CN105674761A - Mixing condenser - Google Patents
Mixing condenser Download PDFInfo
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- CN105674761A CN105674761A CN201610234963.7A CN201610234963A CN105674761A CN 105674761 A CN105674761 A CN 105674761A CN 201610234963 A CN201610234963 A CN 201610234963A CN 105674761 A CN105674761 A CN 105674761A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B3/00—Condensers in which the steam or vapour comes into direct contact with the cooling medium
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Abstract
The invention provides a mixing condenser which comprises a mixing condenser body.A noncondensable gas pipe is arranged on the top of the mixing condenser body, a cooling water return pipe is arranged at the bottom of the mixing condenser body, and a secondary steam pipe is communicated with the lower portion of one side of the mixing condenser body; a primary cooling device is arranged on the upper portion of the secondary steam pipe; the primary cooling device comprises a primary cooling water supply pipe, a primary cooling water chamber and primary downstream injection spray nozzles.According to the mixing condenser, a loss of temperature ranging from 3 DEG C to 7 DEG C in an existing counter flow type condenser is converted into an effective temperature difference of a multiple-effect vaporization system, the heat utilization efficiency is improved, and yield increasing and energy saving are achieved.Compared with the traditional counter flow condenser, the improved mixed-flow condenser inlet and outlet can achieve zero flow resistance, the internal structure is simple, blocking is not prone to occur, and maintenance is easy.
Description
Technical field
Patent of the present invention relates to the technical reformation method of the industry multi-effect evaporation system mixing condensers such as Natrii Sulfas, Caustic soda, vacuum salt production.
Background technology
Evaporation and concentration is a kind of technique conventional in Production in Chemical Plant. In evaporating concentration process, vacuum is the motive force of heat transfer. Under the promotion of end effect vacuum pressure, feed liquid is through repeatedly evaporating, and the latent heat of vaporization of water vapour is reused. The height of end effect vacuum and relative production intensity substantial connection, along with the raising of end effect vacuum, produce intensity and increase rapidly. Therefore, maintain higher end effect vacuum and be always up the key point that multi-effect evaporation system is energy-conservation.
Existing vacuum system mostly joins multistage steam ejector by mixing condenser and water stream injection pump (or water-ring vacuum pump) ensures vacuum. Wherein, steam condensation is produced vacuum by direct heat transfer mass transfer between soda pop by mixing condenser, is the nucleus equipment forming vacuum; Steam jet ejector and water stream injection pump are mainly used in the fixed gas extracting in system. The operational effect of mixing condenser is to affect the key equipment of multi-effect evaporation system end effect vacuum.
At present condenser mostly be reverse-flow mixing condenser, its internal structure has board-like, tubular type, injecting type and parallel type. In countercurrent condenser, indirect steam or fixed gas enter bottom condenser, carry out counter current contacting with top-down cooling water, and fixed gas is extracted from top by vacuum equipment. Indirect steam or fixed gas not only to overcome the resistance of pipeline and equipment in flow process, also to overcome the resistance of cooling water, and therefore this countercurrent condenser ubiquity in practical engineering application easily blocks, the shortcomings such as flow resistance is big. Generally, the flow resistance of countercurrent condenser is 2000-4000Pa, and corresponding temperature difference loss is about 3-7 DEG C, accounts for the 10-20% of effective temperature difference, greatly reduces the thermal efficiency, result in the decline producing intensity. The effective temperature difference of system can be improved 3-7 DEG C by the resistance therefore reducing mixing condenser, and the same period, production capacity improved 10-20%.
Summary of the invention
It is an object of the invention to solve the defect that above-mentioned prior art exists, there is provided a kind of under the premise ensureing indirect steam total condensation, internal structure to existing countercurrent condenser, distribution and the shower nozzle layout pattern of cooling water have been transformed, a kind of collection is provided to bleed and condense, the mixing condenser of zero flow resistance.
A kind of mixing condenser, including: mixing condenser body, the top of mixing condenser body is provided with fixed gas pipe, and bottom is provided with CWR, is communicated with secondary steam pipe in the lower section of mixing condenser body side;
It is provided above one-level chiller at described secondary steam pipe;
Described one-level chiller includes: one-level cooling water supply pipe, one-level cooling water chamber, one-level following current injection shower nozzle; Described one-level cooling water chamber is fixed on the outer of secondary steam pipe and places, and described one-level cooling water supply pipe is arranged on the outer wall of one-level cooling water chamber for providing water source for it; Described one-level following current injection shower nozzle is arranged in secondary steam pipe, and this one-level following current injection shower nozzle connects with described one-level cooling water chamber.
Further, mixing condenser as above, it is arranged below two grades of chillers at mixing condenser body;
Described two grades of chillers include: two grades of injection shower nozzles, two grades of cooling water chambers, two grades of cooling water supply pipes; Described two grades of cooling water chambers are arranged on the inside of mixing condenser body, and one end of described two grades of cooling water supply pipes is fixing with the top of described two grades of cooling water chambers to be connected, and the other end stretches out outside the sidewall of mixing condenser body; Described two grades of injection shower nozzle distributing installations are on the surrounding sidewall of two grades of cooling water chambers.
Further, mixing condenser as above, three grades of chillers it are provided with at the middle part of mixing condenser body;
Described three grades of chillers include: three grades of cooling water chambers, three grades of cooling water supply pipes, three swirler atomizers; Described three grades of cooling water chambers are fixed on the outer of mixing condenser body and place, and described three grades of cooling water supply pipes are arranged on the outer wall of three grades of cooling water chambers for providing water source for it; Described three swirler atomizer is arranged on mixing condenser, and this is internal, and this three swirler atomizer connects with described three grades of cooling water chambers.
Further, mixing condenser as above, mixing condenser this is internal, three grades of chillers be arranged below the first splash board.
Further, mixing condenser as above, the top of mixing condenser body is provided with level Four chiller;
Described level Four chiller includes: level Four cooling water chamber, level Four cooling water supply pipe, level Four rotational flow atomized spray injector; Described level Four cooling water chamber is fixed on the outer of mixing condenser body and places, and described level Four cooling water supply pipe is arranged on the outer wall of level Four cooling water chamber for providing water source for it; Described level Four rotational flow atomized spray injector is arranged on mixing condenser, and this is internal, and this level Four rotational flow atomized spray injector connects with described level Four cooling water chamber.
Further, mixing condenser as above, mixing condenser this is internal, level Four chiller be arranged below the second splash board.
Further, mixing condenser as above, it is arranged below trickle ring at the second splash board.
Further, mixing condenser as above, described three swirler atomizer, level Four rotational flow atomized spray injector flow all in the scope of 4-50t/h, work water pressure is 6-12mH2O, nozzle diameter is 12-50mm, and Average droplet diameter is respectively less than 2mm.
Further, mixing condenser as above, from the first splash board to the spray density of level Four rotational flow atomized spray injector be 100-180t/m2·h。
The invention has the beneficial effects as follows, the 3-7 DEG C of temperature loss being lost in former countercurrent condenser is changed into the effective temperature difference of multi-effect evaporation system, improve heat utilization efficiency, it is achieved Increasing Production and Energy Saving. Relative to traditional contraflow condenser, the mixed-flow condenser of present invention transformation is imported and exported and can be realized zero flow resistance, and internal structure is simple, is not easily blocked, and safeguards simple.
Accompanying drawing explanation
Fig. 1 is mixing condenser body construction schematic diagram of the present invention;
Fig. 2 is one-level following current injection shower nozzle layout type structural representation of the present invention;
Fig. 3 is two grades of injection shower nozzle layout type structural representations of the present invention;
Fig. 4 is the present invention three, level Four shower nozzle layout type structural representation.
1-secondary steam pipe; 2-one-level cooling water supply pipe; 3-one-level cooling water chamber; 4-one-level following current injection shower nozzle; 5-level Four cooling water chamber; 6-mixing condenser body; Tri-grades of cooling water chambers of 7-; 8-CWR; Bis-grades of injection shower nozzles of 9-; Bis-grades of cooling water chambers of 10-; Bis-grades of cooling water supply pipes of 11-; 12-the first splash board; Tri-grades of cooling water supply pipes of 13-; 14-three swirler atomizer; 15-trickle ring; 16-the second splash board; 17-level Four cooling water supply pipe; 18-level Four rotational flow atomized spray injector; 19-fixed gas pipe.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below technical scheme in the present invention be clearly and completely described, it is clear that described embodiment is a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
As shown in Figure 1 and Figure 2, mixing condenser provided by the invention, including: mixing condenser body 6, the top of mixing condenser body 6 is provided with fixed gas pipe 19, bottom is provided with CWR 8, is communicated with secondary steam pipe 1 in the lower section of mixing condenser body 6 side;
It is provided above one-level chiller at described secondary steam pipe 1;
Described one-level chiller includes: one-level cooling water supply pipe 2, one-level cooling water chamber 3, one-level following current injection shower nozzle 4; Described one-level cooling water chamber 3 is fixed on the outer of secondary steam pipe 1 and places, and described one-level cooling water supply pipe 2 is arranged on the outer wall of one-level cooling water chamber 3 for providing water source for it; Described one-level following current injection shower nozzle 4 is arranged in secondary steam pipe 1, and this one-level following current injection shower nozzle 4 connects with described one-level cooling water chamber 3.
Preferably, mixing condenser as above, mixing condenser body 6 be arranged below two grades of chillers, middle part is provided with three grades of chillers, top is provided with level Four chiller;
Described two grades of chillers include: two grades of injection shower nozzles, 10, two grades of cooling water supply pipes 11 of 9, two grades of cooling water chambers; Described two grades of cooling water chambers 10 are arranged on the inside of mixing condenser body 6, and one end of described two grades of cooling water supply pipes 11 is fixing with the top of described two grades of cooling water chambers 10 to be connected, and the other end stretches out outside the sidewall of mixing condenser body 6; Described two grades of injection shower nozzle 9 distributing installations are on the surrounding sidewall of two grades of cooling water chambers 10.
Described three grades of chillers include: three grades of cooling water chambers 7, three grades of cooling water supply pipes 13, three swirler atomizers 14; Described three grades of cooling water chambers 7 are fixed on the outer of mixing condenser body 6 and place, and described three grades of cooling water supply pipes 13 are arranged on the outer wall of three grades of cooling water chambers 7 for providing water source for it; Described three swirler atomizer 14 is arranged in mixing condenser body 6, and this three swirler atomizer 14 connects with described three grades of cooling water chambers 7.
Described level Four chiller includes: level Four cooling water chamber 5, level Four cooling water supply pipe 17, level Four rotational flow atomized spray injector 18; Described level Four cooling water chamber 5 is fixed on the outer of mixing condenser body 6 and places, and described level Four cooling water supply pipe 17 is arranged on the outer wall of level Four cooling water chamber 5 for providing water source for it;Described level Four rotational flow atomized spray injector 18 is arranged in mixing condenser body 6, and this level Four rotational flow atomized spray injector 18 connects with described level Four cooling water chamber 5.
Preferably, in mixing condenser body 6, three grades of chillers be arranged below the first splash board 12. In mixing condenser body 6, level Four chiller be arranged below the second splash board 16. It is arranged below trickle ring 15 at the second splash board 16.
Utilize existing end effect secondary steam pipeline, one layer of one-level following current injection shower nozzle 4 is set in this pipeline, is transformed into parallel-flow condenser by end effect secondary pipe. Existing vacuum salt production, Caustic soda, Natrii Sulfas industry vapo(u)rization system, the specific volume of end effect secondary steam is relatively big, designs for 45-60m/s by flow velocity, so end effect secondary steam pipe is relatively large in diameter. Therefore the present invention arranges one layer of one-level following current injection shower nozzle 4 in end effect secondary steam pipe, plays the effect of injection end effect secondary steam and fixed gas, to overcome the fluid resistance of equipment and pipeline; End effect secondary steam flows to jet initial segment with supersonic speed under the effect of pressure reduction convection current simultaneously, and some vapor is condensed. The reasonable Arrangement of this layer of shower nozzle makes spray cover whole pipeline section, and spraying spray density is less than 40t/m2·h。
Newly-increased one layer of two grades of injection shower nozzle 9 bottom mixing condenser body 6, in the gas of last evaporator evaporation, do not only exist condensated gas (water vapour), there is also part fixed gas. Usual fixed gas extracts by the vacuum equipment arranged after the condenser. Owing to fixed gas is than condensated gas weight, the present invention arranges one layer of two grades of injection shower nozzle 9 bottom condenser, and this layer of shower nozzle has condensed steam concurrently and extract the dual function of fixed gas, and produces following current vacuum.
Change the two-layer seedpod of the lotus shower nozzle of existing condenser secondary steam pipe entrance top into three swirler atomizer 14, level Four rotational flow atomized spray injector 18 respectively, it is therefore an objective to increase the contact area between steam and cooling water, strengthen mass transfer effect. The flow of each rotational flow atomized spray injector is in the scope of 4-50t/h, and work water pressure is 6-12mH2O, nozzle diameter is 12-50mm, and Average droplet diameter is less than 2mm, and at 3m head and aerosolizable, its pump energy consumption is only the 1/3-1/4 of pressure atomization shower nozzle. Two-layer rotational flow atomized spray injector is arranged ringwise, to ensure the initial segment spray non-interference at jet.
By the spray density of mixing condenser body the first half (from the first splash board 12 to level Four rotational flow atomized spray injector 18) from 200-280t/m2H is down to 100-180t/m2H. Secondary steam pipe 1 and mixing condenser body 6 bottom two layers shower nozzle are to the condensation of water vapour and extracting of fixed gas, effectively reduce water vapour amount and the fixed gas amount of mixing condenser body the first half, therefore present invention reduces the spray density on mixing condenser top.
From the indirect steam of end effect vaporization chamber in end effect steam pipe 1, the cooling water jet sprayed by one-level following current injection shower nozzle 4. When the soda pop temperature difference is more than 8 DEG C, indirect steam flows to jet initial segment with supersonic speed; When the soda pop temperature difference is 8 DEG C, water vapour with velocity of sound to jet convection current. Indirect steam is under the ejector action of one-level following current injection shower nozzle 4, and cooled water carries out part cooling, and enters in mixing condenser body 6. Entering the gas in mixing condenser, a part is by the bottom of two grades of injection shower nozzle 9 injections bottom condenser to mixing condenser body 6, and water vapour is by the cooling water condensation from two grades of cooling water chambers 10, and cooled water return pipe 8 is drained;Part fixed gas cooling water ejector action under along with cooling the cooled water return pipe 8 of water backwater drain. The droplet that another part indirect steam is sprayed by the three swirler atomizer 14 on condenser top, level Four rotational flow atomized spray injector 18 cools down, and fixed gas is drained from top fixed gas pipe 19 by vacuum equipment.
In the present invention, secondary steam pipe 1 and four layers of shower nozzle are set in mixing condenser body 6 altogether. Wherein, the major function of one-level following current injection shower nozzle 4 and two grades of injection shower nozzles 9 is injection indirect steam and fixed gas; The major function of three swirler atomizer 14 and level Four rotational flow atomized spray injector 18 is total condensation indirect steam.
For ensureing the total condensation of indirect steam, it is respectively arranged below the first splash board 12 and the second splash board 16 at three swirler atomizer 14 and level Four rotational flow atomized spray injector 18, cooling water secondary is sputtered, increases the time of contact with indirect steam, and effectively prevent from forming short circuit and dead angle. Trickle ring 15 is set at the middle part of mixing condenser body 6, it is prevented that cooling water forms wall stream.
The techno-economic effect of this mixing condenser technological transformation method is as follows:
Embodiment one: according to the technological transformation method of the present invention, the mixing condenser of the four-effect evaporation vacuum system that saltworks produces per year 180,000 tons has carried out technological transformation. Protoatmosphere mixing condenser cylinder section is of a size of Φ 2200x6500, inside sets three grades of sprays, is seedpod of the lotus shower nozzle, and the drop size of generation is relatively big, and vapour-liquid contact area is less; The cooling water of air mixing condenser concentrates in blender entirely, and sprinkle density is up to 289t/m2H; Mixing condenser inlet vacuum is-0.086MPa, and the vacuum of steam jet ejector entrance is-0.090MPa, and namely the drag losses of air mixing condenser is 4000Pa, is equivalent to effective temperature difference and about have lost 7 DEG C. According to the technology of the present invention remodeling method, condenser drag losses have dropped 3000Pa, and end effect secondary steam temperature have dropped 5-7 DEG C, and the same period increases production 10%, is truly realized energy-saving and cost-reducing.
Embodiment two: adopt the technological transformation method of the present invention, the mixing condenser of the five effect evaporation in vacuo systems that Natrii Sulfas factory produces per year 400,000 tons has carried out technological transformation. Design mixing condenser quantity of steam is 40t/h, and cooling water inflow is 3600t/h, and intrinsic vacuum acquirement mode is that countercurrent spray condenser adds vapor jet vacuum pump. The working steam pressure of steam is 0.5Mpa, and steam consumption quantity is 1.4t/h, and the end effect vacuum of original system is 0.086-0.088MPa, and system throughput does not reach design objective. System after engineered is run when stopping steam jet ejector, and end effect vacuum is 0.093MPa, end effect material temperature 42 DEG C, and yield exceedes design objective, and the working steam pressure of first effect is down to 0.20MPa, achieves prominent energy-saving effect.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit; Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. a mixing condenser, it is characterized in that, including: mixing condenser body (6), the top of mixing condenser body (6) is provided with fixed gas pipe (19), bottom is provided with CWR (8), is communicated with secondary steam pipe (1) in the lower section of mixing condenser body (6) side;
It is provided above one-level chiller at described secondary steam pipe (1);
Described one-level chiller includes: one-level cooling water supply pipe (2), one-level cooling water chamber (3), one-level following current injection shower nozzle (4); Described one-level cooling water chamber (3) is fixed on outer the placing of secondary steam pipe (1), and described one-level cooling water supply pipe (2) is arranged on the outer wall of one-level cooling water chamber (3) for providing water source for it; Described one-level following current injection shower nozzle (4) is arranged in secondary steam pipe (1), and this one-level following current injection shower nozzle (4) connects with described one-level cooling water chamber (3).
2. mixing condenser according to claim 1, it is characterised in that be arranged below two grades of chillers at mixing condenser body (6);
Described two grades of chillers include: two grades of injection shower nozzles (9), two grades of cooling water chambers (10), two grades of cooling water supply pipes (11); Described two grades of cooling water chambers (10) are arranged on the inside of mixing condenser body (6), one end of described two grades of cooling water supply pipes (11) is fixing with the top of described two grades of cooling water chambers (10) to be connected, and the other end stretches out outside the sidewall of mixing condenser body (6); Described two grades of injection shower nozzle (9) distributing installations are on the surrounding sidewall of two grades of cooling water chambers (10).
3. mixing condenser according to claim 2, it is characterised in that the middle part of mixing condenser body (6) is provided with three grades of chillers;
Described three grades of chillers include: three grades of cooling water chambers (7), three grades of cooling water supply pipes (13), three swirler atomizers (14); Described three grades of cooling water chambers (7) are fixed on outer the placing of mixing condenser body (6), and described three grades of cooling water supply pipes (13) are arranged on the outer wall of three grades of cooling water chambers (7) for providing water source for it; Described three swirler atomizer (14) is arranged in mixing condenser body (6), and this three swirler atomizer (14) connects with described three grades of cooling water chambers (7).
4. mixing condenser according to claim 3, it is characterised in that in mixing condenser body (6), three grades of chillers be arranged below the first splash board (12).
5. mixing condenser according to claim 3, it is characterised in that the top of mixing condenser body (6) is provided with level Four chiller;
Described level Four chiller includes: level Four cooling water chamber (5), level Four cooling water supply pipe (17), level Four rotational flow atomized spray injector (18); Described level Four cooling water chamber (5) is fixed on outer the placing of mixing condenser body (6), and described level Four cooling water supply pipe (17) is arranged on the outer wall of level Four cooling water chamber (5) for providing water source for it; Described level Four rotational flow atomized spray injector (18) is arranged in mixing condenser body (6), and this level Four rotational flow atomized spray injector (18) connects with described level Four cooling water chamber (5).
6. mixing condenser according to claim 5, it is characterised in that in mixing condenser body (6), level Four chiller be arranged below the second splash board (16).
7. mixing condenser according to claim 6, it is characterised in that be arranged below trickle ring (15) at the second splash board (16).
8. the mixing condenser according to claim 3 or 5, it is characterised in that described three swirler atomizer (14), level Four rotational flow atomized spray injector (18) flow all in the scope of 4-50t/h, work water pressure is 6-12mH2O, nozzle diameter is 12-50mm, and Average droplet diameter is respectively less than 2mm.
9. mixing condenser according to claim 5, it is characterised in that the spray density from the first splash board (12) to level Four rotational flow atomized spray injector (18) is 100-180t/m2·h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610234963.7A CN105674761B (en) | 2016-04-13 | 2016-04-13 | Mixing condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610234963.7A CN105674761B (en) | 2016-04-13 | 2016-04-13 | Mixing condenser |
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| CN105674761A true CN105674761A (en) | 2016-06-15 |
| CN105674761B CN105674761B (en) | 2018-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610234963.7A Expired - Fee Related CN105674761B (en) | 2016-04-13 | 2016-04-13 | Mixing condenser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839797A (en) * | 2017-03-31 | 2017-06-13 | 丁新平 | A kind of condenser for producing froth pulp |
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| JPS55152384A (en) * | 1979-05-15 | 1980-11-27 | Fuji Electric Co Ltd | Direct contact multistage pressure chamber type condenser |
| CN1045174A (en) * | 1990-03-22 | 1990-09-05 | 魏仕英 | Jet-type mixing condenser |
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| CN2520494Y (en) * | 2002-01-17 | 2002-11-13 | 自贡市蓝光应用技术研究所 | Empty tower spray condenser |
| CN201093884Y (en) * | 2007-09-04 | 2008-07-30 | 广西工院糖业科技有限责任公司 | Cross current type jet condenser capable of regulating and controlling |
| CN203928787U (en) * | 2014-06-19 | 2014-11-05 | 济宁市隆基新型建材有限公司 | The remaining vapour condensate recycling device of still kettle |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3423078A (en) * | 1966-03-17 | 1969-01-21 | Gen Electric | Combined jet and direct air condenser |
| JPS5482506A (en) * | 1977-12-15 | 1979-06-30 | Toshiba Corp | Spray type steam condenser |
| JPS55152384A (en) * | 1979-05-15 | 1980-11-27 | Fuji Electric Co Ltd | Direct contact multistage pressure chamber type condenser |
| CN1045174A (en) * | 1990-03-22 | 1990-09-05 | 魏仕英 | Jet-type mixing condenser |
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| CN2413254Y (en) * | 2000-04-07 | 2001-01-03 | 唐山嘉恒实业有限公司 | Slag granulating steam condensation recovery plant |
| CN2520494Y (en) * | 2002-01-17 | 2002-11-13 | 自贡市蓝光应用技术研究所 | Empty tower spray condenser |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839797A (en) * | 2017-03-31 | 2017-06-13 | 丁新平 | A kind of condenser for producing froth pulp |
| CN106839797B (en) * | 2017-03-31 | 2022-12-20 | 丁新平 | Condenser for producing foam products |
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| CN105674761B (en) | 2018-07-03 |
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| CF01 | Termination of patent right due to non-payment of annual fee |