CN104128012B - A kind of falling film evaporator material distributing system - Google Patents

A kind of falling film evaporator material distributing system Download PDF

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Publication number
CN104128012B
CN104128012B CN201410421536.0A CN201410421536A CN104128012B CN 104128012 B CN104128012 B CN 104128012B CN 201410421536 A CN201410421536 A CN 201410421536A CN 104128012 B CN104128012 B CN 104128012B
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China
Prior art keywords
cloth
heat exchanger
membranous disc
tube
bore
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Expired - Fee Related
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CN201410421536.0A
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Chinese (zh)
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CN104128012A (en
Inventor
周松涛
蔡小洪
曹建松
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NANTONG SAFE MACHINERY EQUIPMENT CO Ltd
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NANTONG SAFE MACHINERY EQUIPMENT CO Ltd
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Publication of CN104128012A publication Critical patent/CN104128012A/en
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  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The present invention relates to a kind of falling film evaporator material distributing system, comprise heat exchanger upper cover, heat exchanger outer wall, meet flitch, cloth film weir, cloth membranous disc and heat exchanger tube; The upper end of described heat exchanger outer wall is provided with heat exchanger upper cover, is provided with several heat exchanger tubes at the inner homogeneous of heat exchanger outer wall; The top of described heat exchanger upper cover is provided with a charging aperture, be connected with in the lower end of charging aperture and meet flitch, cloth film weir is installed in the lower end of meeting flitch, in the upper end of the circumferential surface on cloth film weir, cofferdam, cloth film weir is installed, in the lower end of cloth membranous disc, cloth membranous disc is installed, cloth membranous disc cofferdam is installed in the upper end of the circumferential surface of cloth membranous disc, cloth membranous disc is distributed with overflow pipe, described overflow pipe and heat exchanger tube one_to_one corresponding.The invention has the advantages that: the mode utilizing cloth film weir and cloth membranous disc two sub-distribution, ensure that heat-conducting liquid distributes even, utilize and heat pipe overflow pipe one to one simultaneously, ensure all can be assigned to heat-conducting liquid in each heat pipe.

Description

A kind of falling film evaporator material distributing system
Technical field
The present invention relates to a kind of falling film evaporator, particularly a kind of falling film evaporator material distributing system.
Background technology
Falling film evaporation is added from falling film evaporator heating clamber upper tube box at feed liquid, through liquid distribution and film formation device, be evenly distributed in each heat exchanger tube, under gravity and vacuum induced and airflow function, uniformly membranaceously to flow from top to bottom, in flow process, heat vaporized by shell side heat medium, the steam produced and liquid phase enter the separation chamber of evaporimeter jointly, vapour-liquid is through being fully separated, steam enters condenser condenses (single-action operation) or enters lower 1st effective evaporator as heat medium, thus realize multiple-effect operation, liquid phase is then discharged by separation chamber, equipment body is by I, II, III effect heater, separator, thermocompressor, condenser, sterilizer, insulating tube, material pump, water pump and instrument cabinet composition.The evaporation and concentration being widely used in the water of the industries such as medicine, food, chemical industry, light industry or organic solvent solution is dense, and the liquid waste processing of above industry can be widely used in, especially heat sensitive material is applicable to, this equipment carries out continued operation under vacuum and low temperature condition, has that evaporability is high, energy-saving and cost-reducing, operating cost is low and can ensure material consistency in evaporation process.
At present; in the processes such as stearic acid distillation and fatty acid distillation; for the reboiler of destilling tower; often falling film evaporator can be used; and be a kind of downward film evaporator mentioned in CN103153419A in the patent No.; it comprises two or more tube banks; they are configured with self tube sheet separately; the VERTICAL TUBE of each tube bank is connected with the tube sheet of corresponding tube bank in lower end and is connected with the collection manifold of corresponding tube bank in upper end thus; on tube bank; arrange liquid dispensing apparatus, liquid to be evaporated is fed in described tube bank.Carry out in the process of distilling at said structure, when utilizing liquid dispensing apparatus to be dispensed in tube bank by heat-conducting liquid, cannot ensure that heat-conducting liquid uniform distribution is in each tube bank, namely may there will be in the tube bank had and there is no heat-conducting liquid or the few situation of the conductive fluid scale of construction, affect heat-conducting effect, be unfavorable for the normal operation of evaporimeter.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of falling film evaporator material distributing system that can be good at being evenly distributed to by material in each heat exchanger tube.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of falling film evaporator material distributing system, and its innovative point is: comprise heat exchanger upper cover, heat exchanger outer wall, meet flitch, cloth film weir, cloth membranous disc and heat exchanger tube;
The upper end of described heat exchanger outer wall is provided with heat exchanger upper cover, is provided with several heat exchanger tubes at the inner homogeneous of heat exchanger outer wall;
The top of described heat exchanger upper cover is provided with the charging aperture that extends to cover cavity on heat exchanger, be connected with in the lower end of charging aperture and meet flitch, cloth film weir is installed in the lower end of meeting flitch, in the upper end of the circumferential surface on cloth film weir, cofferdam, cloth film weir is installed, in the lower end on cloth film weir, cloth membranous disc is installed, cloth membranous disc cofferdam is installed in the upper end of the circumferential surface of cloth membranous disc, cloth membranous disc is distributed with several overflow pipe running through cloth membranous disc, described overflow pipe is positioned at directly over heat exchanger tube, and with heat exchanger tube one_to_one corresponding;
The lower end of described cloth membranous disc is provided with a tube sheet, and described tube sheet laterally runs through heat exchanger outer wall, and is connected with the flange being arranged on heat exchanger outer wall, tube sheet has the through hole that some appearance heat exchanger tubes pass, and is welded and fixed between tube sheet and heat exchanger tube;
Described cloth film weir is connected by upper stay pipe with between cloth membranous disc, and cloth membranous disc is connected by lower support pipe with between tube sheet.
Further, the top in cofferdam, described cloth film weir is higher than the top of meeting flitch, and the top in cloth membranous disc cofferdam is lower than the bottom on cloth film weir.
Further, described upper stay pipe comprises pipe and upper support outer tube in support, and Guan Youyi root in upper support, is fixed on the bottom on cloth film weir, and upper support outer tube has three, is evenly fixed on the circumferential edges of cloth membranous disc.
Further, in described upper support, the bore of pipe is 20mm, and height is 115mm, and the bore of upper support outer tube is 32mm, and height is 115mm.
Further, described lower support pipe comprises pipe and lower support outer tube in lower support, and Guan Youyi root in lower support, is fixed on the bottom of cloth membranous disc, and lower support outer tube has three, is evenly fixed on the circumferential edges of tube sheet.
Further, in described lower support, the bore of pipe is 20mm, and height is 70mm, and the bore of lower support outer tube is 32mm, and height is 70mm.
Further, the top of the inwall of described heat exchanger tube is provided with a distributor, and distributor comprises upper end canned paragraph and lower end distribution section, and canned paragraph is fixed on the inwall of heat exchanger tube, and the bore of distribution section increases from top to bottom gradually.
Further, the bore of the outer wall of described heat exchanger tube is 38mm, and the bore of inwall is 32mm, and the bore of the canned paragraph of distributor is 32mm, and the bore on the top of the distribution section of distributor is 14mm, and the bore of bottom is 29mm.
Further, the diameter on described cloth film weir is 980mm, and thickness is 12mm, the thickness in cofferdam, cloth film weir is 8mm, be highly 220mm, the diameter of cloth membranous disc is 995mm, and thickness is 50mm, the thickness in cloth membranous disc cofferdam is 8mm, be highly 100mm, the distance of top to the charging aperture bottom of heat exchanger upper cover is 200mm, and the bottom of charging aperture is 150mm with the distance on the top of meeting flitch, the thickness of meeting flitch is 16mm, and diameter is 150mm.
The invention has the advantages that: the mode utilizing cloth film weir and cloth membranous disc two sub-distribution, ensure that heat-conducting liquid distributes even, utilize and heat pipe overflow pipe one to one simultaneously, ensure all can be assigned to heat-conducting liquid in each heat pipe; Utilize inside and outside two kinds of stay pipes, cloth film weir and cloth membranous disc well can not only be supported on tube sheet, also facilitate simultaneously and cloth film weir and cloth membranous disc are dismantled; Distributor is set in heat exchanger tube, utilizes distributor to can be good at the inwall of heat-conducting liquid from heat exchanger tube to flow, ensure heat transfer effect.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of falling film evaporator material distributing system of the present invention.
Fig. 2 is the schematic diagram of the distributor of falling film evaporator material distributing system of the present invention.
Detailed description of the invention
Schematic diagram is as shown in Figure 1 known, falling film evaporator material distributing system of the present invention comprises heat exchanger upper cover 2, heat exchanger outer wall 16, meets flitch 3, cloth film weir 4, cloth membranous disc 8 and heat exchanger tube 15.
In the upper end of heat exchanger outer wall 16, heat exchanger upper cover 2 is installed, at the inner homogeneous of heat exchanger outer wall 16, several heat exchanger tubes 15 is installed.
The top covering 2 is on heat exchangers provided with the charging aperture 1 that extends to the inner chamber of heat exchanger upper cover 2, be connected with in the lower end of charging aperture 1 and meet flitch 3, cloth film weir 4 is installed in the lower end of meeting flitch 3, in the upper end of the circumferential surface on cloth film weir 4, cofferdam, cloth film weir 5 is installed, the top in cofferdam, cloth film weir 5 is higher than the top of meeting flitch 3, in the lower end on cloth film weir 4, cloth membranous disc 8 is installed, cloth membranous disc cofferdam 11 is installed in the upper end of the circumferential surface of cloth membranous disc 8, the top in cloth membranous disc cofferdam 11 is lower than the bottom on cloth film weir 4, cloth membranous disc 8 is distributed with several overflow pipe 10 running through cloth membranous disc 8, overflow pipe 10 is positioned at directly over heat exchanger tube 15, and overflow pipe 10 and heat exchanger tube 15 one_to_one corresponding.
A tube sheet 14 is provided with in the lower end of cloth membranous disc 8, tube sheet 14 laterally runs through heat exchanger outer wall 16, and tube sheet 14 is fixedly connected with the flange 13 being arranged on heat exchanger outer wall 16, tube sheet 14 has the through hole that some appearance heat exchanger tubes 15 pass, and is welded and fixed between tube sheet 14 and heat exchanger tube 15.
Cloth film weir 4 is connected by upper stay pipe with between cloth membranous disc 8, upper stay pipe comprises pipe 9 and upper support outer tube 6 in support, in upper support, pipe 9 has one, be fixed on the bottom on cloth film weir 4, upper support outer tube 6 has three, is evenly fixed on the circumferential edges of cloth membranous disc 8, in upper support, the bore of pipe 9 is 20mm, in supporting, the height of pipe 9 is 115mm, and the bore of upper support outer tube 6 is 32mm, and the height of upper support outer tube 6 is 115mm.
Be connected by lower support pipe between cloth membranous disc 8 with tube sheet 14, lower support pipe comprises pipe 12 and lower support outer tube 7 in lower support, and in lower support, pipe 12 has one, is fixed on the bottom of cloth membranous disc 8, lower support outer tube 7 has three, is evenly fixed on the circumferential edges of tube sheet 14.In lower support, the bore of pipe 12 is 20mm, and in lower support, the height of pipe 12 is 70mm, and the bore of lower support outer tube 7 is 32mm, and the height of lower support outer tube 7 is 70mm.
Schematic diagram is as shown in Figure 2 known, on the top of the inwall of heat exchanger tube 15, a distributor is installed, distributor comprises upper end canned paragraph 18 and lower end distribution section 17, canned paragraph 18 is fixed on the inwall of heat exchanger tube 15, the bore of distribution section 17 increases from top to bottom gradually, the bore of the outer wall of heat exchanger tube 15 is 38mm, the bore of the inwall of heat exchanger tube 15 is 32mm, the bore of the canned paragraph 18 of distributor is 32mm, the bore on the top of the distribution section 17 of distributor is 14mm, and the bore of the bottom of the distribution section 17 of distributor is 29mm.
The diameter on cloth film weir 4 is 980mm, the thickness on cloth film weir 4 is 12mm, the thickness in cofferdam, cloth film weir 5 is 8mm, the height in cofferdam, cloth film weir 5 is 220mm, the diameter of cloth membranous disc 8 is 995mm, the thickness of cloth membranous disc 8 is 50mm, the thickness in cloth membranous disc cofferdam 11 is 8mm, the height in cloth membranous disc cofferdam 11 is 100mm, the distance of top to the bottom of charging aperture 1 of heat exchanger upper cover 2 is 200mm, the bottom of charging aperture 1 is 150mm with the distance on the top of meeting flitch 3, and the thickness of meeting flitch 3 is 16mm, and the diameter of meeting flitch 3 is 150mm.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (5)

1. a falling film evaporator material distributing system, it is characterized in that: comprise heat exchanger upper cover, heat exchanger outer wall, meet flitch, cloth film weir, cloth membranous disc and heat exchanger tube, the upper end of described heat exchanger outer wall is provided with heat exchanger upper cover, is provided with several heat exchanger tubes at the inner homogeneous of heat exchanger outer wall;
The top of described heat exchanger upper cover is provided with the charging aperture that extends to cover cavity on heat exchanger, be connected with in the lower end of charging aperture and meet flitch, cloth film weir is installed in the lower end of meeting flitch, in the upper end of the circumferential surface on cloth film weir, cofferdam, cloth film weir is installed, the top in cofferdam, cloth film weir is higher than the top of meeting flitch, in the lower end on cloth film weir, cloth membranous disc is installed, cloth membranous disc cofferdam is installed in the upper end of the circumferential surface of cloth membranous disc, the top in cloth membranous disc cofferdam is lower than the bottom on cloth film weir, cloth membranous disc is distributed with several overflow pipe running through cloth membranous disc, described overflow pipe is positioned at directly over heat exchanger tube, and with heat exchanger tube one_to_one corresponding,
The lower end of described cloth membranous disc is provided with a tube sheet, described tube sheet laterally runs through heat exchanger outer wall, and be connected with the flange being arranged on heat exchanger outer wall, tube sheet has the through hole that some appearance heat exchanger tubes pass, and be welded and fixed between tube sheet and heat exchanger tube, the top of the inwall of heat exchanger tube is provided with a distributor, distributor comprises upper end canned paragraph and lower end distribution section, canned paragraph is fixed on the inwall of heat exchanger tube, and the bore of distribution section increases from top to bottom gradually;
Described cloth film weir is connected by upper stay pipe with between cloth membranous disc, and cloth membranous disc is connected by lower support pipe with between tube sheet; Upper stay pipe comprises pipe and upper support outer tube in support, and Guan Youyi root in upper support, is fixed on the bottom on cloth film weir, and upper support outer tube has three, is evenly fixed on the circumferential edges of cloth membranous disc; Lower support pipe comprises pipe and lower support outer tube in lower support, and Guan Youyi root in lower support, is fixed on the bottom of cloth membranous disc, and lower support outer tube has three, is evenly fixed on the circumferential edges of tube sheet.
2. falling film evaporator material distributing system according to claim 1, is characterized in that: in described upper support, the bore of pipe is 20mm, and height is 115mm, and the bore of upper support outer tube is 32mm, and height is 115mm.
3. falling film evaporator material distributing system according to claim 2, is characterized in that: in described lower support, the bore of pipe is 20mm, and height is 70mm, and the bore of lower support outer tube is 32mm, and height is 70mm.
4. the falling film evaporator material distributing system according to any one in claim 1-3, it is characterized in that: the bore of the outer wall of described heat exchanger tube is 38mm, the bore of inwall is 32mm, the bore of the canned paragraph of distributor is 32mm, the bore on the top of the distribution section of distributor is 14mm, and the bore of bottom is 29mm.
5. falling film evaporator material distributing system according to claim 4, it is characterized in that: the diameter on described cloth film weir is 980mm, thickness is 12mm, the thickness in cofferdam, cloth film weir is 8mm, be highly 220mm, the diameter of cloth membranous disc is 995mm, thickness is 50mm, the thickness in cloth membranous disc cofferdam is 8mm, be highly 100mm, the distance of top to the charging aperture bottom of heat exchanger upper cover is 200mm, and the bottom of charging aperture is 150mm with the distance on the top of meeting flitch, the thickness of meeting flitch is 16mm, and diameter is 150mm.
CN201410421536.0A 2014-08-26 2014-08-26 A kind of falling film evaporator material distributing system Expired - Fee Related CN104128012B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104677476A (en) * 2015-02-09 2015-06-03 常熟市中联光电新材料有限责任公司 Automatic plasticizer weighing and batching device for PVC cable material production
CN108654126A (en) * 2018-06-26 2018-10-16 北京广厦环能科技股份有限公司 A kind of material distributor and falling film evaporator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810327A (en) * 1984-04-24 1989-03-07 Ahlstromforetagen Svenska Ab Falling film evaporator of the vertical-tube type
CN201291073Y (en) * 2008-09-03 2009-08-19 苏州市中衡压力容器制造有限公司 Filming device for tubular evaporator
CN203525344U (en) * 2013-05-18 2014-04-09 苏州市中衡压力容器制造有限公司 Tubular falling-film evaporator
CN204159054U (en) * 2014-08-26 2015-02-18 南通赛孚机械设备有限公司 A kind of falling film evaporator material distributing system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810327A (en) * 1984-04-24 1989-03-07 Ahlstromforetagen Svenska Ab Falling film evaporator of the vertical-tube type
CN201291073Y (en) * 2008-09-03 2009-08-19 苏州市中衡压力容器制造有限公司 Filming device for tubular evaporator
CN203525344U (en) * 2013-05-18 2014-04-09 苏州市中衡压力容器制造有限公司 Tubular falling-film evaporator
CN204159054U (en) * 2014-08-26 2015-02-18 南通赛孚机械设备有限公司 A kind of falling film evaporator material distributing system

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