CN201103894Y

CN201103894Y - Saturated steam heating stove

Info

Publication number: CN201103894Y
Application number: CNU2007201382032U
Authority: CN
Inventors: 安庆林
Original assignee: 安庆林
Current assignee: China Huaye Group Co Ltd
Priority date: 2007-12-04
Filing date: 2007-12-04
Publication date: 2008-08-20
Anticipated expiration: 2017-12-04

Abstract

The utility model relates to a saturated steam heating furnace, which comprises a blower, a boiler burner, a furnace, a saturated steam inlet collecting header, a super heater, a super heating steam outlet collecting header, a safety valve, a water supply inlet collecting header, a coal economizer, a water supply outlet collecting header, an air pre-heater and an induced draft fan. The utility model is characterized in that: 1) saturated steam instead of water is directly adopted as the heat medium of the saturated steam heating furnace; 2) blast furnace gas, converter gas or coke oven gas is used for heating the saturated steam into super heated steam with high heat energy with the help of the independent steam heating furnace for generating electricity; 3) the coal economizer adopts the condensation water of a steam turbine as water supply; 4) the heating furnace adopts a reliable and perfect automatic instrument operating and controlling system. Compared with the efficiency of traditional power stations with medium temperature and medium pressure, the boiler has the advantages of improving the efficiency by 140 percent, and compared with 45 to 50 percent of the power generating efficiency of the gas turbine with the highest efficiency in the world, the boiler improves the power generating efficiency by more than at least 20 percent.

Description

The saturated vapor heating furnace

One, technical field:

The utility model relates to a kind of heating furnace, particularly a kind of saturated vapor heating furnace.

Two, background technology:

Iron and steel enterprise is the energy consumption rich and influential family in the industrial development at present, and the reducing energy consumption of these enterprises just exists very big latent space.Especially account for sizable ratio of iron and steel total output in private and iron and steel enterprise collective, and production technology, equipment equipment that these enterprises often adopt are relatively backward, and be very big in the space energy-saving and cost-reducing, that reduce environmental pollution of each production link.These enterprises are to energy-saving and emission-reduction, and cleaner production is paid much attention to.Wherein be used to cool off the steam of exhaust gas temperature for steel plant's converter and other steel-making, steel rolling, because pressure, flowed fluctuation are very big, can't be utilized, be used as waste vapour and be discharged in the air except that minority is utilized majority, both cause the waste of water resource, and followed water vapour also to take away a large amount of heats again.Utilization to this energy at present is mainly the following aspects: 1 utilizes the saturated vapor of these fluctuations, is used as the winter heating thermal source, but because often steel plant are away from the city, the saturated vapor long distance of inconvenience is again carried, and only is used for heating with the vapour consumption seldom.So most still based on discharging, utilization rate is very low; 2 minorities can be used to life and use vapour, and such as dining room vapour, publilc baths is with vapour etc., and these consumptions are also considerably less; Availability is also very low; 3 utilize saturated vapor to generate electricity and since saturated vapor when being used to generate electricity utilization rate very low, about 14 ~ 15kg 1kW.h that can generate electricity, the main cause that the saturated vapor utilization rate is low, be because the energy that can convert electric energy to that saturated vapor possessed is very low, so energy utilization rate is also lower; 4 utilize saturated vapor to mix with the saturated vapor that other boilers produce, and send back to boiler again and carry out heat treatment again, and the steam after the heat is delivered to steam turbine power generation again, but need possess other boilers are arranged, investment cost is higher relatively, and service condition is restricted, and popularity rate is not high; 5 build additional combustion boiler, promptly need to have steam boiler, mend the saturated vapor of going into to collect then and carry out Overheating Treatment together, steam after overheated is delivered to the Steam Turbine generating again, and also needing to possess has other boilers, and investment cost is higher relatively, service condition is restricted, so popularity rate is not high yet.

Three, summary of the invention:

The purpose of this utility model is a kind of saturated vapor heating furnace of invention, the saturated vapor that this saturated vapor heating furnace utilizes steel plant's converter or other waste heat boilers to produce, after the big saturated vapor process of flow, the pressure oscillation filtering voltage regulation processing of collecting, adopt this saturated vapor heating furnace further to heat, make it become superheated steam, improve the energy quality of steam, improved the acting ability of steam greatly.Primary Calculation, if saturated vapor heats and do not heat when being used to generate electricity equally through this stove, the former improves acting ability 137% than the latter, in other words, if the 100t/h saturated vapor is arranged, generating capacity is respectively 7150kW and 16950kW before and after the heating.And the utilization rate that is used to heat the heat that is consumed can reach more than 60%, improves 140% than traditional medium temperature and medium pressure efficiency of plant, and is more taller at least more than 20% than most effective in the world gas turbine power generation efficient 45～50%.

The purpose of this utility model can reach by following embodiment: this saturated vapor heating furnace includes by pressure fan, heating furnace burner burner hearth, saturated vapor inlet header case, superheater, superheated steam outlet collection case, safety valve, feed-water inlet collection case, economizer, to water out collection case, air preheater and air-introduced machine.It is characterized in that the energy transitive relation is the saturated vapor inlet header case that enters heating furnace top from the saturated vapor of steel plant, being heated by superheater becomes superheated steam, and then is sent to steam turbine power generation through superheated steam outlet collection case; The thermal source of heating furnace adopts blast furnace or coal gas of converter, coal gas enters heating furnace burner and the pressure fan hot-air after through the air preheater heating by pipeline and is mixed and enters the burning of heating furnace burner hearth, gas fume after burning is except that heating steam, higher temperature is still arranged, continue by the economizer heated feed water, the heating furnace feedwater feeds economizer by the inlet header case, and the feedwater after being heated is again by sending into therrmodynamic system to water out collection case; Flue gas of heating furnace is by behind the economizer, temperature further descends, this flue gas is further lowered the temperature by air preheater again, cold air is by behind the air preheater simultaneously, and temperature raises, and at this moment is incorporated into heating furnace, fully improved energy utilization ratio, last flue gas is reduced to the acceptable degree of air-introduced machine, extracts out by air-introduced machine and enters chimney, is discharged in the atmosphere then.

Advantage of the present utility model is: 1) saturated vapor heating furnace thermal medium directly adopts saturated vapor rather than water; 2) adopt independently steam pipe oven,, also can adopt coke-stove gas that saturated vapor is heated as the higher superheated steam of heat energy, be used for generating electricity with blast furnace or coal gas of converter; 3) economizer adopts the condensate water of steam turbine as feedwater; 4) reliable, perfect instrument and meter for automation operation and control system.This stove has been given full play to the utilizable saturated vapor that the existing means of production of steel plant exists, make the steam that is used as the exhaust steam discharging collect recycling, can improve the utilization rate of heat energy greatly, for enterprise reduces water resource waste, also reduced the thermal pollution that increases owing to the exhaust steam discharging simultaneously.Improve 140% than traditional medium temperature and medium pressure efficiency of plant, more taller at least more than 20% than most effective in the world gas turbine power generation efficient 45～50%.

Four, description of drawings:

Fig. 1 is a structural representation.

Five, the specific embodiment:

As shown in Figure 1, this saturated vapor heating furnace includes by pressure fan 1, heating furnace burner 2 burner hearths 3, saturated vapor inlet header case 4, superheater 5, superheated steam outlet collection case 6, safety valve 7, feed-water inlet collection case 8, economizer 9, to water out collection case 10, air preheater 11 and air-introduced machine 12.It is characterized in that the energy transitive relation is the saturated vapor inlet header case 4 that enters heating furnace 3 tops from the saturated vapor of steel plant, being heated by superheater 5 becomes superheated steam, and then is sent to steam turbine power generation through superheated steam outlet collection case 6; The thermal source of heating furnace adopts blast furnace or coal gas of converter, coal gas enters heating furnace burner 2 and the pressure fan hot-air after through air preheater 11 heating by pipeline and is mixed and enters 3 burnings of heating furnace burner hearth, gas fume after burning is except that heating steam, higher temperature is still arranged, continue by economizer 9 heated feed waters, the heating furnace feedwater feeds economizer 9 by inlet header case 8, and the feedwater after being heated is again by sending into therrmodynamic system to water out collection case 10; Flue gas of heating furnace is by behind the economizer 9, temperature further descends, this flue gas is further lowered the temperature by air preheater 11 again, cold air is by behind the air preheater 11 simultaneously, and temperature raises, and at this moment is incorporated into heating furnace, fully improved energy utilization ratio, last flue gas is reduced to air-introduced machine 12 acceptable degree, extracts out by air-introduced machine 12 and enters chimney 13, is discharged in the atmosphere then.

Claims

1, a kind of saturated vapor heating furnace includes by pressure fan (1), heating furnace burner (2), heating furnace burner hearth (3), saturated vapor inlet header case (4), superheater (5), superheated steam outlet collection case (6), safety valve (7), feed-water inlet collection case (8), economizer (9), to water out collection case (10), air preheater (11) and air-introduced machine (12).Heating furnace burner (2) is positioned at heating furnace burner hearth bottom, combustion gas and air are by the mixed combustion of heating furnace burner, heat enters burner hearth, superheater (5) is positioned at the horizontal flue on upper furnace or top, economizer (9) is positioned at the top of heating furnace rear portion vertical heating flue, air preheater (11) is positioned at heating furnace rear portion vertical heating flue economizer (9) bottom, it is characterized in that the energy transitive relation is the saturated vapor inlet header case (4) that enters heating furnace burner hearth (3) top from the saturated vapor of steel plant, being heated by superheater (5) becomes superheated steam, and then is sent to steam turbine power generation through superheated steam outlet collection case (6); The thermal source of heating furnace adopts blast furnace or coal gas of converter, coal gas enters heating furnace burner (2) and pressure fan process air preheater (11) by pipeline, hot-air after the heating is mixed and enters heating furnace burner hearth (3) burning, gas fume after burning is except that heating steam, higher temperature is still arranged, continue by economizer (9) heated feed water, the heating furnace feedwater feeds economizer (9) by inlet header case (8), and the feedwater after being heated is again by sending into therrmodynamic system to water out collection case (10); Flue gas of heating furnace is by behind the economizer (9), temperature further descends, this flue gas is again by further cooling of air preheater (11), cold air raises by air preheater (11) back temperature simultaneously, at this moment be incorporated into heating furnace, fully improve energy utilization ratio, last flue gas is reduced to the acceptable degree of air-introduced machine (12), extract out by air-introduced machine (12) again and enter chimney (13), be discharged in the atmosphere then.