CN203458826U - Control system of novel energy-saving distillation condensation technology - Google Patents
Control system of novel energy-saving distillation condensation technology Download PDFInfo
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- CN203458826U CN203458826U CN201320443044.2U CN201320443044U CN203458826U CN 203458826 U CN203458826 U CN 203458826U CN 201320443044 U CN201320443044 U CN 201320443044U CN 203458826 U CN203458826 U CN 203458826U
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Abstract
The utility model discloses a control system of a novel energy-saving distillation condensation technology. The control system comprises an energy-saving distillation condensation unit and a basic control unit, wherein the energy-saving distillation condensation unit comprises a distiller, a condenser, a preheater, a heat reservoir, a first heat pump and a second heat pump, and the basic control unit comprises pumps F1-F6, stop valves V1-V3, liquid level sensors LS1-LS4, temperature sensors TS1-TS4, pressure sensors PS1 and control points CC1-CC11. The control system has the advantages that latent heat and sensible heat of wastes and retort gas can be recycled to the greatest degree, and the automation, the intelligence and the intellectualization of the process can be realized.
Description
Technical field
The utility model belongs to Chemical Engineering Process Control field, is specifically related to a kind of control system of novel distillation condensation energy-saving technique.
Background technology
Distillation is a kind of thermodynamics separating technology, utilizes each component boiling point difference in mixing material or liquid-solid system, make low boiling component evaporation, then condensation is with the unit process of the whole component of separation.Distillation relates to evaporation and two kinds of operations of condensation.Other separation means, as: extraction, absorption etc., often need to use system components other solvent in addition.Therefore, the advantage of the way of distillation is not need to introduce new impurity.The form of distillation comprises several as follows:
The first, the object of simple distillation is mixed liquor is vaporized gradually and make the timely condensation of steam for example, with the lock out operation of Fractional Collections: manufacture the solid impurity that distilled water wherein dissolves with place to go, also have, manufacture Spirit to concentrate alcohol, remove part moisture.
The second, rectifying (fractionation) is in an equipment, to carry out repeatedly part vaporization and partial condensation, with separated liquefied mixture, wherein, realizes the lock out operation of high-purity and high-recovery by refluxing.For each component volatilization degree, equate or close mixed liquor, in order to increase the relative volatility between each component, can when rectifying is separated, add solvent or salt, this class lock out operation is called special distillation, comprising sequence of constant boiling and rectification, extracting rectifying and salt adding rectifying; When rectifying, between each component of mixed liquor, there is in addition chemical reaction, be called reactive distillation.Rectifying is most widely used general, such as: oil can be isolated to the various ingredients such as gasoline, diesel oil, kerosene and heavy oil through fractionation.Therefore, distillating method has very important application in industrial production and people's daily life.
The 3rd, distillation is by being subject to the once lock out operation of part vaporization by liquid mixture heating.Conventionally, liquid mixture is heated to uniform temperature under certain pressure, then injects the lower lower container of stage pressure, dilatation suddenly makes partially liq be vaporizated into the process of steam.The system that a plurality of such processes form claims multistage flash evaporation.It is one of major way of manufacturing distilled water or desalinization.Distillation is power consumption process, and the application of heat recovery technology is very crucial.Waste heat refers to the limitation of factors such as being subject to history, technology, theory, in the energy-dissipating device having put into operation, the sensible heat that original design is not used appropriately and latent heat, comprising: high-temp waste gas waste heat, cooling medium waste heat, waste vapour waste water residual heat, high-temperature product and afterheat of slags, chemical reaction waste heat, combustible exhaust gas waste liquid and waste material waste heat etc.According to investigation, the waste heat total resources of every profession and trade account for 17%～67% of its fuel consumption total amount, and the residual heat resources of recoverable are about 60% of waste heat total resources.The recycling approach of waste heat is a lot.In general, comprehensive utilization waste heat is best, is secondly direct utilization, is indirect utilization again.Except high-quality thermal source has important use, in fact, low temperature also can be used for heating or utilize absorption heat pump to improve the quantity of heat or temperature for producing and life.Waste heat recovery apparatus brief review is as follows.The first, heat pipe waste-heat recoverer, is to utilize the efficient heat transfer characteristic of heat pipe and the heat-exchanger rig that environmental suitability is manufactured thereof, and is mainly used in industrial energy saving field, can extensively reclaim the discarded thermal source being present in gaseous state, liquid state, solid state medium.Second, various types of heat exchangers, according to the principle of cold and hot fluid exchange heat and mode, substantially can divide three major types: dividing wall type, hybrid and heat accumulating type, heat exchanger can be used as heater, cooler, condenser, evaporimeter and reboiler etc. in Chemical Manufacture, is widely used.Current heat recovery technology is mainly based on heat is sent to traditional UTILIZATION OF VESIDUAL HEAT IN technology of cryogenic substance from high temperature material.According to the second law of thermodynamics, under nature, heat all can only forward cold place to by heat place forever, has irreversibility.Therefore, traditional heat recovery technology reaches cold and hot two ends and reaches under certain poised state, can not make full use of waste heat.These heat recovery technologies can be summarized as passive type heat recovery technology.Heat pump is that a kind of high potential that utilizes makes heat from low level heat energy, flow to the device of high-order thermal source.Heat pump can extract heat for heat supply from low-temperature heat source.The heating load of heat pump is far longer than the mechanical energy that it consumes, heat pump techniques is a kind of power-saving technology of low temperature heat thus, be a kind of active heat transfer technology, can make full use of low-grade heat source, and common heat recovery technology be difficult to utilize low-grade heat source.Energy based on heat pump techniques reclaims, and is the class new and high technology that environment is got energy, energy-conserving and environment-protective.
summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and a kind of control system of novel distillation condensation energy-saving technique is provided.This system can be recycled the latent heat of waste material and retort gas and sensible heat substantially, and process can realize automation, intellectuality, optimization.
The utility model comprises distillation condensation energy-saving unit and basic control unit.
Distillation condensation energy-saving unit comprises distiller, condenser, preheater, thermal storage device, the first heat pump, the second heat pump.
The first gas input of distiller passes through pipeline air-inlet, and on pipeline, is provided with the second stop valve V2, is provided with the 8th control point CC8, and controls the second stop valve V2 by the 8th control point CC8, and then control pipeline air-inlet on the second stop valve V2; The second input of distiller is connected with one end of the first pump F1 by pipeline, and be provided with the 3rd stop valve V3 between the second input and the pipeline of the first pump F1, on the 3rd stop valve V3, be provided with the 9th control point CC9, the other end of the first pump F1 is connected with the first output of preheater, preheating material in output preheater, and on the first pump F1, be provided with the first control point CC1; The 3rd input of distiller is connected with the end that heats of the first heat pump; The first output of distiller is connected with one end of the second pump F2, and second other end of pump F2 and the first input end of condenser are connected; The second output of distiller is connected with one end of the 5th pump F5 by pipeline, on pipeline between the second output and the 5th pump F5, be provided with the first stop valve V1, on the first stop valve V1, be provided with the 7th control point CC7, on the 5th pump F5, be provided with the 5th control point CC5, the 5th other end of pump F5 and the first input end of thermal storage device are connected.On the sidewall of described distiller, be provided with the first pressure sensor PS1, the first liquid level sensor LS1 and the first temperature sensor TS1.
The first output of condenser is external, and the second output is connected with one end of the 6th pump F6 by pipeline, is provided with the 6th control point CC6 on the 6th pump F6, and the 6th control point CC6 controls output of products by controlling the 6th pump F6; The 3rd output is connected with the heat absorbing end of the second heat pump, and the end that heats of the second heat pump is connected with the first input end of preheater, is provided with the 11 control point CC11 on the second heat pump.On the sidewall of described condenser, be provided with the second liquid level sensor LS2 and the second temperature sensor TS2.
The second input of preheater is connected with one end of the 4th pump F4, is provided with the 4th control point CC4 on the 4th pump F4, and controls the 4th pump F4 suction raw material by the 4th control point CC4.On the sidewall of described preheater, be provided with the 3rd liquid level sensor LS3 and three-temperature sensor TS3.
The first output of thermal storage device is connected with the heat absorbing end of the first heat pump, and the second output is connected with one end of the 3rd pump F3 by pipeline, and is provided with the 3rd control point CC3 on the 3rd pump F3, and by the 3rd control point CC3, controls the 3rd pump F3 and get rid of waste material.On the sidewall of described thermal storage device, be provided with the 4th liquid level sensor LS4 and the 4th temperature sensor TS4.
Distillation condensation energy-saving unit concrete technology flow process is as follows:
Raw material injects the heat absorbing from the second heat pump after preheater and reaches pre-heat effect, preheating material injects the heat temperature absorbing from the first heat pump after distiller and further promotes, part material evaporation, part material becomes the waste material that band has surplus heat, and the raw material of evaporation is injected into condenser, and its heat is siphoned away by the second heat pump, liquefy product, product is discharged by the second output of condenser, and meanwhile, fixed gas is also discharged from the first output of condenser; Band waste heat waste material injects after thermal storage device, and heat is taken away by the first heat pump, final, and waste material is discharged from thermal storage device the second output; In addition, distiller has air inlet to regulate distiller internal pressure, thereby controls the boiling point of raw material, to adapt to the demand of producing different product.
Basic control unit comprises the first pump F1, the second pump F2, the 3rd pump F3, the 4th pump F4, the 5th pump F5, the 6th pump F6, the first stop valve V1, the second stop valve V2, the 3rd stop valve V3, the first liquid level sensor LS1, the second liquid level sensor LS2, the 3rd liquid level sensor LS3, the 4th liquid level sensor LS4, the first temperature sensor TS1, the second temperature sensor TS2, three-temperature sensor TS3, the 4th temperature sensor TS4, the first pressure sensor PS1, the first control point CC1, the second control point CC2, the 3rd control point CC3, the 4th control point CC4, the 5th control point CC5, the 6th control point CC6, the 7th control point CC7, the 8th control point CC8, the 9th control point CC9, the tenth control point CC10, the 11 control point CC11.
The first pump F1 is arranged in the conveyance conduit of preheating material, in the pipeline between preheater the first output and distiller the second input; The second pump F2 is arranged in gasification materiel conveyance conduit, in the pipeline between distiller the first output and condenser first input end; The 3rd pump F3 is arranged in waste material discharge line, in the pipeline being connected with thermal storage device the second output; The 4th pump F4 is arranged in feed line road, in the pipeline being connected with preheater the second input; The 5th pump F5 is arranged in band waste heat waste material conveyance conduit, in the pipeline between distiller the second output and thermal storage device first input end; The 6th pump F6 is arranged in product conveyance conduit, in the pipeline being connected with condenser the second output.
The first stop valve V1 and the same pipeline of the 5th pump F5; Stop valve V2 is arranged in admission line, in the pipeline being connected with distiller first input end; The 3rd stop valve V3 and the same pipeline of the first pump F1.The first liquid level sensor LS1, the first temperature sensor TS1 and the first pressure sensor PS1 are arranged on distiller madial wall; The second liquid level sensor LS2, the second temperature sensor TS2 are arranged on condenser madial wall; The 3rd liquid level sensor LS3, three-temperature sensor TS3 are arranged on preheater madial wall; The 4th liquid level sensor LS4, the 4th temperature sensor TS4 are arranged on thermal storage device madial wall.The first control point CC1, the second control point CC2, the 3rd control point CC3, the 4th control point CC4, the 5th control point CC5, the 6th control point CC6 are connected with the first pump F1, the second pump F2, the 3rd pump F3, the 4th pump F4, the 5th pump F5, the 6th pump F6 respectively, the 7th control point CC7, the 8th control point CC8, the 9th control point CC9 are connected with the first stop valve V1, the second stop valve V2, the 3rd stop valve V3 respectively, and the tenth control point CC10, the 11 control point CC11 are connected with the first heat pump, the second heat pump respectively.
Basic control unit coordinates the concrete technology flow process of distillation condensation energy-saving unit as follows
The 4th pump F4 is transported to raw material in preheater, after preheater preheating, the first pump F1 extracts out and is injected in distiller by the pre-hot sea water in preheater, the part of preheating evaporation of seawater (gasification materiel) is pumped in condenser by the second pump F2, and the 6th pump F6 discharges product from condenser; Band waste heat waste material injects thermal storage device by the 5th pump F5, and the 3rd pump F3 discharges thermal storage device by waste material.The first stop valve V1 plays blocking-up with the effect of the reverse flow of residual heat waste water while closing, when it is connected, keep pipeline unimpeded.The second stop valve V2 plays the effect that blocking-up outside air injects distiller while closing, make distiller inner and outer air pressure consistent when it is opened, and guarantees the smooth injection of distiller or discharges material.The 3rd stop valve V3 plays blocking-up preheating material and from preheater, flows to the effect of distiller while closing.The first liquid level sensor LS1, the first temperature sensor TS1 and the first pressure sensor PS1 are respectively used to detect liquid level, temperature, the pressure in distiller.The second liquid level sensor LS2, the second temperature sensor TS2 are respectively used to detect liquid level, temperature in condenser.The 3rd liquid level sensor LS3, three-temperature sensor TS3 are respectively used to detect liquid level, temperature in preheater.The 4th liquid level sensor LS4, the 4th temperature sensor TS4 are respectively used to detect liquid level, temperature in thermal storage device.
The first control point CC1, the second control point CC2, the 3rd control point CC3, the 4th control point CC4, the 5th control point CC5, the 6th control point CC6 control respectively the first pump F1, the second pump F2, the 3rd pump F3, the 4th pump F4, the 5th pump F5, the 6th pump F6 startup, rotational speed regulation, the action such as stop, thereby regulate the flow of corresponding conveyance conduit material or gas.The 7th control point CC7, the 8th control point CC8, the 9th control point CC9 control respectively the closure or openness action of the first stop valve V1, the second stop valve V2, the 3rd stop valve V3, thereby allow or stop corresponding pipeline material or gas by this pipeline.The tenth control point CC10, the 11 control point CC11 control respectively heat absorption or the refrigeration work consumption of the first heat pump, the second heat pump, obtain different duties or operating point.
The utility model beneficial effect is as follows:
The utility model utilizes heat pump techniques fully the latent heat of product and sensible heat are reclaimed and utilized, and also fully the sensible heat of waste material is reclaimed and is utilized; Heat pump techniques is as active heat transfer technology, and the temperature of permission product and waste material is less than the temperature of raw material out and away, takes full advantage of the self-contained heat energy of raw material and nature energy, is a kind of novel distillation condensation process of obvious energy conservation.
The utility model, for novel process process, has provided the most basic control system, has met the basic controlling demand of distillation condensation process; Wherein, each material, heat transfer, gas flow process are controlled, there is no the control module of redundancy; Meanwhile, allow distiller to work under different pressures, meet distiller as the feature of pressure vessel.
The needs of the utility model based on feedback control system, have configured the most basic detecting unit, meet the demand of the feedback control information of each tank fill level, temperature, have also met the demand of distiller pressure vessel to feedback pressure information; System does not provide flow sensor, is to consider that the rotating speed of pump is a known conditions, can push away the roughly flow of pipeline separately for counter, thereby save unnecessary sensor, has reduced the cost of detecting unit.
The utility model is because used modernization instrumentation and control assembly, user can arrange any control algolithm that meets process requirements, realize automation, intellectuality, optimization and the modernization of technical process, the production efficiency of raising product, capacity usage ratio etc.
The novel distillation condensation energy-saving technique of the utility model based on above-mentioned control and detection system has versatility, after suitably adjusting, can be suitable for producing the demand of different chemical products or daily necessities, such as: alcohol fractionation, medical distilled water, desalinization etc.
In sum, the novel distillation condensation energy-saving technique with basic control scheme that the utility model is announced, can realize automation, intellectuality, optimization and the modernization of distillation condensation process and energy removal process, the production efficiency of raising product, capacity usage ratio etc., there is versatility, can apply, there is good practical value.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram.
In figure, distiller 1, condenser 2, preheater 3, thermal storage device 4, the first heat pump 5, the second heat pump 6.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further elaborated.
As shown in Figure 1, the control system of novel distillation condensation energy-saving technique, comprises distillation condensation energy-saving unit and basic control unit.
Distillation condensation energy-saving unit comprises distiller 1, condenser 2, preheater 3, thermal storage device 4, the first heat pump 5, the second heat pump 6.
The first gas input of distiller 1 passes through pipeline air-inlet, and on pipeline, is provided with the second stop valve V2, is provided with the 8th control point CC8, and controls the second stop valve V2 by the 8th control point CC8, and then control pipeline air-inlet on the second stop valve V2; The second input of distiller 1 is connected with one end of the first pump F1 by pipeline, and be provided with the 3rd stop valve V3 between the second input and the pipeline of the first pump F1, on the 3rd stop valve V3, be provided with the 9th control point CC9, the other end of the first pump F1 is connected with the first output of preheater 3, preheating material in output preheater 3, and on the first pump F1, be provided with the first control point CC1; The 3rd input of distiller 1 is connected with the end that heats of the first heat pump 5; The first output of distiller 1 is connected with one end of the second pump F2, and the other end of the second pump F2 is connected with the first input end of condenser 2; The second output of distiller 1 is connected with one end of the 5th pump F5 by pipeline, on pipeline between the second output and the 5th pump F5, be provided with the first stop valve V1, on the first stop valve V1, be provided with the 7th control point CC7, on the 5th pump F5, be provided with the 5th control point CC5, the other end of the 5th pump F5 is connected with the first input end of thermal storage device 4.On the sidewall of described distiller 1, be provided with the first pressure sensor PS1, the first liquid level sensor LS1 and the first temperature sensor TS1.
The first output of condenser 2 is external, and the second output is connected with one end of the 6th pump F6 by pipeline, is provided with the 6th control point CC6 on the 6th pump F6, and the 6th control point CC6 controls output of products by controlling the 6th pump F6; The 3rd output is connected with the heat absorbing end of the second heat pump 6, and the end that heats of the second heat pump 6 is connected with the first input end of preheater 3, on the second heat pump 6, is provided with the 11 control point CC11.On the sidewall of described condenser 2, be provided with the second liquid level sensor LS2 and the second temperature sensor TS2.
The second input of preheater 3 is connected with one end of the 4th pump F4, is provided with the 4th control point CC4 on the 4th pump F4, and controls the 4th pump F4 suction raw material by the 4th control point CC4.On the sidewall of described preheater 3, be provided with the 3rd liquid level sensor LS3 and three-temperature sensor TS3.
The first output of thermal storage device 4 is connected with the heat absorbing end of the first heat pump 5, and the second output is connected with one end of the 3rd pump F3 by pipeline, and is provided with the 3rd control point CC3 on the 3rd pump F3, and by the 3rd control point CC3, controls the 3rd pump F3 and get rid of waste material.On the sidewall of described thermal storage device 4, be provided with the 4th liquid level sensor LS4 and the 4th temperature sensor TS4.
Distillation condensation energy-saving unit concrete technology flow process is as follows:
Raw material injects the heat absorbing from the second heat pump 6 after preheater and reaches pre-heat effect, preheating material injects the heat temperature absorbing from the first heat pump 5 after distiller and further promotes, part material evaporation, part material becomes the waste material that band has surplus heat, and the raw material of evaporation is injected into condenser, and its heat is siphoned away by the second heat pump 6, liquefy product, product is discharged by the second output of condenser, and meanwhile, fixed gas is also discharged from the first output of condenser; Band waste heat waste material injects after thermal storage device, and heat is taken away by the first heat pump 5, final, and waste material is discharged from thermal storage device the second output; In addition, distiller has air inlet to regulate distiller internal pressure, thereby controls the boiling point of raw material, to adapt to the demand of producing different product.
Basic control unit comprises the first pump F1, the second pump F2, the 3rd pump F3, the 4th pump F4, the 5th pump F5, the 6th pump F6, the first stop valve V1, the second stop valve V2, the 3rd stop valve V3, the first liquid level sensor LS1, the second liquid level sensor LS2, the 3rd liquid level sensor LS3, the 4th liquid level sensor LS4, the first temperature sensor TS1, the second temperature sensor TS2, three-temperature sensor TS3, the 4th temperature sensor TS4, the first pressure sensor PS1, the first control point CC1, the second control point CC2, the 3rd control point CC3, the 4th control point CC4, the 5th control point CC5, the 6th control point CC6, the 7th control point CC7, the 8th control point CC8, the 9th control point CC9, the tenth control point CC10, the 11 control point CC11.
The first pump F1 is arranged in the conveyance conduit of preheating material, in the pipeline between preheater 3 first outputs and distiller 1 second input; The second pump F2 is arranged in gasification materiel conveyance conduit, in the pipeline between distiller 1 first output and condenser 2 first input ends; The 3rd pump F3 is arranged in waste material discharge line, in the pipeline being connected with thermal storage device 4 second outputs; The 4th pump F4 is arranged in feed line road, in the pipeline being connected with preheater 3 second inputs; The 5th pump F5 is arranged in band waste heat waste material conveyance conduit, in the pipeline between distiller 1 second output and thermal storage device 4 first input ends; The 6th pump F6 is arranged in product conveyance conduit, in the pipeline being connected with condenser 2 second outputs.
The first stop valve V1 and the same pipeline of the 5th pump F5; Stop valve V2 is arranged in admission line, in the pipeline being connected with distiller first input end; The 3rd stop valve V3 and the same pipeline of the first pump F1.The first liquid level sensor LS1, the first temperature sensor TS1 and the first pressure sensor PS1 are arranged on distiller madial wall; The second liquid level sensor LS2, the second temperature sensor TS2 are arranged on condenser madial wall; The 3rd liquid level sensor LS3, three-temperature sensor TS3 are arranged on preheater madial wall; The 4th liquid level sensor LS4, the 4th temperature sensor TS4 are arranged on thermal storage device madial wall.The first control point CC1, the second control point CC2, the 3rd control point CC3, the 4th control point CC4, the 5th control point CC5, the 6th control point CC6 are connected with the first pump F1, the second pump F2, the 3rd pump F3, the 4th pump F4, the 5th pump F5, the 6th pump F6 respectively, the 7th control point CC7, the 8th control point CC8, the 9th control point CC9 are connected with the first stop valve V1, the second stop valve V2, the 3rd stop valve V3 respectively, and the tenth control point CC10, the 11 control point CC11 are connected with the first heat pump 5, the second heat pump 6 respectively.
Basic control unit coordinates the concrete technology flow process of distillation condensation energy-saving unit as follows
The 4th pump F4 is transported to raw material in preheater, after preheater preheating, the first pump F1 extracts out and is injected in distiller by the pre-hot sea water in preheater, the part of preheating evaporation of seawater (gasification materiel) is pumped in condenser by the second pump F2, and the 6th pump F6 discharges product from condenser; Band waste heat waste material injects thermal storage device by the 5th pump F5, and the 3rd pump F3 discharges thermal storage device by waste material.The first stop valve V1 plays blocking-up with the effect of the reverse flow of residual heat waste water while closing, when it is connected, keep pipeline unimpeded.The second stop valve V2 plays the effect that blocking-up outside air injects distiller while closing, make distiller inner and outer air pressure consistent when it is opened, and guarantees the smooth injection of distiller or discharges material.The 3rd stop valve V3 plays blocking-up preheating material and from preheater, flows to the effect of distiller while closing.The first liquid level sensor LS1, the first temperature sensor TS1 and the first pressure sensor PS1 are respectively used to detect liquid level, temperature, the pressure in distiller.The second liquid level sensor LS2, the second temperature sensor TS2 are respectively used to detect liquid level, temperature in condenser.The 3rd liquid level sensor LS3, three-temperature sensor TS3 are respectively used to detect liquid level, temperature in preheater.The 4th liquid level sensor LS4, the 4th temperature sensor TS4 are respectively used to detect liquid level, temperature in thermal storage device.
。The first control point CC1, the second control point CC2, the 3rd control point CC3, the 4th control point CC4, the 5th control point CC5, the 6th control point CC6 control respectively the first pump F1, the second pump F2, the 3rd pump F3, the 4th pump F4, the 5th pump F5, the 6th pump F6 startup, rotational speed regulation, the action such as stop, thereby regulate the flow of corresponding conveyance conduit material or gas., the 7th control point CC7, the 8th control point CC8, the 9th control point CC9 control respectively the closure or openness action of the first stop valve V1, the second stop valve V2, the 3rd stop valve V3, thereby allow or stop corresponding pipeline material or gas by this pipeline.The tenth control point CC10, the 11 control point CC11 control respectively heat absorption or the refrigeration work consumption of the first heat pump 5, the second heat pump 6, obtain different duties or operating point.
Heat utilization of the present utility model is very abundant.First, the gas being evaporated in distiller is that the product of separating through raw material has higher temperature, and its heat is siphoned away and be transported to preheater by the second heat pump in condenser, and then passes to raw material.The temperature of the second heat pump heat absorbing end is far smaller than and heats end, and in condenser, the temperature of product is much smaller than the temperature of preheater Raw; Comparatively speaking, if change heat pump into common heat exchange mode, as: plate fin heat-exchanging, the latter cannot make product temperature be less than material temperature.Therefore, the utility model not only absorbs the latent heat of product completely, and the recovery utilization rate of sensible heat is much larger than common heat exchange mode.Secondly, in thermal storage device, waste material has higher temperature, and sensible heat amount is large, needs to reclaim, and its heat is siphoned away and be transported to distiller by the first heat pump, and then passes to raw material.The temperature of the first heat pump heat absorbing end is far smaller than and heats end, and in thermal storage device, the temperature of waste material is much smaller than the temperature of distiller Raw; Comparatively speaking, if change heat pump into common heat exchange mode, the latter cannot make waste material temperature be less than material temperature.Therefore the utility model has fully been used the sensible heat of waste material, and its recovery utilization rate is much larger than common heat exchange mode.In fact, the product that this technique is discharged and the temperature of waste material can be less than the temperature of raw material.In other words, the self-contained sensible heat of raw material is by this technology utilization, thereby reduced widely the needed thermal source of distil process.Therefore, energy-saving effect of the present utility model is very remarkable.
Need supplementary notes, the basic control unit in the utility model is only the most basic control program, for special technique, can increase control point, to adapt to the requirement of different process.
Meanwhile, each step that relates to distillation condensation process Flow of Goods and Materials (comprising boil-off gas) has been arranged basic control point, for regulating material need to carry according to technique in pipeline separately.In addition, the use of the first stop valve V1, the second stop valve V2, the 3rd stop valve V3 is very important.Typical distil process needs distiller to work under different pressures.For example: according to technological requirement, distiller can be at standard atmospheric pressure, lower than atmospheric pressure, higher than atmospheric pressure, under inferior different pressures condition, work, closing of the first stop valve V1, the second stop valve V2, the 3rd stop valve V3 allows the second pump F2 under different rotating speeds, to regulate the pressure in distiller, if lack above-mentioned any valve, may force distiller under relative malleation or condition of negative pressure, produce unnecessary exchange with material or air in preheater and thermal storage device, affect technique and normally carry out.Certainly, in some cases, thermal storage device, preheater, condenser are also pressure vessels, need to configure corresponding stop valve or vavuum pump and regulate the pressure in thermal storage device, preheater, condenser, and the second stop valve V2 also needs to join a vavuum pump and regulates distiller admission pressure.Here, mainly for typical Flow of Goods and Materials, configure the basic control system of this distillation condensation energy-saving technique.The heat absorption of the first heat pump, the second heat pump or process of refrigerastion are strong, nonlinear complex techniques processes of time variation, need to configure control point.
Meanwhile, distiller, condenser, preheater, thermal storage device dispose liquid level and temperature sensor, and these signal feedback are used for controlling liquid level and the temperature of each container to control system.Distiller needs pressure sensor to using to detect the distiller pressure as pressure vessel.In the less demanding situation of flow feedback signal, need not in each material flow pipeline, settle flow sensor, by the anti-flow information of releasing roughly of known speed of the first pump F1, the second pump F2, the 3rd pump F3, the 4th pump F4, the 5th pump F5, the 6th pump F6.If flow control accuracy is had relatively high expectations, configuration flow quantity sensor in corresponding material flow pipeline
Consider the particularity of concrete chemical process, this patent does not provide concrete control algolithm.Yet in conjunction with above-mentioned detecting unit and control assembly, user can be in conjunction with different control algolithms, thereby realize automation, intellectuality, optimization and the modernization of technical process.
Claims (1)
1. the control system of novel distillation condensation energy-saving technique, is characterized in that comprising distillation condensation energy-saving unit and basic control unit;
Distillation condensation energy-saving unit comprises distiller, condenser, preheater, thermal storage device, the first heat pump, the second heat pump; The first gas input of distiller passes through pipeline air-inlet, and on pipeline, is provided with the second stop valve V2, is provided with the 8th control point CC8, and controls the second stop valve V2 by the 8th control point CC8, and then control pipeline air-inlet on the second stop valve V2; The second input of distiller is connected with one end of the first pump F1 by pipeline, and be provided with the 3rd stop valve V3 between the second input and the pipeline of the first pump F1, on the 3rd stop valve V3, be provided with the 9th control point CC9, the other end of the first pump F1 is connected with the first output of preheater, preheating material in output preheater, and on the first pump F1, be provided with the first control point CC1; The 3rd input of distiller is connected with the end that heats of the first heat pump; The first output of distiller is connected with one end of the second pump F2, and second other end of pump F2 and the first input end of condenser are connected; The second output of distiller is connected with one end of the 5th pump F5 by pipeline, on pipeline between the second output and the 5th pump F5, be provided with the first stop valve V1, on the first stop valve V1, be provided with the 7th control point CC7, on the 5th pump F5, be provided with the 5th control point CC5, the 5th other end of pump F5 and the first input end of thermal storage device are connected; On the sidewall of described distiller, be provided with the first pressure sensor PS1, the first liquid level sensor LS1 and the first temperature sensor TS1;
The first output of condenser is external, and the second output is connected with one end of the 6th pump F6 by pipeline, is provided with the 6th control point CC6 on the 6th pump F6, and the 6th control point CC6 controls output of products by controlling the 6th pump F6; The 3rd output is connected with the heat absorbing end of the second heat pump, and the end that heats of the second heat pump is connected with the first input end of preheater, is provided with the 11 control point CC11 on the second heat pump; On the sidewall of described condenser, be provided with the second liquid level sensor LS2 and the second temperature sensor TS2;
The second input of preheater is connected with one end of the 4th pump F4, on the 4th pump F4, be provided with the 4th control point CC4, and control the 4th pump F4 suction raw material by the 4th control point CC4, on the sidewall of described preheater, be provided with the 3rd liquid level sensor LS3 and three-temperature sensor TS3;
The first output of thermal storage device is connected with the heat absorbing end of the first heat pump; the second output is connected with one end of the 3rd pump F3 by pipeline; and on the 3rd pump F3, be provided with the 3rd control point CC3; and by the 3rd control point CC3, control the 3rd pump F3 and get rid of waste material, on the sidewall of described thermal storage device, be provided with the 4th liquid level sensor LS4 and the 4th temperature sensor TS4;
Basic control unit comprises the first pump F1, the second pump F2, the 3rd pump F3, the 4th pump F4, the 5th pump F5, the 6th pump F6, the first stop valve V1, the second stop valve V2, the 3rd stop valve V3, the first liquid level sensor LS1, the second liquid level sensor LS2, the 3rd liquid level sensor LS3, the 4th liquid level sensor LS4, the first temperature sensor TS1, the second temperature sensor TS2, three-temperature sensor TS3, the 4th temperature sensor TS4, the first pressure sensor PS1, the first control point CC1, the second control point CC2, the 3rd control point CC3, the 4th control point CC4, the 5th control point CC5, the 6th control point CC6, the 7th control point CC7, the 8th control point CC8, the 9th control point CC9, the tenth control point CC10, the 11 control point CC11,
The first pump F1 is arranged in the conveyance conduit of preheating material, in the pipeline between preheater the first output and distiller the second input; The second pump F2 is arranged in gasification materiel conveyance conduit, in the pipeline between distiller the first output and condenser first input end; The 3rd pump F3 is arranged in waste material discharge line, in the pipeline being connected with thermal storage device the second output; The 4th pump F4 is arranged in feed line road, in the pipeline being connected with preheater the second input; The 5th pump F5 is arranged in band waste heat waste material conveyance conduit, in the pipeline between distiller the second output and thermal storage device first input end; The 6th pump F6 is arranged in product conveyance conduit, in the pipeline being connected with condenser the second output;
The first stop valve V1 and the same pipeline of the 5th pump F5; Stop valve V2 is arranged in admission line, in the pipeline being connected with distiller first input end; The 3rd stop valve V3 and the same pipeline of the first pump F1; The first liquid level sensor LS1, the first temperature sensor TS1 and the first pressure sensor PS1 are arranged on distiller madial wall; The second liquid level sensor LS2, the second temperature sensor TS2 are arranged on condenser madial wall; The 3rd liquid level sensor LS3, three-temperature sensor TS3 are arranged on preheater madial wall; The 4th liquid level sensor LS4, the 4th temperature sensor TS4 are arranged on thermal storage device madial wall; The first control point CC1, the second control point CC2, the 3rd control point CC3, the 4th control point CC4, the 5th control point CC5, the 6th control point CC6 are connected with the first pump F1, the second pump F2, the 3rd pump F3, the 4th pump F4, the 5th pump F5, the 6th pump F6 respectively, the 7th control point CC7, the 8th control point CC8, the 9th control point CC9 are connected with the first stop valve V1, the second stop valve V2, the 3rd stop valve V3 respectively, and the tenth control point CC10, the 11 control point CC11 are connected with the first heat pump, the second heat pump respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201320443044.2U CN203458826U (en) | 2013-07-24 | 2013-07-24 | Control system of novel energy-saving distillation condensation technology |
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| CN201320443044.2U CN203458826U (en) | 2013-07-24 | 2013-07-24 | Control system of novel energy-saving distillation condensation technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446775A (en) * | 2013-07-24 | 2013-12-18 | 杭州电子科技大学 | Control system of novel distilling and condensation energy-conservation process |
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- 2013-07-24 CN CN201320443044.2U patent/CN203458826U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446775A (en) * | 2013-07-24 | 2013-12-18 | 杭州电子科技大学 | Control system of novel distilling and condensation energy-conservation process |
| CN103446775B (en) * | 2013-07-24 | 2015-08-19 | 杭州电子科技大学 | A kind of control system of novel distillation condensation energy-saving technique |
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