single-effect concentrator unit, the problems of low heat energy utilization and incomplete solvent recovery are solved, efficient heat energy utilization and solvent recovery are achieved, and the operating stability and energy efficiency of the equipment are improved.
Patent Information
- Application Number
- CN202421949381.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-08-13
AI Technical Summary
Existing single-effect concentrator units have problems such as low thermal energy utilization, simple heat exchange structure, insufficient vapor-liquid separation efficiency and incomplete solvent recovery, resulting in energy waste and solvent loss.
The combined structure of evaporator, heater, preheater, condenser and cooler is adopted to realize the cascade utilization of steam and preheating of materials. Combined with vapor-liquid pre-separation and multi-stage separation of separator, the thermal energy utilization rate and solvent recovery rate are improved.
It improves thermal energy utilization, enhances heat exchange efficiency, reduces energy consumption, increases solvent recovery rate, reduces material loss, and increases equipment operation stability and lifespan.
Smart Images
Figure CN223464429U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of concentrator, specifically relates to an energy -conserving single -effect condensing unit. BACKGROUND
[0002] Single -effect condensing unit is widely used in pharmaceutical, chemical industry, food industry, is used to the evaporation concentration of solution. The existing single -effect condensing device usually comprises evaporator, condenser and other main components, material is heated in evaporator and produces secondary steam, and the secondary steam is condensed into liquid by condenser. However, the prior art has the following deficiencies:
[0003] Low heat energy utilization rate: the secondary steam produced by the evaporator often directly enters the condenser for condensation, and the heat is not fully utilized, causing energy waste.
[0004] Single heat exchange structure: the material is heated in single stage, and the temperature rising process is insufficient, resulting in high energy consumption of the heater.
[0005] The vapor-liquid separation efficiency is insufficient: part of the equipment lacks effective pre-separation measures, which causes the steam entering the condenser to carry liquid droplets, reduces the heat exchange efficiency, and may cause solvent loss.
[0006] Incomplete solvent recovery: the steam at the outlet of the condenser is not fully cooled, causing solvent loss and environmental emission problems.
[0007] Therefore, an energy -conserving single -effect condensing unit capable of improving heat energy utilization rate, optimizing material heating process, improving vapor-liquid separation effect and improving solvent recovery rate is needed. INVENTION CONTENTS
[0008] To overcome the above technical problems, the utility model provides a kind of low -cost energy -conserving single -effect condensing unit, and evaporates using single effect, simple and convenient, and can fully utilize the heat energy of industrial steam condensate in the equipment operation process, reduce industrial steam consumption.
[0009] The utility model adopts the following technical solutions:
[0010] An energy -conserving single -effect condensing unit, including evaporator, the steam outlet of the evaporator is connected with the steam inlet of heater, and the steam outlet of the heater is connected with the steam inlet of preheater;The liquid outlet of the preheater is connected with the liquid inlet of condenser, and the liquid outlet of the condenser is connected with the liquid inlet of heater, and the liquid outlet of the heater is connected with the liquid inlet of evaporator, and the evaporator is connected with vapor-liquid pre-separation device, and the steam outlet of the vapor-liquid pre-separation device is connected with the vapor-liquid inlet of separator, and the steam outlet of the separator is connected with the steam inlet of condenser, and the steam outlet of the condenser is connected with the steam inlet of cooler, and the solvent outlet of the cooler is connected with the liquid inlet of buffer tank;The liquid outlet of the separator is connected with the backflow port of evaporator.
[0011] Preferably, the cooler is cooled by circulating water.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] Improve the heat energy utilization rate
[0014] The steam generated by the evaporator enters the heater and the preheater in sequence, realizes the step utilization of heat, reduces the external steam consumption and reduces the energy consumption; the condensate of the condenser returns to the heater to utilize the waste heat again, further improves the heat efficiency;
[0015] High heat exchange efficiency
[0016] The material is preheated in the preheater, reduces the one-time heating load of the heater, makes the heat transfer process more sufficient; the steam is treated by the vapor-liquid pre-separation and the separator, and the dryness is high, and the heat transfer performance of the heat exchanger is improved.
[0017] The solvent recovery is sufficient
[0018] The steam at the outlet of the condenser is deeply cooled by the cooler, the recovery rate is high, and the solvent loss and emission are reduced;
[0019] Reduce the material loss
[0020] The liquid outlet of the separator returns to the evaporator, ensures that the material not evaporated completely is treated again, and improves the concentration yield;
[0021] The system runs stably
[0022] The vapor-liquid pre-separation device reduces the load of the separator, the buffer tank balances the liquid outlet flow, reduces the fluctuation, and improves the equipment running stability and service life. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is the schematic diagram of the overall connection relationship of the utility model;
[0024] Figure 2 It is the flow direction schematic diagram of live steam;
[0025] Figure 3 It is the flow direction schematic diagram of raw material liquid;
[0026] Figure 4 It is the flow direction schematic diagram of pure steam and solvent.
[0027] Mark explanation:
[0028] 100, evaporator, 110, industrial steam inlet, 140, concentrated liquid outlet, 150, reflux port; 200, vapor-liquid pre-separation device; 300, separator; 400, preheater, 410, raw material liquid inlet; 440, condensate outlet; 500, heater; 600, condenser, 630, non-condensable gas exhaust port, 700, cooler; 720, solvent outlet, 740, cooling tower circulating water inlet, 750, cooling tower circulating water outlet; 800, buffer tank. DETAILED DESCRIPTION
[0029] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout the whole description, and if not specifically described, the raw materials and equipment used are available in the market or are commonly used in the art, and the methods in the embodiments are conventional methods in the art unless otherwise specified. The embodiments described below by reference to the drawings are exemplary and are used to explain the present application, and cannot be understood as limiting the present application.
[0030] Please refer to Figures 1-4 An energy-saving single-effect concentration unit, comprising an evaporator 100, an evaporator 100, a vapor-liquid pre-separation device 200, a separator 300, a preheater 400, a heater 500, a condenser 600, a cooler 700, and a buffer tank 800, the steam outlet of the evaporator 100 is connected to the steam inlet of the heater 500, and the steam outlet of the heater 500 is connected to the steam inlet of the preheater 400; the liquid outlet of the preheater 400 is connected to the liquid inlet of the condenser 600, the liquid outlet of the condenser 600 is connected to the liquid inlet of the heater 500, the liquid outlet of the heater 500 is connected to the liquid inlet of the evaporator 100, the evaporator 100 is connected to the vapor-liquid pre-separation device 200, and the vapor-liquid pre-separation device 200 is connected to the tube side of the evaporator 100 to form a vapor-liquid pre-separation, the steam outlet of the vapor-liquid pre-separation device 200 is connected to the vapor-liquid inlet of the separator 300, the steam outlet of the separator 300 is connected to the vapor inlet of the condenser 600, the steam outlet of the condenser 600 is connected to the vapor inlet of the cooler 700, the solvent outlet 720 of the cooler 700 is connected to the liquid inlet of the buffer tank 800, and the buffer tank 800 also has a vacuum unit interface and an outlet for solvent recovery; the liquid outlet of the separator 300 is connected to the reflux port 150 of the evaporator 100.
[0031] The cooler 700 is provided with a cooling tower circulating water inlet 740 and a cooling tower circulating water outlet 750, which are cooled by circulating water.
[0032] An energy-saving single-effect concentration unit, when working:
[0033] Please refer to Figure 1(red line), Figure 2 Industrial steam enters the shell side from the industrial steam inlet 110 of the evaporator 100 and exchanges heat with the raw material liquid, and after heat exchange and condensation, high-temperature steam condensate enters the preheater 400 and the heater 500 to exchange heat with the raw material liquid, and finally, after cooling, is discharged from the condensate outlet 440 of the preheater 400;
[0034] Please refer to Figure 1 (blue line), Figure 3 The normal-temperature raw material liquid enters the preheater 400 from the raw material liquid inlet 410 and exchanges heat with the steam condensate, is preliminarily preheated, then flows through the condenser 600 and the heater 500 for further heating, so as to be more easily evaporated, and then enters the evaporator 100 to exchange heat with the industrial steam in the shell side for evaporation, is separated by the corrugated wire demister in the vapor-liquid pre-separation device 200, and becomes secondary steam, and the concentrated liquid discharged from the concentrated liquid outlet 140 is concentrated to the required concentration;
[0035] Please refer to Figure 1 (purple line), Figure 4 The secondary steam separated by the demister enters the external separator 300, the spiral plate vapor-liquid separator 300 separates the secondary steam again, the required pure steam is discharged from the steam outlet, the liquid is collected along the cylinder wall and discharged from the liquid outlet, and the liquid returns to the evaporator 100 through the reflux port 150, so as to achieve the ideal separation effect; the pure steam from the separator 300 flows through the condenser 600 and the cooler 700 for cooling, is discharged from the solvent outlet 720 to the buffer tank 800, and finally, the solvent is recovered to realize the recycling of the solvent, and the uncondensed gas is discharged from the uncondensed gas discharge port 630.
[0036] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and deformations can be made to the above embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.
Claims
1. An energy efficient single-effect chiller unit comprising an evaporator, characterized by, The steam outlet of the evaporator is connected to the steam inlet of a heater, the steam outlet of the heater is connected to the steam inlet of a preheater; the liquid outlet of the preheater is connected to the liquid inlet of a condenser, the liquid outlet of the condenser is connected to the liquid inlet of the heater, the liquid outlet of the heater is connected to the liquid inlet of the evaporator, the evaporator is connected to a vapor-liquid pre-separation device, the vapor outlet of the vapor-liquid pre-separation device is connected to the vapor-liquid inlet of a separator, the vapor outlet of the separator is connected to the vapor inlet of the condenser, the vapor outlet of the condenser is connected to the vapor inlet of a cooler, the solvent outlet of the cooler is connected to the liquid inlet of a buffer tank; the liquid outlet of the separator is connected to the reflux inlet of the evaporator.
2. The energy efficient single-stage chiller unit of claim 1, wherein, The cooler is cooled by circulating water.