CN203642143U - Flue gas condensation type superheated steam boiler - Google Patents

Flue gas condensation type superheated steam boiler Download PDF

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Publication number
CN203642143U
CN203642143U CN201320718932.0U CN201320718932U CN203642143U CN 203642143 U CN203642143 U CN 203642143U CN 201320718932 U CN201320718932 U CN 201320718932U CN 203642143 U CN203642143 U CN 203642143U
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CN
China
Prior art keywords
boiler
superheated steam
steam
flue gas
type superheated
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CN201320718932.0U
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Chinese (zh)
Inventor
卢海刚
任惠军
孙交成
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安阳方快锅炉有限公司
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Priority to CN201320718932.0U priority Critical patent/CN203642143U/en
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Publication of CN203642143U publication Critical patent/CN203642143U/en

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Abstract

The utility model discloses a flue gas condensation type superheated steam boiler which comprises a combustor arranged in front of a hearth, a furnace pipe for combusting fuel in the hearth, a boiler shell, a flow pipe bundle arranged on the upper surface of the hearth, a reversal chamber connected with the flow pipe bundle and the tail end of the hearth, a front furnace smoke box positioned on the front upper part of the boiler and a flue positioned at the top of the boiler, wherein a superheater, a condenser and an economizer are arranged in the flue gas condensation type superheated steam shell type boiler. The flue gas condensation type superheated steam boiler can accelerate the rising speed of water temperature in a water pipe, shorten the time for converting saturated steam into superheated steam, avoid energy waste caused by different steam amounts within a time period, reduce the fault rate of devices in the boiler, guarantee normal production and reduce energy consumption, and the service life of the boiler is prolonged.

Description

A kind of soot condensing type superheated steam boiler

Technical field

A kind of soot condensing type superheated steam boiler, particularly soot condensing type superheated steam boiler, belongs to field of boilers.

Background technology

For a long time, as the boiler of heating equipment, mainly use Coal Energy Source to heat.Because coal-burning boiler can produce a large amount of flue gases, meeting contaminated air, meanwhile, is also a kind of environmental contaminants through the slag of burning.

In the last few years, China had found and had exploited a large amount of natural gases, had set up the heavy construction of transfering natural gas from the west to the east, meanwhile, had introduced the external pipeline such as natural gas, fuel oil, and comparatively hydrocarbon rich resource is provided.

Along with the raising of environmental consciousness, the continuous progress of science and technology, adds the convenience that oil gas type fuel has the conveying of being easy to and uses, and environmental pollution is minimum, the feature that calorific capacity is high.Use oil gas Substitute coal, provide a kind of new way for improving city environmental quality.

Start to put on market as the boiler plant of fuel using fuel oil and combustion gas, and obtained applying, use clean energy resource boiler to become a kind of trend.Some areas and industry start restriction and build coal heating boiler; thereby bring into use natural gas, oil burning boiler; but for large-scale pan shell type superheated steam boiler; the energy resource consumption of boiler is relatively large; because device in equipment is subject to the impact of hyperthermia and superheating; there will be fault in various degree, particularly throughout the year Industrial Boiler, the station boiler of running, once break down just need to shut down, this will certainly affect normal production.

In power station, locomotive and marine boiler, in order to improve the thermal efficiency of cycle of whole Steam Power Equipment, adopt superheated steam, superheated steam can reduce the moisture content in turbine discharge.The height of superheat steam temperature depends on the factors such as pressure, evaporation capacity, the resistance to elevated temperatures of steel and the rate of exchange of fuel and steel of boiler, and concerning station boiler, the boiler of 4 MPas is generally 450 DEG C of left and right; Boilers more than 10 MPas is 540~570 DEG C.Minority station boiler also has the higher overheating steam temperature of employing (even can reach 650 DEG C) steam.

The process of superheated steam in steam turbine is an adiabatic expansion, and in this process, steam pressure reduction, temperature reduce.If boiler for producing is saturated vapor, steam can become wet saturated steam after entering steam turbine acting, and steam will be with moisture (part steam liquefied), and steam turbine can be received the impact of water and the cavitation of exhaust stage blade.Meanwhile, turbine speed very high (3000rpm), now the water droplet in steam can cause great damage to steam turbine; In addition also can reduce, the internal efficiency ratio of steam turbine.Therefore, the steam of boiler for producing at any time, as long as sending into steam turbine, just must ensure 50 DEG C of above degrees of superheat, can effectively avoid like this red switch steam turbine to rotate and drive the situation of generator work to occur.Superheated steam must be produced, the requirement of steam turbine work could be met.

In practice, the quantity of steam that often quantity of steam of boiler output and client are used does not mate completely, also sometimes do not mate with the steam production of boiler in different period clients' steam use amount, this will cause the residue of steam production and foot phenomenon not, there will be or quantity of steam residue, or the quantity of steam deficiency of client.Particularly superheated steam, the energy consuming in the production time large, cost is long, if can not use in time or be discharged, is all a kind of very phenomenon of waste.On the contrary, in order cutting the waste, if stop transport boiler in the time that client does not use steam, once client needs, to be difficult to provide in time steam, because start heating from cold water, need to spend certain hour and promote water temperature, reach evaporating state.Under this situation, or long-term boiler operation, meet the demand of client, client during without steam, falls remaining discharge of steam; When the clients such as shutdown use, opening boiler operation.But, the frequent starting of boiler, frequently stop, needing to heat up or cooling, this itself is exactly a kind of waste, also there is to certain influence in the life-span of equipment, and can brings operating unstable.How solving this predicament, is the difficult problem that heating power department faces.

Summary of the invention

The technical problem that the utility model solves is used superheated steam amount can not mate completely in the different periods for general boiler manufacture superheated steam time length, energy consumption superheated steam amount and client large, boiler output, bring waste of steam, high cost, the problem that whole efficiency is low, its objective is and provide one neither to waste energy, can meet again the soot condensing type superheated steam boiler of the required quantity of steam of client.

The technical scheme that the utility model is taked: a kind of soot condensing type superheated steam boiler, comprise the burner arranging before burner hearth, the flue of burner hearth fuel combustion, boiler shell, be arranged on the flowing bundle above burner hearth, connect the return combustion chamber of flowing bundle and burner hearth end, be positioned at the forehearth smoke box of boiler front upper part, be positioned at the flue at boiler top, superheater is equipped with in described soot condensing type superheated steam boiler, condenser and energy-saving appliance, described superheater forms with serpentine coil, saturated vapor import and superheated steam outlet arrange respectively two headers, shell steam (vapor) outlet is connected with superheater import, tube side one end of described energy-saving appliance is connected with softened water tank, one end is connected with boiler in addition, the heating surface of described condenser is mainly made up of high frequency welded fin-tube.

The good effect that this kind of soot condensing type superheated steam boiler has is: the hoisting velocity that can accelerate water temperature in water pipe, shorten the time from saturated vapor to superheated steam, solve the energy waste that brings because of time period steam consumption difference, reduce the fault rate of installing in stove, ensure normal production, reduce energy resource consumption, the service life of prolonged boiler.

Brief description of the drawings

Fig. 1 is the generalized section of traditional dry back of the body formula two backhaul smaller hard flour pancake boiler sides.

Fig. 2 is soot condensing type superheated steam boiler side generalized section.

Fig. 3 is the front schematic view of soot condensing type superheated steam boiler.

Fig. 4 is the generalized section of superheater.

Detailed description of the invention

Fig. 1 is traditional dry back of the body formula two backhaul smaller hard flour pancake boiler side generalized sections.Describe with regard to the steam manufacturing process of conventional boiler referring to Fig. 1.

Fig. 1 is traditional dry back of the body formula two backhaul smaller hard flour pancake boilers.In figure 100: return combustion chamber, 101: front smoke box, 102: smoke box, 103: burner interface, 104: burner hearth, 105: corrugated flue, 106: convection bank.

It is below the steam manufacture process in conventional boiler.The burner being connected on burner interface 103 is lighted combustion gas or fuel oil, burning in burner hearth 104, in order to prevent flue expanded by heating, generally be designed to be able to alleviate the corrugated flue 105 of thermal expansion, flue gas after burning enters convection bank 106 through return combustion chamber 100, through coming and going mobile flue gas, the water heating in boiler is become to steam (or hot water) and send client, a small amount of flue gas of generation is discharged from flue.

As mentioned above; in some industries; in order to protect the safe operation of equipment; need to produce superheated steam; only depend on common heating boiler to produce superheated steam, can increase the heat time, and steam raising amount is not high; meanwhile, this boiler is difficult to meet the problem of energy waste that client brings in different time sections steam consumption difference or gas consumption closed portion boiler when few.The specific embodiments addressing this is that with regard to technical solutions of the utility model referring to Fig. 2, Fig. 3, Fig. 4 describes.

Fig. 2 is soot condensing type superheated steam boiler side generalized section.Fig. 3 is soot condensing type superheated steam boiler front schematic view.Wherein 100: return combustion chamber, 101: front smoke box, 104: burner hearth, 105: corrugated flue, 106: convection bank, 200: superheater, 108: burner, 207: condenser, 208: energy-saving appliance, 301A: saturated vapor goes out pipe.

Fig. 3 is the front schematic view of soot condensing type superheated steam boiler.Wherein, 301A: saturated vapor outlet, 300A: saturated vapor import, 302A: superheated steam outlet.

Fig. 4 is the generalized section of superheater.Wherein, 300A: saturated vapor inlet header, 302A: superheated steam outlet, 402: serpentine coil, 403: bend pipe, 305: smoke inlet, 306: exhanst gas outlet.

Describe with regard to the steam manufacture process of soot condensing type superheated steam boiler referring to Fig. 2, Fig. 3, Fig. 4.

In soot condensing type superheated steam boiler, every is all provided with superheater 200, condenser 207, energy-saving appliance 208

In soot condensing type superheated steam boiler, the flow process of flue gas is as follows: first burner 108 fire fuel, fuel is fully burned in burner hearth 104, flame and flue gas are upwards turned back 90 ° in return combustion chamber 100, enter convection bank 106, flue gas, from convection bank 106 out, enters front smoke box 101, flows into superheater 200, pass through again energy-saving appliance 208, condenser 207, finally discharge from chimney.In order to prevent flue expanded by heating, be designed to corrugated flue 105, in order to ensure safety, after burner hearth, be provided with explosion proof door.

Utilize the process of flue gas cooling water purification flue gas as follows: the condenser 207 arranging in the flue of boiler top, what the pipe inlet of described condenser 207 was sent to is cooling soft water, utilize water pump to be extracted in condenser 207, in the spiral fin coil of cooling water in condenser 207, carry out heat exchange with the high-temperature flue gas in flue, cooling water temperature gets a promotion, during this period, moisture in flue gas becomes water in dew-point temperature, and in the pipe after intensification, cooling water turns back in water tank.The heating surface of condenser is mainly made up of high frequency welded fin-tube, and material is ND steel, and ND steel is widely used in and is manufactured on the condenser of being on active service in high sulfur-containing smoke gas, air preheater, the aspects such as heat exchanger and evaporimeter.This material has the characteristic of corrosion resistance, anti-chlorine ion corrosion.

Water in described energy-saving appliance 208 uses the hot water after condenser 207 heating, this thermal water utilization water pump is extracted into energy-saving appliance 208 from water tank, in energy-saving appliance, utilize flue gas again to the hot water heating in energy-saving appliance 208, water temperature is promoted, turn back in boiler, because the water in boiler has obtained heating through smoke pre-heating in energy-saving appliance 208, condenser 20, rise to the temperature that approaches boiling, through heating in return passage 100, convection bank 106, can form very soon saturated vapor.

Referring to the generalized section of Fig. 4 superheater, manufacturing process with regard to superheated steam describes: the superheater 200 arranging in described boiler, by entering, outlet header, coiled pipe 402 and bend pipe 403 form, from boiler saturated vapor outlet 301A saturated vapor out, enter superheater 200 by superheater 200 saturated vapor import 300A collectors, saturated vapor in serpentine coil carries out heat exchange with the coil pipe external heat flue gas entering from smoke inlet 305, saturated vapor in heating bend, form superheated steam, superheated steam exports 302 A collectors from superheated steam and delivers to client out, flue gas enters energy-saving appliance 208 from exhanst gas outlet 306 out, condenser 207 relayings continue the effect of bringing extra power into play.

Described condenser 207 has not only reduced exhaust gas temperature, has also got rid of the partial oxidation of water in water tank simultaneously, has improved boiler life; Save required fuel in boiler startup process, taking 1 ton of steam boiler as example, amount of consumed gas is 70.91Nm 3/ h, every each startup of boiler can be saved 5 × 70.91=354.55 Nm 3/ h fuel.

This soot condensing type superheated steam boiler has utilized the saturated vapor in boiler, has promoted vapor (steam) temperature, has become superheated steam; In condenser 207, take full advantage of the cooling water in fume afterheat and the condenser 207 in flue, brought into play condensation, purified the pernicious gas in flue gas, removed the moisture in flue gas; Utilize the waste heat in flue gas to promote water temperature in energy-saving appliance 208, saved energy consumption, can realize steam making within a short period of time.

Claims (4)

1. a soot condensing type superheated steam boiler, comprise the burner that arranges before burner hearth, burner hearth fuel combustion flue, boiler shell, be arranged on flowing bundle above burner hearth, connect flowing bundle and burner hearth end return combustion chamber, be positioned at boiler front upper part forehearth smoke box, be positioned at the flue at boiler top, it is characterized in that: in described soot condensing type superheated steam boiler, be equipped with superheater, condenser and energy-saving appliance.
2. a kind of soot condensing type superheated steam boiler according to claim 1, is characterized in that: described superheater serpentine coil forms, and saturated vapor import and superheated steam outlet arrange respectively two headers, and shell steam (vapor) outlet is connected with superheater import.
3. a kind of soot condensing type superheated steam boiler according to claim 1, is characterized in that: tube side one end of described energy-saving appliance is connected with softened water tank, and one end is connected with boiler in addition.
4. a kind of soot condensing type superheated steam boiler according to claim 1, is characterized in that: the heating surface of described condenser is mainly made up of high frequency welded fin-tube.
CN201320718932.0U 2013-11-15 2013-11-15 Flue gas condensation type superheated steam boiler CN203642143U (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
CN201320718932.0U CN203642143U (en) 2013-11-15 2013-11-15 Flue gas condensation type superheated steam boiler

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104154527A (en) * 2014-08-15 2014-11-19 浙江特富锅炉有限公司 High temperature superheater of steam boiler
CN104501397A (en) * 2014-11-25 2015-04-08 江苏四方锅炉有限公司 Membrane water-wall compound return water condensing type natural gas hot water boiler
CN104833089A (en) * 2015-05-28 2015-08-12 苏州斯洛莱自动化设备有限公司 Environment-friendly condensation micropressure phase change boiler

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104154527A (en) * 2014-08-15 2014-11-19 浙江特富锅炉有限公司 High temperature superheater of steam boiler
CN104501397A (en) * 2014-11-25 2015-04-08 江苏四方锅炉有限公司 Membrane water-wall compound return water condensing type natural gas hot water boiler
CN104501397B (en) * 2014-11-25 2017-12-15 江苏四方锅炉有限公司 A kind of compound backwater condensing natural gas hot water's boiler of fin panel casing
CN104833089A (en) * 2015-05-28 2015-08-12 苏州斯洛莱自动化设备有限公司 Environment-friendly condensation micropressure phase change boiler

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GR01 Patent grant
C14 Grant of patent or utility model
CP03 Change of name, title or address

Address after: 455000, Haihe Road, Wenfeng District, Henan, Anyang

Patentee after: FangKuai Boiler Co., Ltd.

Address before: 455000 east Haihe Road, Henan, Anyang

Patentee before: Anyang Fangkuai Boiler Co., Ltd.

C56 Change in the name or address of the patentee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140611

Termination date: 20161115

CF01 Termination of patent right due to non-payment of annual fee