CN110332405A - A kind of steam, condensation heat tracing technique and steam tracing system - Google Patents
A kind of steam, condensation heat tracing technique and steam tracing system Download PDFInfo
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- CN110332405A CN110332405A CN201910635714.2A CN201910635714A CN110332405A CN 110332405 A CN110332405 A CN 110332405A CN 201910635714 A CN201910635714 A CN 201910635714A CN 110332405 A CN110332405 A CN 110332405A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000009833 condensation Methods 0.000 title claims abstract description 11
- 230000005494 condensation Effects 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 211
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 91
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 91
- 239000004571 lime Substances 0.000 claims abstract description 91
- 238000010438 heat treatment Methods 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 13
- 230000001932 seasonal effect Effects 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000004176 ammonification Methods 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 claims description 4
- 238000007710 freezing Methods 0.000 claims description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 230000003020 moisturizing effect Effects 0.000 description 3
- 230000002528 anti-freeze Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000005514 two-phase flow Effects 0.000 description 2
- PZZOEXPDTYIBPI-UHFFFAOYSA-N 2-[[2-(4-hydroxyphenyl)ethylamino]methyl]-3,4-dihydro-2H-naphthalen-1-one Chemical compound C1=CC(O)=CC=C1CCNCC1C(=O)C2=CC=CC=C2CC1 PZZOEXPDTYIBPI-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
- F16L53/32—Heating of pipes or pipe systems using hot fluids
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
It include steam gas station, heat tracing pipe and drain valve the invention discloses a kind of steam, condensation heat tracing technique and steam tracing system, steam tracing system, the steam gas station provides heat tracing by the heat tracing pipe for process stream；The steam condensate generated during heat tracing drains into the circulation lime set Hybrid Heating in steam condensate Hybrid Heating distributor with mixed water pot by the drain valve；The circulation lime set Hybrid Heating is connected with mixed water pot and condensed moisture piping, and the condensed moisture piping connects condensed water circulation device by condensing hot air furnace pipe；The condensed water circulation device is made of lime set holding vessel, water circulating pump.After low temperature heat tracing, about 70-80 DEG C reuse condensed water returns lime set holding vessel；It is pressurizeed by water circulating pump, send to heat tracing circulation lime set Hybrid Heating and mixed with mixed water pot with 0.8MPa, 170 DEG C of steam condensates, be used for low-temperature material heat tracing；Steam tracing system safety, low energy consumption, the low consumption.
Description
Technical field
The invention belongs to petrochemical industry, chemical industry fertilizer enterprises heat tracing pipeline technical field, more particularly to a kind of steam, cold
Solidifying heat tracing technique and steam tracing system.
Background technique
Outside petrochemical industry, chemical industry fertilizer enterprises piping lane design in, due to needed in process stream transmission process it is antifreeze it is anti-condensation,
Anti- viscosity decline or the requirement for preventing temperature drop need to carry out material conveying pipe using heat sources such as steam, hot water, electricity indirect
It heats and (is referred to as heat tracing), in a variety of heat tracing modes, steam is easily obtained due to thermal capacity height, is convenient for conveying, using the widest
It is general, but steam tracing exists simultaneously following problems:
(1) energy consumption is high, and after steam tracing is cooling, steam condensate enters lime set recycling can, a large amount of low level by drain valve
Thermal energy is wasted；
(2) steam loss is big, and drain valve has the steam leakage of 3-8%, causes a large amount of vapour losses, while piping lane is more
Leakage vapour in place's emits vapour, and effect on environment is poor；
(3) due to being unstable stream-liquid two-phase flow in pipeline after drain valve, Yi Yinqi noise, water attack and vibration are piping lanes
Insecurity factor；
(4) tracing system be in it is uncontrollable, can not detecting state, temperature is not easy to control, easily make material overheat or concurrent heating not
Foot, influences delivery safety；
(5) hydrophobic valve replacement is frequent, and maintenance load is big.
Therefore, a kind of reasonable heat tracing technique is explored, had not only met while material conveying requires and has reduced thermal energy consumption, but also can
Steam condensate loss is reduced, reducing heat tracing cost, improving operation conditions is the project that steam tracing needs to solve.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of safe low energy consumption, low consumed steam tracing system.
In order to solve the above technical problems, the technical solution adopted by the present invention is that, which includes that steam adds
Vapour station, heat tracing pipe and drain valve, the steam gas station provide heat tracing by the heat tracing pipe for process stream；During heat tracing
The steam condensate of generation drains into the circulation lime set Hybrid Heating in steam condensate Hybrid Heating distributor by the drain valve
With mixed water pot；The circulation lime set Hybrid Heating is connected with mixed water pot and condensed moisture piping, and the condensed moisture piping passes through
Condensing hot air furnace pipe connects condensed water circulation device；The condensed water circulation device is made of lime set holding vessel, water circulating pump.
Heat tracing pipe in above-mentioned technical proposal is used for low temperature heat tracing, and heat tracing condensed water enters low temperature by condensed moisture piping
After the heat tracing pipe heat tracing of material, after low temperature heat tracing, about 70-80 DEG C reuse condensed water returns lime set holding vessel；Pass through water circulating pump
Pressurization is sent to heat tracing circulation lime set Hybrid Heating and is mixed with mixed water pot with 0.8MPa, 170 DEG C of steam condensates, is used for low temperature object
Expect heat tracing；Steam tracing system safety, low energy consumption, the low consumption.
Steam tracing is to provide heat tracing, heat tracing mistake to the high process stream of corresponding requirements heat tracing temperature using 1.0MPa steam
170 DEG C of the steam condensate generated in journey drains into circulation lime set Hybrid Heating with mixed water pot by drain valve；
Preferably, which further includes having seasonal heat tracing pipe, through with thermogenetic condensed water through circulating condensing water return water
General pipeline, which enters in the lime set holding vessel, to be stored.
Heat tracing is carried out to Anti-freezing pipeline etc. with 70-80 DEG C of circulating condensing water return water, about 60-70 DEG C condensed water is through following after heat tracing
Ring condensate return general pipeline, which enters in lime set holding vessel, to be stored.
Preferably, steam heat patching device is connect with the water circulating pump in the condensed water circulation device；In addition, the steam
Heat patching device is also connected with the circulation lime set Hybrid Heating with mixed water pot.
When in winter or with shortage of heat, steam concurrent heating need to be used, concurrent heating mode can set reboiler in lime set holding vessel,
Or board-like set board-like vapor-water heat exchanger, it is ensured that circulated heat meets heat tracing needs.
Preferably, the steam heat patching device is to set reboiler in lime set holding vessel, or is board-like vapor-water heat exchanger.
Preferably, the circulation mixed water pot of lime set Hybrid Heating includes mixed water pot ontology, and described mixed this body side surface of water pot is set
It is equipped with hot water injector, hot water injector one end is located at the mixed water pot outer body, and the other end is located at the mixed water pot
In ontology；Steam condensate injector, the interconnecting piece of the steam condensate injector are provided with below the hot water injector
Positioned at the outside of the mixed water pot ontology, the endless tube of the steam condensate injector is located in the mixed water pot ontology, described
The lower surface of endless tube is provided with several nozzles；Mixed hot water exports the top that the mixed water pot ontology is arranged in.
The purpose of hot water injector is allowed into the mixed intracorporal 70 DEG C of hot water of water pot by rotation counterclockwise, so as to solidifying with steam
Liquid is sufficiently mixed, and steam condensate injector is made of interconnecting piece and endless tube two parts, and endless tube lower surface is provided with nozzle, and 170 DEG C
Steam condensate enters endless tube and sprays into mixed water pot downwards, to be sufficiently mixed with 70 DEG C of hot water；Mixed hot water outlet is arranged described
The top of mixed water pot ontology, so that just going out from the top of mixed water pot ontology after being sufficiently mixed.
Preferably, the top of the mixed water pot ontology is provided with silk screen bubble trap, the silk screen bubble trap is using several
Layer stainless steel cloth intersection stacks；In the top of the silk screen bubble trap, and it is located at the mixed water pot outer body and pressure is installed
Power table interface；In the lower section of the silk screen bubble trap, and it is located at the mixed water pot outer body and thermometer boss is installed；Institute
The middle position for stating mixed water pot ontology is provided with manhole；The bottom of the mixed water pot ontology is additionally provided with supporting leg；Drain position
In the bottom of the mixed water pot ontology；The interconnecting piece of the steam condensate injector is flange-interface；The quantity of the nozzle is
12, diameter 6mm.
Due to containing some vapor in steam condensate, in order to avoid steam enters hotwater tracing by mixed hot water outlet
Tank is provided with silk screen bubble trap on tank body top, and silk screen bubble trap is stacked using several layers stainless steel cloth intersection, vapor bubbles
It is attached on silk screen bubble trap, with hot water contacts, becomes liquid after cooling, managed into hotwater tracing.
Preferably, which is additionally provided with condensing hot air furnace pipe network, and the condensing hot air furnace pipe network is stored to the lime set
Tank moisturizing.
Preferably, the lime set holding vessel, which is equipped with, concentrates thermometer, while the lime set holding vessel is additionally provided with safety valve.
If condensate temperature in winter lime set holding vessel is lower than 70 DEG C, or when with shortage of heat, steam is sent into solidifying
Reboiler in liquid holding vessel, or with vapor-water heat exchanger concurrent heating.
The present invention will also solve the problems, such as that another is to provide a kind of steam, condensation heat tracing technique, comprising the following steps:
(1) steam passes through steam gas station, into steamtraced piping, after material heat tracing, is coagulated steam by drain valve
Liquid is sent into circulation lime set Hybrid Heating with mixed water pot；Steam condensate and circulating condensing in the mixed water pot of circulation lime set Hybrid Heating
Water is mixed into the heat tracing condensed water that temperature is 90-110 DEG C, 0.8MPa；
(2) it is cold into 70-80 DEG C after heat tracing condensed water enters low-temperature material heat tracing pipeline tracing by condensed moisture piping
After condensate manifold trunk, it is incorporated to circulating condensing water return main, send in lime set holding vessel and stores；
(3) seasonal heat tracing: heat tracing carried out to Anti-freezing pipeline with 70-80 DEG C of circulating condensing water return water, 60-70 DEG C after heat tracing
Condensed water enters in lime set holding vessel through circulating condensing water return main to be stored；
(4) condensate water circulatory: the condensed water in lime set holding vessel, which is sent by water circulating pump pressurization to circulation lime set mixing, to be added
With mixed water pot, the steam condensate (SC) generated with tracing steam mixes heat；
(5) periodically PH is adjusted in ammonification；Since condensed water is easily in subacidity, PH, control condensate system corrosion are adjusted in periodically ammonification.
Preferably, in the step (1), the steam by steam gas station is 1.0MPa, 184 DEG C；It will by drain valve
170 DEG C, the steam condensate of 0.8MPa be sent into circulation lime set Hybrid Heating with mixed water pot；In the mixed water pot of circulation lime set Hybrid Heating
Interior steam condensate is mixed with 70 DEG C of circulating condensing water.
Preferably, in the step (4), lime set holding vessel operating pressure 0.35-0.4MPa.
Detailed description of the invention
It is further described with reference to the accompanying drawing with embodiments of the present invention:
Fig. 1 is steam tracing system structural schematic diagram of the present invention；
Fig. 2 is the mixed pitcher configuration schematic diagram of circulation lime set Hybrid Heating；
Fig. 3 is Fig. 2 overlooking structure diagram；
Fig. 4 is steam condensate injector structures schematic diagram；
Fig. 5 is Fig. 2 cross-sectional structure schematic diagram；
Fig. 6 is hot water injector structures schematic diagram；
Fig. 7 is the structural schematic diagram of silk screen bubble trap；
Wherein: 1- steam gas station；2- heat tracing pipe；3- drain valve；4- steam condensate Hybrid Heating distributor；401- is followed
The mixed water pot of ring lime set Hybrid Heating；402- mixes water pot ontology；403- hot water injector；404- steam condensate injector；405-
Interconnecting piece；406- endless tube；407- nozzle；408- supporting leg；409- drain；4010- manhole；4011- silk screen bubble trap；4012-
Thermometer boss；4013- pressure gauge connection；The outlet of 4014- mixed hot water；The piping of 5- condensed moisture；6- condensing hot air furnace pipe；7-
Condensed water circulation device；701- lime set holding vessel；702- water circulating pump；8- seasonality heat tracing pipe；9- circulating condensing water return water is total
Pipe；10- steam heat patching device；The board-like vapor-water heat exchanger of 1001-；11- condensing hot air furnace pipe network；12- concentrates thermometer；13- peace
Full valve.
Specific embodiment
Steam tracing system of the invention includes steam gas station 1, heat tracing pipe 2 and hydrophobic using PLC control system
Valve 3, steam gas station 1 provide heat tracing by the heat tracing pipe 2 for process stream；The steam condensate generated during heat tracing passes through
The drain valve 3 drains into the circulation lime set Hybrid Heating in steam condensate Hybrid Heating distributor 4 with mixed water pot 401；It is described
Circulation lime set Hybrid Heating is connect with mixed water pot 401 with condensed moisture piping 5, and the condensed moisture piping 5 is returned by condensed water
Closed tube 6 connects condensed water circulation device 7；The condensed water circulation device 7 is made of lime set holding vessel 701, water circulating pump 702,
As shown in Figure 1, arrow in figure be tracing steam or condensation flow to.
The steam tracing system of the present embodiment further includes having seasonal heat tracing pipe 8, through with thermogenetic condensed water through recycling
Condensate return general pipeline 9, which enters in the lime set holding vessel 701, to be stored；Steam heat patching device 10 and the condensed water circulation device
Water circulating pump 702 in 7 connects；In addition, the steam heat patching device 10 is also connected with the circulation lime set Hybrid Heating with mixed water
Tank 401；Steam heat patching device 10 in the present embodiment is board-like vapor-water heat exchanger 1001, be can also be in lime set holding vessel 701
Inside set reboiler.
System is additionally provided with condensing hot air furnace pipe network 11, and the condensing hot air furnace pipe network 11 is to the lime set holding vessel 701
Moisturizing；Lime set holding vessel 701, which is equipped with, concentrates thermometer 12, while the lime set holding vessel 701 is additionally provided with safety valve 13.
When specifically used: steam tracing is to be provided using 1.0MPa steam to the high process stream of corresponding requirements heat tracing temperature
Heat tracing, 170 DEG C of the steam condensate generated during heat tracing drain into circulation lime set Hybrid Heating with mixed water pot by drain valve 3
401；
Steam condensate Hybrid Heating distributor 4 is matched by a circulation lime set Hybrid Heating with mixed water pot 401, condensed moisture
Pipe 5 forms, and circulation lime set Hybrid Heating is mixed 0.8MPa, 170 DEG C of steam condensate and 70 DEG C of circulation lime set with mixing water pot 401
It closes, at 90-110 DEG C of circulating condensing water, condensed moisture is sent to be piped 5, after material heat tracing, condensate temperature drops to 70-80 DEG C,
Condensed water after cooling enters condensed water circulation device 7 by condensing hot air furnace pipe 6；Seasonal heat tracing, can be by valve by 70-
80 DEG C of condensate return is sent into the condensed moisture piping 5 of seasonal heat tracing；
Lime set Hybrid Heating is recycled with water pot 401 is mixed as illustrated in figs. 2-7, includes mixed water pot ontology 402, the mixed water pot
402 side of ontology is provided with hot water injector 403, as shown in fig. 6, described 403 one end of hot water injector is located at the mixed water pot
402 outside of ontology, the other end are located in the mixed water pot ontology 402；The lower section of the hot water injector 403 is provided with steam
Lime set injector 404, as shown in figure 4, the interconnecting piece 405 of the steam condensate injector 404 is located at the mixed water pot ontology 402
Outside, the endless tube 406 of the steam condensate injector 404 is located in the mixed water pot ontology 402, in the endless tube 406
Lower surface is provided with several nozzles 407；The top of the mixed water pot ontology 402 is arranged in mixed hot water outlet 4014.
It is provided with silk screen bubble trap 4011 (as shown in Figure 7) on the top of the mixed water pot ontology 402, the silk screen de-bubble
Device 4011 is stacked using several layers stainless steel cloth intersection, in the present embodiment, is intersected using 5 layers of 1 × 8 mesh stainless steel cloth of φ
It stacks；In the top of the silk screen bubble trap 4011, and it is located on the outside of the mixed water pot ontology 402 and pressure gauge connection is installed
4013；In the lower section of the silk screen bubble trap 4011, and it is located on the outside of the mixed water pot ontology 402 and thermometer boss is installed
4012。
The middle position of the mixed water pot ontology 402 is provided with manhole 4010；The bottom of the mixed water pot ontology 402
It is additionally provided with supporting leg 408；Drain 409 is located at the bottom of the mixed water pot ontology 402；The steam condensate injector 404
Interconnecting piece 405 is flange-interface；The quantity of the nozzle 407 is 12, diameter 6mm.
When specifically used: mixed water pot ontology 402 presses 200 DEG C, and 1.0MPa pressure design, hot water injector 403 connects for flange
Mouth (connection external pipe is used, i.e., heat tracing pipe 2 extends the pipeline to come) and inlet two parts, the purpose of hot water injector 403
It is to allow 70 DEG C of hot water into the mixed water pot 401 of circulation lime set Hybrid Heating by rotation counterclockwise, so as to abundant with steam condensate
Mixing.Steam condensate injector 404 is made of flange-interface (interconnecting piece 405) and 406 two parts of endless tube, 406 lower surface of endless tube
It is provided with 12407,170 DEG C of steam condensates of nozzle enter endless tube 406 and spray into mixed water pot downwards, so as to 70 DEG C of heat
Water is sufficiently mixed.Due to containing some vapor in steam condensate, in order to avoid steam passes through the mixed water of circulation lime set Hybrid Heating
The mixed hot water outlet at 401 top of tank enters hotwater tracing's tank, and tank body top is provided with silk screen bubble trap 4011, silk screen de-bubble
Device 4011 is stacked using 5 layers of 1 × 8 mesh stainless steel cloth of φ intersection, and vapor bubbles are attached on silk screen bubble trap 4011, with hot water
Contact, becomes liquid after cooling, manages into hotwater tracing.
Condensed water circulation device 7 is made of lime set holding vessel 701, water circulating pump 702, and 702 outlet header of water circulating pump sets
Flowmeter；Lime set holding vessel 701 matches temperature, pressure, liquid automatic control；70-80 DEG C of condensate return enters lime set holding vessel
701, it is pressurizeed, is sent to heat tracing circulation lime set Hybrid Heating mixed water pot 401 and 0.8MPa, 170 DEG C of steamings by water circulating pump 702
The mixing of vapour lime set, is used for low-temperature material heat tracing；
702 outlet header's low flow velocity of heat tracing pressurized circulation water pump is assigned to the mixed water pot 401 of each circulation lime set Hybrid Heating,
It is mixed with the 0.8MPa generated after 1.0MPa steam tracing ,~170 DEG C of condensate liquid, forms mixed water pot and export condensate temperature
90-110 DEG C, pressure~0.8MPa condensed water as low temperature requirements material heat tracing use；
After low temperature heat tracing ,~70-80 DEG C of reuse condensed water returns lime set holding vessel 701；Lime set holding vessel 701 is equipped with liquid
Position control, extra condensed water directly arrange low pressure condensed water recovery tube net 11, and drainpipe sets flowmeter, and (flow is steam consumption
Amount) and check-valves；Seasonal heat tracing pipe 8 carries out heat tracing to antifreeze equal pipelines with 70-80 DEG C of circulating condensing water return water, after heat tracing
About 60-70 DEG C condensed water enters in lime set holding vessel 701 through circulating condensing water return main 9 to be stored；
When water return amount deficiency, condensing hot air furnace pipe network 11 is to 701 moisturizing of lime set holding vessel, and water supply pipe sets switch valve, by coagulating
701 Liquid level of liquid holding vessel, it is ensured that tracing system safety.
When in winter or with shortage of heat, steam concurrent heating need to be used, concurrent heating mode is to set board-like vapor-water heat exchanger 1001, it is ensured that
Circulated heat meets heat tracing needs.
The steam tracing system of the present embodiment realizes the journey of steam tracing by configuring simple, practical PLC control system
Sequence management, detection, adjusting；High-order, Lowlevel thermal energy classification rationally utilizes running cost to reduce；Completely during collection steam tracing
The lime set of generation accomplishes steam, lime set~0 loss, eradicates the leakage vapour to heat tracing pipe, emits vapour phenomenon, improve working environment；No
Two-phase Flow Pipeline Transport, removal vibration hidden danger.
According to the steam tracing system of the present embodiment, steam, condensation heat tracing technique the following steps are included:
(1) steam passes through steam gas station, into steamtraced piping, after material heat tracing, is coagulated steam by drain valve
Liquid is sent into circulation lime set Hybrid Heating with mixed water pot；Steam condensate and circulating condensing in the mixed water pot of circulation lime set Hybrid Heating
Water is mixed into the heat tracing condensed water that temperature is 90-110 DEG C, 0.8MPa；
(2) it is cold into 70-80 DEG C after heat tracing condensed water enters low-temperature material heat tracing pipeline tracing by condensed moisture piping
After condensate manifold trunk, it is incorporated to circulating condensing water return main, send in lime set holding vessel and stores；
(3) seasonal heat tracing: heat tracing carried out to Anti-freezing pipeline with 70-80 DEG C of circulating condensing water return water, 60-70 DEG C after heat tracing
Condensed water enters in lime set holding vessel through circulating condensing water return main to be stored；
(4) condensate water circulatory: the condensed water in lime set holding vessel, which is sent by water circulating pump pressurization to circulation lime set mixing, to be added
With mixed water pot, the steam condensate (SC) generated with tracing steam mixes heat；
(5) periodically PH is adjusted in ammonification.
In the step (1), the steam by steam gas station is 1.0MPa, 184 DEG C；By drain valve by 170 DEG C,
The steam condensate of 0.8MPa is sent into circulation lime set Hybrid Heating with mixed water pot；The steam in the mixed water pot of circulation lime set Hybrid Heating
Lime set is mixed with 70 DEG C of circulating condensing water.
In the step (4), lime set holding vessel operating pressure 0.35-0.4MPa.
Basic principles and main features and advantage of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (10)
1. a kind of steam tracing system includes steam gas station, heat tracing pipe and drain valve, which is characterized in that the steam adds
Vapour station provides heat tracing by the heat tracing pipe for process stream；The steam condensate generated during heat tracing is arranged by the drain valve
The mixed water pot of circulation lime set Hybrid Heating into steam condensate Hybrid Heating distributor；The circulation lime set Hybrid Heating is used
Mixed water pot and condensed moisture piping connect, and the condensed moisture piping connects condensed water circulation device by condensing hot air furnace pipe；
The condensed water circulation device is made of lime set holding vessel, water circulating pump.
2. steam tracing system according to claim 1, which is characterized in that the system further includes having seasonal heat tracing pipe,
It is stored through entering in the lime set holding vessel with thermogenetic condensed water through circulating condensing water return main.
3. steam tracing system according to claim 1 or 2, which is characterized in that steam heat patching device and the condensed water
Water circulating pump connection in circulator；It is mixed in addition, the steam heat patching device is also connected with the circulation lime set Hybrid Heating use
Water pot.
4. steam tracing system according to claim 3, which is characterized in that the steam heat patching device is to store in lime set
Reboiler is set in tank, or is board-like vapor-water heat exchanger.
5. steam tracing system according to claim 4, which is characterized in that circulation lime set Hybrid Heating mixed water pot, packet
Mixed water pot ontology is included；Described mixed this body side surface of water pot is provided with hot water injector, and hot water injector one end is located at described
Mixed water pot outer body, the other end are located in the mixed water pot ontology；It is solidifying that steam is provided with below the hot water injector
Liquid injector, the connecting portion of the steam condensate injector is in the outside of the mixed water pot ontology, the steam condensate injection
The endless tube of device is located in the mixed water pot ontology, and the lower surface of the endless tube is provided with several nozzles；Mixed hot water outlet
The top of the mixed water pot ontology is set.
6. the mixed water pot of heat tracing according to claim 5, which is characterized in that be provided on the top of the mixed water pot ontology
Silk screen bubble trap, the silk screen bubble trap are stacked using several layers stainless steel cloth intersection；In the top of the silk screen bubble trap,
And it is located at the mixed water pot outer body and pressure gauge connection is installed；In the lower section of the silk screen bubble trap, and it is located at described mixed
Water pot outer body is equipped with thermometer boss；The middle position of the mixed water pot ontology is provided with manhole；The mixed water
The bottom of tank ontology is additionally provided with supporting leg；Drain is located at the bottom of the mixed water pot ontology；The steam condensate injector
Interconnecting piece is flange-interface；The quantity of the nozzle is 12, diameter 6mm.
7. steam tracing system according to claim 6, which is characterized in that the lime set holding vessel, which is equipped with, concentrates temperature
Meter, while the lime set holding vessel is additionally provided with safety valve.
8. a kind of steam, condensation heat tracing technique, which comprises the following steps:
(1) steam passes through steam gas station, into steamtraced piping, after material heat tracing, is sent steam condensate by drain valve
Enter to recycle lime set Hybrid Heating with mixed water pot；Steam condensate and circulating condensing water are mixed in the mixed water pot of circulation lime set Hybrid Heating
Synthesis temperature is the heat tracing condensed water of 90-110 DEG C, 0.8MPa；
(2) after heat tracing condensed water enters low-temperature material heat tracing pipeline tracing by condensed moisture piping, into 70-80 DEG C of condensed water
After manifold trunk, it is incorporated to circulating condensing water return main, send in lime set holding vessel and stores；
(3) heat tracing, 60-70 DEG C of condensation after heat tracing seasonal heat tracing: are carried out to Anti-freezing pipeline with 70-80 DEG C of circulating condensing water return water
Water enters in lime set holding vessel through circulating condensing water return main to be stored；
(4) condensate water circulatory: the condensed water in lime set holding vessel, which is sent by water circulating pump pressurization to circulation lime set Hybrid Heating, to be used
Mixed water pot, the steam condensate (SC) generated with tracing steam mix；
(5) periodically PH is adjusted in ammonification.
9. steam according to claim 8, condensation heat tracing technique, which is characterized in that in the step (1), by steam
The steam of gas station is 1.0MPa, 184 DEG C；The steam condensate of 170 DEG C, 0.8MPa circulation lime set is sent by drain valve to mix
The mixed water pot of heating；Steam condensate is mixed with 70 DEG C of circulating condensing water in the mixed water pot of circulation lime set Hybrid Heating.
10. steam according to claim 9, condensation heat tracing technique, which is characterized in that in the step (4), lime set storage
Deposit tank operating pressure 0.35-0.4MPa.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112747185A (en) * | 2020-12-10 | 2021-05-04 | 安徽金禾实业股份有限公司 | Material conveying pipe heat tracing device and material conveying heat tracing method for alkylation section |
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Effective date of registration: 20201112 Address after: Dong Po Era World Plaza in Gulou District of Nanjing city in Jiangsu province 210036 1 hit 1608 room Applicant after: NANJING ZHONGTE CHEMICAL POWER EQUIPMENT Co.,Ltd. Address before: 210015 Xiaojie No. 1, Gulou District, Nanjing City, Jiangsu Province, 3-7 Applicant before: Nanjing Kaixiang Pipeline Engineering Co.,Ltd. |