CN206919685U - A kind of melamine molten salt furnace heat recovery system - Google Patents

A kind of melamine molten salt furnace heat recovery system Download PDF

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Publication number
CN206919685U
CN206919685U CN201621443082.8U CN201621443082U CN206919685U CN 206919685 U CN206919685 U CN 206919685U CN 201621443082 U CN201621443082 U CN 201621443082U CN 206919685 U CN206919685 U CN 206919685U
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China
Prior art keywords
preheater
heater
ammonia
molten salt
air
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Expired - Fee Related
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CN201621443082.8U
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Chinese (zh)
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荆云峰
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Individual
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

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  • Treating Waste Gases (AREA)

Abstract

It the utility model is related to heat recovery field in Melamine Production,Provide a kind of melamine molten salt furnace heat recovery system,Including molten salt furnace,It is incubated hot-air heater,Waste heat boiler and air preheater,Carrier gas preheater and blowback ammonia heater,The heat exchanger air inlet of carrier gas preheater and insulation hot-air heater connects with the flue gas exhaust mouth of molten salt furnace,The heat exchanger exhaust outlet of carrier gas preheater and insulation hot-air heater connects with the heat exchanger air inlet of blowback ammonia heater,The heat exchanger exhaust outlet of blowback ammonia heater connects with the heat exchanger air inlet of waste heat boiler,The heat exchanger exhaust outlet of waste heat boiler connects with the heat exchanger air inlet of air preheater,Molten salt furnace discharge flue gas is heated into carrier gas preheater and insulation hot-air heater simultaneously,Heated simultaneously into blowback ammonia heater from carrier gas preheater and insulation hot-air heater discharge flue gas.The utility model is simple in construction, energy-conserving and environment-protective, can be widely applied in Melamine Production.

Description

A kind of melamine molten salt furnace heat recovery system
Technical field
It the utility model is related to heat recovery and utilization technical field in Melamine Production, and in particular to a kind of melamine Molten salt furnace heat recovery system.
Background technology
Melamine is a kind of important chemical products in the industrial production, and melamine can be made by polymerizeing with formaldehyde condensation Resin, available for plastics and coatings industry, it can also make the anti-folding of yarn fabric, anti-shrinking agent;It can be additionally used in firm, resistance to thermal trim Thin plate, moistureproof paper and grey leather tanning agent, the bonding agent of synthesizing fireproof laminate, fixative or curing agent of waterproofing agent etc..Its Modified resin can do metallic paint bright in colour, durable, that hardness is good.Melamine polymerize with formaldehyde condensation made of melamine Polyimide resin is widely used in the manufacture and processing of Wood construction formwork, available for the waterproof of template surface and gluing for block board Even, the reuse number of template is increased.
During Melamine Production, the hot melt salt that molten salt furnace provides mainly melts to the heat exchanger in reactor, carrier gas This three equipment of salt preheater, blowback ammonia fused salt preheater provide heat, and its technical process is shown in accompanying drawing 1.After molten salt furnace The flue gas of section discharges after filter is incubated hot-air heater, waste heat boiler and air preheater, and the deficiency that heat energy withdraws system makes The energy recovery effect obtained in flue gas is poor, 200 DEG C or so of exhaust temperature.The internal circulating load of this flow fused salt is big, fume emission temperature Degree is high, causes molten salt furnace thermic load big, coal consumption, the power consumption increase of salt melting system.
Utility model content
To adapt to the actual demand of melamine molten salt furnace heat recovery, technical problem to be solved in the utility model For:Chimney exit gas temperature can be reduced by providing one kind, and and can reduces the coal consumption of salt melting system and the melamine of power consumption melts Salt stove heat recovery system.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is:A kind of melamine molten salt furnace heat Measure recovery system, including molten salt furnace, insulation hot-air heater, waste heat boiler and air preheater, in addition to carrier gas preheater and anti- Ammonia heater is blown, the flue gas exhaust mouth of the heat exchanger air inlet and molten salt furnace of the carrier gas preheater and insulation hot-air heater connects It is logical, the heat exchanger air inlet of the heat exchanger exhaust outlet and the blowback ammonia heater of the carrier gas preheater and insulation hot-air heater Mouth connection, the heat exchanger exhaust outlet of the blowback ammonia heater connects with the heat exchanger air inlet of the waste heat boiler, described The heat exchanger exhaust outlet of waste heat boiler connects with the heat exchanger air inlet of the air preheater, the flue gas of the molten salt furnace discharge Enter carrier gas preheater and insulation hot-air heater simultaneously and it is heated, from the carrier gas preheater and insulation hot-air heater The flue gas of discharge heats into the blowback ammonia heater and to it simultaneously.
The carrier gas air inlet of the carrier gas preheater connects with compressor, and carrier gas gas outlet connects with reactor.
The ammonia air inlet of the blowback ammonia heater connects with ammonia basin, the outlet of the blowback ammonia heater Mouth connects with Ammonia gas-reservoir tank.
The water inlet of the waste heat boiler connects with condensate pump, and delivery port and the steam basin of the waste heat boiler connect It is logical.
A kind of described melamine molten salt furnace heat recovery system, in addition to smoke duster, the air preheater Heat exchanger exhaust outlet discharge flue gas after the smoke duster dedusting, discharged by air-introduced machine by chimney.
The utility model has the advantages that compared with prior art:Melamine molten salt furnace heat of the present utility model Recovery system is measured, carrier gas fused salt preheater and blowback ammonia fused salt preheater is eliminated, reduces the user of molten salt furnace, reduce Molten salt furnace meets, and has saved coal, the electric consumption of molten salt furnace;In addition, the utility model by flue gas to carrier gas preheater and anti- Blow ammonia preheater to be heated, efficiently utilize the waste heat of flue gas, the exhaust temperature of flue gas is reduced to 120 DEG C;Moreover, Because discharge flue-gas temperature reduces, the load reduction of molten salt furnace air-introduced machine, original carrier gas fused salt preheater, blowback ammonia are eliminated The unfavorable factor such as flue gas resistance increase caused by two equipment of air preheater.
Brief description of the drawings
Fig. 1 is the process chart of melamine molten salt furnace heat recovery system in the prior art;
Fig. 2 is a kind of technological process for melamine molten salt furnace heat recovery system that the utility model embodiment proposes Figure;
In figure:10 for go to be incubated hot-air heater, 11 be self-heat conserving hot-air heater come, 12 be devaporation basin, 13 be self cooling Condensate pump come, 14 be autoreactor internal heater come, 15 be dereaction device internal heater, 16 be self contained gas fused salt preheater and instead Blow ammonia fused salt preheater come, 17 for go carrier gas fused salt preheater and blowback ammonia fused salt preheater, 18 be fused salt groove, 19 be small Salt pump, 20 be big salt pump, 21 be carrier gas dereaction device, 22 to be carrier gas come from compressor, 23 for go Ammonia gas-reservoir tank, 24 be from Ammonia basin comes.
Embodiment
It is right below in conjunction with specific embodiments and the drawings to make the technical solution of the utility model and advantage clearer The technical solution of the utility model is clearly and completely described, it is clear that described embodiment is one of the present utility model Divide embodiment, rather than whole embodiments;Based on the embodiment in the utility model, those of ordinary skill in the art are not having The every other embodiment obtained under the premise of creative work is made, belongs to the scope of the utility model protection.
As described in Figure 2, the utility model embodiment proposes a kind of melamine molten salt furnace heat recovery system, including molten Salt stove 1, insulation hot-air heater 3, waste heat boiler 5, air preheater 6, carrier gas preheater 2 and blowback ammonia heater 4, the load The heat exchanger air inlet of air preheater 2 and insulation hot-air heater 3 connects with the flue gas exhaust mouth of molten salt furnace 1, the carrier gas preheating The heat exchanger exhaust outlet of device 2 and insulation hot-air heater 3 connects with the heat exchanger air inlet of the blowback ammonia heater 4, described The heat exchanger exhaust outlet of blowback ammonia heater 4 connects with the heat exchanger air inlet of the waste heat boiler 5, the waste heat boiler 5 Heat exchanger exhaust outlet connected with the heat exchanger air inlet of the air preheater 6, the flue gas that the molten salt furnace 1 is discharged enters simultaneously Enter carrier gas preheater 2 and insulation hot-air heater 3 and it is heated, changed from the carrier gas preheater 2 and insulation hot-air heater 3 The flue gas of hot device exhaust outlet discharge heats into the blowback ammonia heater 4 and to it simultaneously.
Wherein, the carrier gas air inlet of the carrier gas preheater 2 connects with compressor, and carrier gas gas outlet connects with reactor, Carrier gas is sent into carrier gas preheater 2 by compressor, and the carrier gas after being heated by flue gas enters reactor, so as to what is carried to flue gas Heat is recycled.
Wherein, the ammonia air inlet of the blowback ammonia heater 4 connects with ammonia basin, the blowback ammonia heater 4 gas outlet connects with Ammonia gas-reservoir tank, and the ammonia in ammonia basin enters the blowback ammonia heater 4, is entered by flue gas After row heating, it is sent into Ammonia gas-reservoir tank and is stored, the hot gas carried to flue gas is further recycled.
Wherein, the water inlet of the waste heat boiler 5 connects with condensate pump, the delivery port and steam of the waste heat boiler 5 Basin is connected, and cold water is sent into waste heat boiler by condensate pump, after cold water is heated by the flue gas in waste heat boiler, is discharged to steaming Vapour basin is stored, and the heat carried to flue gas has carried out further recycling.
Further, a kind of melamine molten salt furnace heat recovery system of the present embodiment, in addition to smoke duster 7, The flue gas of the heat exchanger exhaust outlet discharge of the air preheater 6 is passed through after the dedusting of smoke duster 7 by air-introduced machine 8 Chimney 9 is discharged.Carrier gas preheater 2 and 4 recycling to flue gas heat of heater of blowback ammonia so that the flue-gas temperature of discharge Reduce, in addition, the flue gas volume flow in smoke duster 7 is reduced, reduce the load of air-introduced machine 8.
In the utility model embodiment, gas fused salt preheater published originally and blowback ammonia fused salt preheater are eliminated, is added The carrier gas preheater and blowback ammonia preheater preheated using flue gas, because flue gas volume flow-rate ratio flow rate of molten salt is big, need The heat exchanger area of carrier gas preheater 2 and blowback ammonia preheater 4 is increased, those skilled in the art can be actual according to heat exchange Need, to select to set the heat exchange area of the heat exchanger of carrier gas preheater 2 and blowback ammonia preheater 4.
Melamine molten salt furnace heat recovery system of the present utility model, eliminates carrier gas fused salt preheater and blowback ammonia Fused salt preheater, reduce the user of molten salt furnace, reduce meeting for molten salt furnace, save coal, the electric consumption of molten salt furnace;This Outside, the utility model is heated by flue gas to carrier gas preheater and blowback ammonia preheater, efficiently utilizes flue gas Waste heat, the exhaust temperature of flue gas is reduced to 120 DEG C;Being additionally, since discharge flue-gas temperature reduces, the load of molten salt furnace air-introduced machine Reduce, flue gas resistance increase etc. caused by eliminating two original carrier gas fused salt preheater, blowback ammonia preheater equipment is no Sharp factor, therefore, the utility model is simple in construction, energy-conserving and environment-protective, can be widely applied in Melamine Production.
Embodiment of the present utility model is explained in detail above in conjunction with accompanying drawing, but the utility model is not limited to Embodiment is stated, in those of ordinary skill in the art's possessed knowledge, the utility model aims can also not departed from On the premise of various changes can be made.

Claims (5)

1. a kind of melamine molten salt furnace heat recovery system, including molten salt furnace(1), insulation hot-air heater(3), waste heat boiler (5)And air preheater(6), it is characterised in that also including carrier gas preheater(2)With blowback ammonia heater(4), the carrier gas Preheater(2)With insulation hot-air heater(3)Heat exchanger air inlet and molten salt furnace(1)Flue gas exhaust mouth connection, the carrier gas Preheater(2)With insulation hot-air heater(3)Heat exchanger exhaust outlet and the blowback ammonia heater(4)Heat exchanger air inlet Connection, the blowback ammonia heater(4)Heat exchanger exhaust outlet and the waste heat boiler(5)Heat exchanger air inlet connection, The waste heat boiler(5)Heat exchanger exhaust outlet and the air preheater(6)Heat exchanger air inlet connection, the molten salt furnace (1)The flue gas of discharge enters carrier gas preheater simultaneously(2)With insulation hot-air heater(3)And it is heated, from the carrier gas Preheater(2)With insulation hot-air heater(3)The flue gas of discharge enters the blowback ammonia heater simultaneously(4)And it is added Heat.
2. a kind of melamine molten salt furnace heat recovery system according to claim 1, it is characterised in that the carrier gas is pre- Hot device(2)Carrier gas air inlet connected with compressor, carrier gas gas outlet connects with reactor.
A kind of 3. melamine molten salt furnace heat recovery system according to claim 1, it is characterised in that the blowback ammonia Hot-air heater(4)Ammonia air inlet connected with ammonia basin, the blowback ammonia heater(4)Gas outlet and high temperature ammonia Basin connects.
A kind of 4. melamine molten salt furnace heat recovery system according to claim 1, it is characterised in that the waste heat boiler Stove(5)Water inlet connected with condensate pump, the waste heat boiler(5)Delivery port connected with steam basin.
5. a kind of melamine molten salt furnace heat recovery system according to claim 1, it is characterised in that also including flue gas Deduster(7), the air preheater(6)Heat exchanger exhaust outlet discharge flue gas through the smoke duster(7)After dedusting, By air-introduced machine(8)Pass through chimney(9)Discharge.
CN201621443082.8U 2016-12-27 2016-12-27 A kind of melamine molten salt furnace heat recovery system Expired - Fee Related CN206919685U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621443082.8U CN206919685U (en) 2016-12-27 2016-12-27 A kind of melamine molten salt furnace heat recovery system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621443082.8U CN206919685U (en) 2016-12-27 2016-12-27 A kind of melamine molten salt furnace heat recovery system

Publications (1)

Publication Number Publication Date
CN206919685U true CN206919685U (en) 2018-01-23

Family

ID=61311051

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621443082.8U Expired - Fee Related CN206919685U (en) 2016-12-27 2016-12-27 A kind of melamine molten salt furnace heat recovery system

Country Status (1)

Country Link
CN (1) CN206919685U (en)

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Granted publication date: 20180123

Termination date: 20191227