CN203704603U - Mechanical vapor recompression based drying device - Google Patents

Mechanical vapor recompression based drying device Download PDF

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Publication number
CN203704603U
CN203704603U CN201420079121.5U CN201420079121U CN203704603U CN 203704603 U CN203704603 U CN 203704603U CN 201420079121 U CN201420079121 U CN 201420079121U CN 203704603 U CN203704603 U CN 203704603U
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Prior art keywords
heat exchanger
function
mechanical
recompression
unit
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CN201420079121.5U
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Chinese (zh)
Inventor
耿文广
高玲
李选友
马秀力
汪双凤
员冬玲
蔡中盼
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Tianli Energy-Saving Engineering Co Ltdof Shandong Academy Of Sciences
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Tianli Energy-Saving Engineering Co Ltdof Shandong Academy Of Sciences
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Abstract

The utility model discloses a mechanical vapor recompression based drying device. The mechanical vapor recompression based drying device comprises at least one superheated vapor drying unit and a mechanical vapor recompression unit which are combined to form a mechanical vapor recompression based superheated vapor drying unit; a dried tail gas exhaust pipe opening of the superheated vapor drying unit is communicated with a vapor suction inlet of the mechanical vapor recompression unit; a vapor outlet of the mechanical vapor recompression unit is communicated onto a heat exchanger of the superheated vapor drying unit; the heat exchanger is communicated with a reheating device which is communicated with an air distributor; the heat exchanger is corresponding to a circulating fan; an inlet end and an outlet end of the reheating device are provided with temperature measuring devices; an inlet and an outlet of mechanical vapor recompression are provided with temperature and pressure measuring devices; a pipe which enables the vapor outlet of the mechanical vapor recompression unit to be communicated with the heat exchanger of the superheated vapor drying unit is provided with a flow control valve. According to the mechanical vapor recompression based drying device, the waste heat of the superheated vapor dried tail gas can be effectively utilized.

Description

Based on the drying equipment of function of mechanical steam recompression
Technical field
The utility model relates to a kind of drying equipment based on function of mechanical steam recompression.
Background technology
At present, dry power consumption accounts for 12% of industrial production total energy consumption, conventional Hot Air Drying energy consumption is large, drying efficiency is low, therefore the technical specialist in dry field has proposed relative Superheated Steam Drying Technology efficiently with scholar, superheat steam drying good product quality, power consumption are less, efficiency is high, so the drying process based on superheat steam drying and to be equipped in the proportion occupying on dry boundary increasing.Aspect dry UTILIZATION OF VESIDUAL HEAT IN, the tail gas of superheat steam drying is all steam, in existing technique, the normal heat exchanger that adopts carries out waste heat recovery to dried tail gas, in order to heat fresh air, fresh air after heated is in order to the material of preheating high-moisture percentage, and the utilization rate of waste heat of superheat steam drying tail gas is only 40% left and right according to statistics, and even partial material can not directly contact with air, this causes the tail gas of superheat steam drying to be utilized, and causes huge energy waste.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of drying equipment based on function of mechanical steam recompression is provided, utilize this equipment can effectively utilize superheat steam drying using waste heat from tail gas, and utilize sensible heat and the latent heat of tail gas simultaneously, dry overall energy consumption is few, even can realize only inputting a small amount of mechanical energy and can maintaining dry run, and whole drying process does not have dried tail gas discharge, energy-conservation and reduce atmosphere pollution, can realize green drying mechanism.
For achieving the above object, the utility model adopts following technical proposals:
A kind of drying equipment based on function of mechanical steam recompression, comprise at least one Vapojet dryer group and a function of mechanical steam recompression unit, the two is combined to form a Vapojet dryer group based on function of mechanical steam recompression, the dried tail gas exhaust pipe mouth of described Vapojet dryer group is connected with the steam suction inlet of function of mechanical steam recompression unit, the steam outlet of function of mechanical steam recompression unit is communicated to the heat exchanger of Vapojet dryer group, heat exchanger is communicated with reheat machine, reheat machine is connected with ventilation terminal, heat exchanger is also corresponding with circulating fan, arrival end and the port of export of described reheat machine are equipped with temperature measuring equipment, and the porch of function of mechanical steam recompression and exit are equipped with temperature and pressure measurement mechanism, the steam outlet of described function of mechanical steam recompression unit is provided with flow control valve with the pipeline that the heat exchanger of Vapojet dryer group is connected.
Described heat exchanger is gas-to-gas heat exchanger.
Described reheat machine is electric heater or high-temperature steam reheater.
Described Vapojet dryer group is relatively independent three.
The condensation-water drain of described heat exchanger is connected to condensed water receiving system.
The utility model at least comprises 1 superheat steam drying unit and 1 function of mechanical steam recompression (MVR) device.The steam suction inlet of the dried tail gas access function of mechanical steam recompression device of Vapojet dryer end, vapor (steam) temperature after compressor recompression and pressure are all significantly improved and become high temperature and high pressure steam, high-temperature steam is sent into the built-in heat exchanger of Vapojet dryer, high-temperature steam fully becomes condensate water after heat exchange in heat exchanger, drying medium in drying machine is through fully heat temperature raising of heat exchanger quilt, after heating up, drying medium, through reheat machine to be adjusted to dry required normal temperature, then heats material to be dried.After the abundant heat exchange of drying medium and material to be dried absorbs moisture, become saturated vapor, saturated vapor is admitted to steam recompression suction inlet, completes circulation.The emission-free discharge of whole dry run, the moisture removing after dry materials becomes steam, this part steam is sent into heat exchanger after vapour compression machine heats up, fully after heat exchange, become condensed water, the moisture that is material has experienced two links of evaporation-condensation, the latent heat of moisture phase transformation is all recycled utilization, from whole process analysis, the required heat of dry materials is only the temperature rise of moisture from normal temperature to condensed water temperature heat used in material, the conventional drying system of comparing, drying system energy consumption based on MVR is few, 15% left and right that the energy consumption of this drying process only consumes energy for conventional drying technique in theory.
Brief description of the drawings
Fig. 1 is the utility model structural representation;
The wherein 1-material that is dried, 2-the first circulating fan, 3-the first gas-to-gas heat exchanger, 4-the first reheat machine, 5 function of mechanical steam recompression units (MVR), 6-first flow control valve, 7-second adjustable valve, 8-the first circulating fan, 9-the second reheat machine, 10-the second gas-to-gas heat exchanger, 11-the second circulating fan, 12-the 3rd gas-to-gas heat exchanger, 13-the 3rd reheat machine, 14-chain type material conveying mechanism, 15-the 3rd flow control valve, 16-the 4th flow control valve, 17-dried tail gas exhaust pipe mouth, 18-condensed water.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated.
In Fig. 1, it comprises at least one Vapojet dryer group and a function of mechanical steam recompression unit (MVR), and the two is combined to form a Vapojet dryer group based on MVR.In this example, Vapojet dryer divides three sections (or being called three unit), i.e. leading portion I, stage casing II and latter end III.
The dried tail gas exhaust pipe mouth 17 of drying machine latter end III is connected with the steam suction inlet of steam recompression unit 5, after recompression, the temperature and pressure of dried tail gas all significantly promotes, form high-grade hyperthermia and superheating steam, each dry subdivision that this part superheated steam is transported to drying machine (is leading portion I, stage casing II and latter end III) the 3rd gas-to-gas heat exchanger 12, the first gas-to-gas heat exchanger 3 and the second gas-to-gas heat exchanger 10, on conveyance conduit wherein, correspondence is provided with second adjustable valve 7 respectively, the 3rd flow control valve 15, the 4th flow control valve 16 and first flow control valve 6.
The drying medium of Vapojet dryer group is steam, in the end III of drying machine, the leading portion I(that the low-pressure saturated steam that completes dry run is transported to drying machine through pipeline and the first circulating fan 8 be the drying medium of dryer group end by blower fan recycled back to dryer group top), after entering the 3rd gas-to-gas heat exchanger 12, entering the 3rd reheat machine 13, reheat machine can be electric heater or high-temperature steam reheater, obtaining being evenly delivered to wet stock district through ventilation terminal after drying process design temperature is dried dropping into by drying machine dog-house the material 1 that is dried of carrying through chain type material conveying mechanism 14, after the abundant heat release of the 3rd gas-to-gas heat exchanger 12, become the unified recovery of condensed water 18 from the high-temperature steam of vapour compression machine.In the leading portion I of drying unit, superheated steam becomes saturated vapor completing after dry run, this part saturated vapor is transported to the first gas-to-gas heat exchanger 3 of the stage casing II of drying unit again through the first circulating fan 2, carry out abundant heat exchange with the high-temperature steam from function of mechanical steam recompression unit 5, wherein low-pressure saturated steam heats up and becomes superheated steam, after the first reheat machine 4 further regulates temperature, carry out dry materials, after the abundant heat release of the first gas-to-gas heat exchanger 3, become the unified recovery of condensed water 18 from the high-temperature steam of vapour compression machine simultaneously.In the II of the stage casing of drying unit, superheated steam becomes saturated vapor completing after dry run, this part saturated vapor is transported to the second gas-to-gas heat exchanger 10 of the latter end III of next drying unit again through the second circulating fan 11, carry out abundant heat exchange with the high-temperature steam from function of mechanical steam recompression unit 5, wherein low-pressure saturated steam heats up and becomes superheated steam, after further regulating temperature, the second reheat machine 9 carries out dry materials, after the abundant heat release of the second gas-to-gas heat exchanger 10, become the unified recovery of condensed water 18 from the high-temperature steam of function of mechanical steam recompression unit 5 simultaneously.
Such superheat steam drying unit has 1 at least, also can be according to the characteristic of material to be dried, and be divided into multiple drying units and complete dry run.
By reference to the accompanying drawings detailed description of the invention of the present utility model is described although above-mentioned; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendments that creative work can make or distortion still in protection domain of the present utility model.

Claims (5)

1. the drying equipment based on function of mechanical steam recompression, it is characterized in that, comprise at least one Vapojet dryer group and a function of mechanical steam recompression unit, the two is combined to form a Vapojet dryer group based on function of mechanical steam recompression, the dried tail gas exhaust pipe mouth of described Vapojet dryer group is connected with the steam suction inlet of function of mechanical steam recompression unit, the steam outlet of function of mechanical steam recompression unit is communicated to the heat exchanger of Vapojet dryer group, heat exchanger is communicated with reheat machine, reheat machine is connected with ventilation terminal, heat exchanger is also corresponding with circulating fan, arrival end and the port of export of described reheat machine are equipped with temperature measuring equipment, and the porch of function of mechanical steam recompression and exit are equipped with temperature and pressure measurement mechanism, the steam outlet of described function of mechanical steam recompression unit is provided with flow control valve with the pipeline that the heat exchanger of Vapojet dryer group is connected.
2. the drying equipment based on function of mechanical steam recompression as claimed in claim 1, is characterized in that, described heat exchanger is gas-to-gas heat exchanger.
3. the drying equipment based on function of mechanical steam recompression as claimed in claim 1, is characterized in that, described reheat machine is electric heater or high-temperature steam reheater.
4. the drying equipment based on function of mechanical steam recompression as claimed in claim 1, is characterized in that, described Vapojet dryer group is relatively independent three.
5. the drying equipment based on function of mechanical steam recompression as claimed in claim 1, is characterized in that, the condensation-water drain of described heat exchanger is connected to condensed water receiving system.
CN201420079121.5U 2014-02-24 2014-02-24 Mechanical vapor recompression based drying device Active CN203704603U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420079121.5U CN203704603U (en) 2014-02-24 2014-02-24 Mechanical vapor recompression based drying device

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Application Number Priority Date Filing Date Title
CN201420079121.5U CN203704603U (en) 2014-02-24 2014-02-24 Mechanical vapor recompression based drying device

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CN203704603U true CN203704603U (en) 2014-07-09

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106500492A (en) * 2016-11-11 2017-03-15 江苏乐科节能科技股份有限公司 Water circulation type function of mechanical steam recompression MVR drying systems and its method
EP3333524A1 (en) * 2016-12-11 2018-06-13 Stela Laxhuber GmbH Continuous dryer for drying an article using warm air with at least two sections

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106500492A (en) * 2016-11-11 2017-03-15 江苏乐科节能科技股份有限公司 Water circulation type function of mechanical steam recompression MVR drying systems and its method
CN106500492B (en) * 2016-11-11 2022-05-03 江苏乐科节能科技股份有限公司 Water circulation type mechanical vapor recompression MVR drying system and method thereof
EP3333524A1 (en) * 2016-12-11 2018-06-13 Stela Laxhuber GmbH Continuous dryer for drying an article using warm air with at least two sections

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