CN104128012A - Material distribution system of falling-film evaporator - Google Patents

Material distribution system of falling-film evaporator Download PDF

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Publication number
CN104128012A
CN104128012A CN201410421536.0A CN201410421536A CN104128012A CN 104128012 A CN104128012 A CN 104128012A CN 201410421536 A CN201410421536 A CN 201410421536A CN 104128012 A CN104128012 A CN 104128012A
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China
Prior art keywords
heat exchanger
cloth
tube
membranous disc
bore
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410421536.0A
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Chinese (zh)
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CN104128012B (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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Priority to CN201410421536.0A priority Critical patent/CN104128012B/en
Publication of CN104128012A publication Critical patent/CN104128012A/en
Application granted granted Critical
Publication of CN104128012B publication Critical patent/CN104128012B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention relates to a material distribution system of a falling-film evaporator. The material distribution system comprises a heat exchanger upper cover, a heat exchanger outer wall, a material receiving plate, a membrane distribution weir, a membrane distribution tray and heat exchange tubes, wherein the heat exchanger upper cover is mounted at the upper end of the heat exchanger outer wall; a plurality of heat exchange tubes are uniformly mounted inside the heat exchanger outer wall; a feeding hole is formed in the top end of the heat exchanger upper cover; the lower end of the feeding hole is connected with the material receiving plate; the membrane distribution weir is mounted at the lower end of the material receiving plate; a membrane distribution weir cofferdam is mounted at the upper end of the circumferential surface of the membrane distribution weir; a tube plate is mounted at the lower end of the membrane distribution tray; a membrane distribution tray cofferdam is mounted at the upper end of the circumferential surface of the membrane distribution tray; overflowing pipes are distributed on the membrane distribution tray and correspond to the heat exchange tubes one by one. The material distribution system disclosed by the invention has the advantages that heat conducting liquid is uniformly distributed as being filtered twice by the membrane distribution weir and the membrane distribution tray, and simultaneously, the heat conducting liquid is distributed in each heat conducting tube by virtue of the overflowing pipes corresponding to the heat conducting tubes one by one.

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 that feed liquid is added from falling film evaporator heating clamber upper tube box, through liquid distribution and film formation device, be evenly distributed in each heat exchanger tube, under gravity and vacuum induced and airflow function, becoming evenly membranaceous flows from top to bottom, in flow process, by shell side heat medium heating vaporization, the steam producing and liquid phase enter the separation chamber of evaporimeter jointly, vapour-liquid is through fully separating, steam enters condenser condenses (single-action operation) or enters lower 1st effective evaporator as heat medium, thereby realize multiple-effect operation, liquid phase is 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.Be widely used in the water of industry such as medicine, food, chemical industry, light industry or the evaporation and concentration of organic solvent solution dense, and can be widely used in the liquid waste processing of above industry, especially be applicable to heat sensitive material, 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 can use falling film evaporator; and be a kind of downward film evaporator of mentioning in CN103153419 A in the patent No.; it comprises two or more tube banks; they dispose the tube sheet of self 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.In the process of distilling at said structure, in the time utilizing liquid dispensing apparatus heat-conducting liquid to be dispensed in tube bank, cannot ensure that heat-conducting liquid uniform distribution is to each tube bank, may there will be and in the tube bank having, 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 can be good at material is evenly distributed to the falling film evaporator material distributing system 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, in the inside of heat exchanger outer wall, several heat exchanger tubes is evenly installed;
The top of described heat exchanger upper cover is provided with a charging aperture that extends to cover cavity on heat exchanger, be connected with and meet flitch in the lower end of charging aperture, cloth film weir is installed in the lower end of meeting flitch, upper end at the circumferential surface on cloth film weir is provided with cofferdam, cloth film weir, lower end on cloth film weir is provided with cloth membranous disc, cloth membranous disc cofferdam is installed in the upper end of the circumferential surface of cloth membranous disc, on cloth membranous disc, be distributed with several overflow pipes that run through cloth membranous disc, described overflow pipe be positioned at heat exchanger tube directly over, and corresponding one by one with heat exchanger tube;
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 that is arranged on heat exchanger outer wall, has the through hole that some appearance heat exchanger tubes pass on tube sheet, and is welded and fixed between tube sheet and heat exchanger tube;
Between described cloth film weir and cloth membranous disc, be connected by upper stay pipe, between cloth membranous disc and tube sheet, be connected by lower support pipe.
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 support inner tube and upper support outer tube, and upper support inner tube has one, 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, the bore of described upper support inner tube 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 lower support inner tube and lower support outer tube, and lower support inner tube has one, 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, the bore of described lower support inner tube 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 the section that distributes 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 the top of heat exchanger upper cover to charging aperture bottom 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: utilize the mode of cloth film weir and two sub-distribution of cloth membranous disc, ensure that heat-conducting liquid distributes evenly, utilize and heat pipe overflow pipe one to one simultaneously, ensure all can be assigned in each heat pipe heat-conducting liquid; 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 cloth film weir and cloth membranous disc are dismantled simultaneously; Distributor is set in heat exchanger tube, utilizes distributor to can be good at heat-conducting liquid to flow from the inwall of heat exchanger tube, ensure heat transfer effect.
Brief description of the drawings
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, and 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, in the inside of heat exchanger outer wall 16, several heat exchanger tubes 15 is evenly installed.
Be provided with a charging aperture 1 that extends to the inner chamber of heat exchanger upper cover 2 on the top of heat exchanger upper cover 2, be connected with and meet flitch 3 in the lower end of charging aperture 1, cloth film weir 4 is installed in the lower end of meeting flitch 3, upper end at the circumferential surface on cloth film weir 4 is provided with cofferdam, cloth film weir 5, the top in cofferdam, cloth film weir 5 is higher than the top of meeting flitch 3, lower end on cloth film weir 4 is provided with cloth membranous disc 8, 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, on cloth membranous disc 8, be distributed with several overflow pipes 10 that run through cloth membranous disc 8, overflow pipe 10 be positioned at heat exchanger tube 15 directly over, and overflow pipe 10 is corresponding one by one with heat exchanger tube 15.
Be provided with a tube sheet 14 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 that is arranged on heat exchanger outer wall 16, has the through hole that some appearance heat exchanger tubes 15 pass, and be welded and fixed between tube sheet 14 and heat exchanger tube 15 on tube sheet 14.
Between cloth film weir 4 and cloth membranous disc 8, be connected by upper stay pipe, upper stay pipe comprises support inner tube 9 and upper support outer tube 6, upper support inner tube 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, the bore of upper support inner tube 9 is 20mm, the height that supports inner tube 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.
Between cloth membranous disc 8 and tube sheet 14, be connected by lower support pipe, lower support pipe comprises lower support inner tube 12 and lower support outer tube 7, and lower support inner tube 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.The bore of lower support inner tube 12 is 20mm, and the height of lower support inner tube 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 the section 17 that distributes 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 the top of heat exchanger upper cover 2 to the bottom of charging aperture 1 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 described 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; that in above-described embodiment and description, describes 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.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (9)

1. a falling film evaporator material distributing system, 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, in the inside of heat exchanger outer wall, several heat exchanger tubes is evenly installed;
The top of described heat exchanger upper cover is provided with a charging aperture that extends to cover cavity on heat exchanger, be connected with and meet flitch in the lower end of charging aperture, cloth film weir is installed in the lower end of meeting flitch, upper end at the circumferential surface on cloth film weir is provided with cofferdam, cloth film weir, lower end on cloth film weir is provided with cloth membranous disc, cloth membranous disc cofferdam is installed in the upper end of the circumferential surface of cloth membranous disc, on cloth membranous disc, be distributed with several overflow pipes that run through cloth membranous disc, described overflow pipe be positioned at heat exchanger tube directly over, and corresponding one by one with heat exchanger tube;
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 that is arranged on heat exchanger outer wall, has the through hole that some appearance heat exchanger tubes pass on tube sheet, and is welded and fixed between tube sheet and heat exchanger tube;
Between described cloth film weir and cloth membranous disc, be connected by upper stay pipe, between cloth membranous disc and tube sheet, be connected by lower support pipe.
2. falling film evaporator material distributing system according to claim 1, is characterized in that: 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.
3. falling film evaporator material distributing system according to claim 1, it is characterized in that: described upper stay pipe comprises support inner tube and upper support outer tube, and upper support inner tube has one, is fixed on the bottom on cloth film weir, upper support outer tube has three, is evenly fixed on the circumferential edges of cloth membranous disc.
4. falling film evaporator material distributing system according to claim 3, is characterized in that: the bore of described upper support inner tube is 20mm, and height is 115mm, and the bore of upper support outer tube is 32mm, and height is 115mm.
5. falling film evaporator material distributing system according to claim 1, it is characterized in that: described lower support pipe comprises lower support inner tube and lower support outer tube, and lower support inner tube has one, is fixed on the bottom of cloth membranous disc, lower support outer tube has three, is evenly fixed on the circumferential edges of tube sheet.
6. falling film evaporator material distributing system according to claim 5, is characterized in that: the bore of described lower support inner tube is 20mm, and height is 70mm, and the bore of lower support outer tube is 32mm, and height is 70mm.
7. falling film evaporator material distributing system according to claim 1, it is characterized in that: the top of the inwall of described 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 the section that distributes increases from top to bottom gradually.
8. falling film evaporator material distributing system according to claim 7, 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.
9. falling film evaporator material distributing system according to claim 1, 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 the top of heat exchanger upper cover to charging aperture bottom 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 (1)

* 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

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

Cited By (1)

* 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

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