CN208238567U - Low temperature waste gas and smoke from big gas duct residual heat using device - Google Patents

Abstract

The utility model relates to flue gas heat recovery technical fields, more particularly to low temperature waste gas and smoke from big gas duct residual heat using device, including sintering circular-cooler, sintering circular-cooler is divided into high-temperature region and low-temperature space from left to right, high-temperature region petticoat pipe and low-temperature space petticoat pipe are separately installed on high-temperature region and low-temperature space, high-temperature region petticoat pipe and low-temperature space petticoat pipe inner tip are respectively arranged with range hood, range hood top inside the petticoat pipe of high-temperature region is provided with high-temperature flue gas exhaust pipe, range hood top inside low-temperature space petticoat pipe is provided with low-temperature flue gas exhaust pipe, the utility model precise structure, it is easy to operate, intelligence degree is high, sintering waste heat utilization rate is high, reduce the waste of thermal energy, and what can be automated mixes high/low temperature flue gas, high/low temperature flue gas is utilized to reach simultaneously, has the function of intelligent screening high temperature and low-temperature flue gas, subtract The heating energy consumption of low-temperature flue gas re-using is lacked, there is very strong practicability.

Description

Low temperature waste gas and smoke from big gas duct residual heat using device

Technical field

The utility model relates to flue gas heat recovery technical fields, and in particular to more than low temperature waste gas and smoke from big gas duct Heat utilization device.

Background technique

Sintering is one of important procedure in steel manufacture process, provides raw material for blast furnace ironmaking, sintering process energy consumption is about The 9%-12% for accounting for entire total energy consumption of iron and steel enterprises, is only second to Iron-smelting.In sintering production process, there is nearly 50% thermal energy Atmosphere is discharged into the form of the sensible heat of sintering flue gas and cooling machine waste gas.From the high efficiency and economy angle for realizing energy cascade utilization Degree analysis, cogeneration is maximally efficient one of UTILIZATION OF VESIDUAL HEAT IN approach.Enter the cooling mineral temperature one of ring cold machine from sintering As be 700~800 DEG C, by air blower, the temperature after the ring cold machine high temperature sinter bed of material increases cold air, first three section of waste heat money Source has recoverable value: one section of wind-warm syndrome reaches 300~450 DEG C, two sections of wind-warm syndrome are generally 250~300 DEG C, three sections of wind-warm syndrome one As be 150 DEG C or so.In order to make full use of ring cold machine flue gas residual heat resources, using double discard heat boilers, three sections of flue gas recirculations It utilizes, improves boiler high temperature inlet flue-gas temperature, recycle flue gas waste heat sufficiently to generate steam.Sintering circular-cooler is using drum Wind formula is cooling, and every ring cold machine is equipped with five air blowers and cools down to it, institute's required airflow by the damper blade of air inlet duct into Row is adjusted, and throttle linkage mechanism is that torque is transmitted using sliding bearing, and disadvantage is to environmental requirement height, such as discontinuous fortune Turn to be easy corrosion.

Utility model content

In view of the deficiencies of the prior art, the utility model discloses low temperature waste gas and smoke from big gas duct residual heat using device, Air door discontinuous running for solving sintering circular-cooler air duct be easy to cause air door corrosion and sintering circular-cooler waste heat is not abundant The problem of utilization.

Specific technical solution is as follows:

Low temperature waste gas and smoke from big gas duct residual heat using device, including sintering circular-cooler, high-temperature region petticoat pipe, low-temperature space cigarette Cover, range hood, high-temperature flue gas exhaust pipe, flue gas control valve, low-temperature flue gas exhaust pipe, high-temperature flue gas gas-guide tube one, high-temperature flue gas Gas-guide tube two, air-introduced machine one, air-introduced machine two, waste heat boiler, low-temperature flue gas gas-guide tube, air-introduced machine three, communicating pipe one, flue gas collect Case one, temperature sensor one, connecting tube, smoke exhaust pipe one, air-introduced machine four, smoke exhaust pipe two, air-introduced machine five, communicating pipe two, flue gas converge Header two, temperature sensor two, conduction pipe, desorption tube, bellows and through-hole, the sintering circular-cooler are divided into height from left to right Warm area and low-temperature space are separately installed with the high-temperature region petticoat pipe and the low-temperature space petticoat pipe, institute on the high-temperature region and low-temperature space It states high-temperature region petticoat pipe and the low-temperature space petticoat pipe inner tip is respectively arranged with the range hood, inside the high-temperature region petticoat pipe Range hood top is provided with the high-temperature flue gas exhaust pipe, and the range hood top inside the low-temperature space petticoat pipe is provided with described low Warm flue gas exhaust pipe, high-temperature flue gas exhaust pipe top are provided with the flue gas control valve, on the low-temperature flue gas exhaust pipe It is provided with the flue gas control valve, is successively set from top to bottom on the high-temperature flue gas exhaust pipe in the lower section of the flue gas control valve It is equipped with the high-temperature flue gas gas-guide tube one and the high-temperature flue gas gas-guide tube two, is arranged on the high-temperature flue gas gas-guide tube one Air-introduced machine one is stated, the air-introduced machine two, one right end of high-temperature flue gas gas-guide tube are provided on the high-temperature flue gas gas-guide tube two It is connected with the waste heat boiler, is provided with the low temperature cigarette below the flue gas control valve on the low-temperature flue gas exhaust pipe Conductance tracheae, is provided with the air-introduced machine three on the low-temperature flue gas gas-guide tube, the high-temperature flue gas gas-guide tube two with it is described low Warm flue gas gas-guide tube is connected with the communicating pipe one, and the communicating pipe one is connected with the flue gas collector one, described Flue gas collector one is internally provided with the temperature sensor one, the flue gas collector one by the connecting tube with it is described remaining Heat boiler is connected, and the flue gas control valve is provided in the connecting tube, and one bottom end of flue gas collector is provided with described Smoke exhaust pipe one is provided with the air-introduced machine four on the smoke exhaust pipe one, and the waste heat boiler bottom end is provided with the smoke exhaust pipe two, Be provided with the air-introduced machine five on the smoke exhaust pipe two, the smoke exhaust pipe one and the smoke exhaust pipe two with the communicating pipe two-phase Connection, is connected the communicating pipe two, the flue gas collector two is internally provided with the temperature with the flue gas collector two Sensor two, the sintering circular-cooler bottom end are provided with the bellows, are provided between the bellows and the sintering circular-cooler The through-hole is provided with the conduction pipe, is arranged on the conduction pipe between the flue gas collector two and the bellows Flue gas control valve is stated, two left end of flue gas collector is provided with the desorption tube, flue gas control is provided on the desorption tube Valve；

Preferably, it is provided between the air-introduced machine one and the waste heat boiler on the high-temperature flue gas gas-guide tube one described Flue gas control valve；

Preferably, flue gas control is provided between the air-introduced machine four and the flue gas collector one on the smoke exhaust pipe one Valve；

Preferably, flue gas control valve is provided between the air-introduced machine five and the waste heat boiler on the smoke exhaust pipe two；

Preferably, the caliber of the high-temperature flue gas gas-guide tube one is greater than the caliber of the high-temperature flue gas gas-guide tube two.

The utility model has the advantages that

1, the utility model is provided with high-temperature flue gas gas-guide tube two and low-temperature flue gas gas-guide tube, high-temperature flue gas gas-guide tube two with Low-temperature flue gas gas-guide tube is connected with communicating pipe one, and communicating pipe one is connected with flue gas collector one, so that converging from high-temperature region The high-temperature flue gas entered mutually collects with the low-temperature flue gas imported from low-temperature space, to reach the flue-gas temperature for neutralizing and collecting, temperature is passed Flue-gas temperature after sensor a pair is converged is detected, and when temperature is more than preset value, the flue gas after converging will imported into waste heat In boiler, heat supply is carried out to waste heat boiler, when temperature is lower than preset value, the flue gas collected will be discharged from smoke exhaust pipe one, avoid The too low flue gas of temperature is imported into waste heat boiler, to influence the normal work of waste heat boiler, flue gas collector one is set It sets so that low-temperature flue gas can also be utilized effectively, increases flue gas utilization rate, the setting of temperature sensor one is so that intelligence The trend for changing control flue gas, effectively prevents low-temperature flue gas and is drained into waste heat boiler.

2, the utility model smoke exhaust pipe one and smoke exhaust pipe two are connected with communicating pipe two, communicating pipe two and flue gas collector Two are connected, so that the flue gas after temperature neutralizes imported out of smoke exhaust pipe one and the low-temperature flue gas being discharged out of waste heat boiler It blends, reaches temperature neutralization, mixed flue-gas temperature is detected by temperature sensor two, when temperature is lower than default When value, flue gas will be diffused through desorption tube, and when temperature is higher than preset value, flue gas will be passed into bellows through conduction pipe, so that burning Ring cold machine is tied when absorbing the flue gas, reduces the energy consumption of heating, to reach the recycling of flue gas, flue gas collector two is set It sets so that the low-temperature flue gas being discharged in waste heat boiler is mixed again with the flue gas after the neutralization of first time temperature, thus right Flue-gas temperature neutralizes again, so that the flue gas being discharged out of waste heat boiler while can be utilized effectively, temperature sensor two Setting so that intelligentized control method mixing after flue gas trend, effectively prevent the too low flue gas of temperature and imported into bellows, To further increase the energy consumption of sintering circular-cooler heating.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1: low temperature waste gas and smoke from big gas duct residual heat using device overall structure diagram.

Appended drawing reference is as follows: 1, sintering circular-cooler, 2, high-temperature region petticoat pipe, 3, low-temperature space petticoat pipe, 4, range hood, 5, high temperature cigarette Gas exhaust pipe, 6, flue gas control valve, 7, low-temperature flue gas exhaust pipe, 8, high-temperature flue gas gas-guide tube one, 9, high-temperature flue gas gas-guide tube two, 10, air-introduced machine one, 11, air-introduced machine two, 12, waste heat boiler, 13, low-temperature flue gas gas-guide tube, 14, air-introduced machine three, 15, communicating pipe One, 16, flue gas collector one, 17, temperature sensor one, 18, connecting tube, 19, smoke exhaust pipe one, 20, air-introduced machine four, 21, smoke evacuation Pipe two, 22, air-introduced machine five, 23, communicating pipe two, 24, flue gas collector two, 25, temperature sensor two, 26, conduction pipe, 27, put Separate tube, 28, bellows, 29, through-hole.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Referring to Fig. 1: low temperature waste gas and smoke from big gas duct residual heat using device, including sintering circular-cooler 1, sintering circular-cooler 1 It is divided into high-temperature region and low-temperature space from left to right, high-temperature region petticoat pipe 2 and low-temperature space are separately installed on high-temperature region and low-temperature space Petticoat pipe 3, high-temperature region petticoat pipe 2 and 3 inner tip of low-temperature space petticoat pipe are respectively arranged with range hood 4, the smoking inside high-temperature region petticoat pipe 2 It covers 4 tops and is provided with high-temperature flue gas exhaust pipe 5,4 top of range hood inside low-temperature space petticoat pipe 3 is provided with low-temperature flue gas exhaust pipe 7,5 top of high-temperature flue gas exhaust pipe is provided with flue gas control valve 6, and flue gas control valve 6 is provided on low-temperature flue gas exhaust pipe 7, high It is disposed with high-temperature flue gas gas-guide tube 1 and high temperature cigarette from top to bottom in the lower section of flue gas control valve 6 on warm flue gas exhaust pipe 5 Conductance tracheae 29 is provided with air-introduced machine 1 on high-temperature flue gas gas-guide tube 1, is provided with air inducing on high-temperature flue gas gas-guide tube 29 Machine 2 11, one 8 right end of high-temperature flue gas gas-guide tube is connected with waste heat boiler 12, in flue gas control valve 6 on low-temperature flue gas exhaust pipe 7 Lower section is provided with low-temperature flue gas gas-guide tube 13, and air-introduced machine 3 14, high-temperature flue gas gas-guide tube are provided on low-temperature flue gas gas-guide tube 13 29 are connected with communicating pipe 1 with low-temperature flue gas gas-guide tube 13, and communicating pipe 1 is connected with flue gas collector 1, cigarette Gas collector 1 is internally provided with temperature sensor 1, and flue gas collector 1 passes through connecting tube 18 and 12 phase of waste heat boiler It connects, is provided with flue gas control valve 6 in connecting tube 18, one 16 bottom end of flue gas collector is provided with smoke exhaust pipe 1, smoke exhaust pipe one Air-introduced machine 4 20 is provided on 19,12 bottom end of waste heat boiler is provided with smoke exhaust pipe 2 21, is provided with air-introduced machine on smoke exhaust pipe 2 21 5 22, smoke exhaust pipe 1 is connected with communicating pipe 2 23 with smoke exhaust pipe 2 21, communicating pipe 2 23 and 2 24 phase of flue gas collector Connection, flue gas collector 2 24 are internally provided with temperature sensor 2 25, and 1 bottom end of sintering circular-cooler is provided with bellows 28, bellows It is provided with through-hole 29 between 28 and sintering circular-cooler 1, conduction pipe 26 is provided between flue gas collector 2 24 and bellows 28, is connected Flue gas control valve 6 is provided on pipe 26,2 24 left end of flue gas collector is provided with desorption tube 27, is provided with flue gas on desorption tube 27 Control valve 6.

Specifically, flue gas control valve is provided on high-temperature flue gas gas-guide tube 1 between air-introduced machine 1 and waste heat boiler 12 6, be provided with flue gas control valve 6 on smoke exhaust pipe 1 between air-introduced machine 4 20 and flue gas collector 1, on smoke exhaust pipe 2 21 in Flue gas control valve 6 is provided between air-introduced machine 5 22 and waste heat boiler 12, the caliber of high-temperature flue gas gas-guide tube 1 is greater than high-temperature flue gas The caliber of gas-guide tube 29.

Working principle: it when the utility model is used, first closes on high-temperature flue gas exhaust pipe 5 and low-temperature flue gas exhaust pipe 7 Flue gas control valve 6, range hood 4 absorb flue gas, and the flue gas being discharged out of high-temperature flue gas exhaust pipe 5 is through high-temperature flue gas air guide The air-introduced machine 2 11 on air-introduced machine 1 and high-temperature flue gas gas-guide tube 29 on pipe 1 is directed respectively into waste heat boiler 12 and cigarette In gas collector 1, the flue gas being discharged out of low-temperature flue gas exhaust pipe 7 is through the air-introduced machine 3 14 on low-temperature flue gas gas-guide tube 13 It imported into flue gas collector 1, the mixed flue-gas temperature of one 17 pairs of temperature sensor in flue gas collector 1 carries out Detection, when temperature is more than preset value, the flue gas control valve 6 on smoke exhaust pipe 1 is closed, and flue gas will be imported by connecting tube 18 Into waste heat boiler 12, when temperature is lower than preset value, the flue gas control valve 6 in connecting tube 18 is closed, and flue gas discharges fume flow direction In pipe 1, the gas in boiler is heated as steam into the hot fume in waste heat boiler 12, steam can be used to generate electricity, The low-temperature flue gas in waste heat boiler 12 will imported into flue gas collector 2 24 with the air-introduced machine 5 22 on smoke exhaust pipe 2 21 later Interior, flue gas is imported into flue gas collector 2 24 through the air-introduced machine 4 20 on smoke exhaust pipe 1 after mixing for the first time, and temperature passes 2 25 pairs of mixed flue-gas temperatures of sensor detect, the flue gas when the temperature of detection is higher than preset value, on desorption tube 27 Control valve 6 is closed, and flue gas will be imported into bellows 28 by conduction pipe 26, is drained into sintering circular-cooler 1 by through-hole 29 later Interior, when temperature is lower than preset value, the flue gas control valve 6 on conduction pipe 26 is closed, and flue gas will be diffused out of desorption tube 27, works as burning After tying process, the flue gas control valve 6 on high-temperature flue gas exhaust pipe 5 and low-temperature flue gas exhaust pipe 7 is opened, flue gas will be from high temperature Discharge in flue gas exhaust pipe 5 and low-temperature flue gas exhaust pipe 7.

The utility model precise structure, easy to operate, intelligence degree is high, and sintering waste heat utilization rate is high, reduces thermal energy Waste, and what can be automated mixes high/low temperature flue gas, to reach simultaneously using high/low temperature flue gas, has intelligence High temperature and low-temperature flue gas function are screened, the heating energy consumption of low-temperature flue gas re-using is reduced, there is very strong practicability.

Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned reality Example is applied the utility model is described in detail, those skilled in the art should understand that: it still can be to preceding Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these It modifies or replaces, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution It encloses.

Claims (5)

1. low temperature waste gas and smoke from big gas duct residual heat using device, it is characterised in that: including sintering circular-cooler (1), high-temperature region cigarette Cover (2), low-temperature space petticoat pipe (3), range hood (4), high-temperature flue gas exhaust pipe (5), flue gas control valve (6), low-temperature flue gas exhaust pipe (7), high-temperature flue gas gas-guide tube one (8), high-temperature flue gas gas-guide tube two (9), air-introduced machine one (10), air-introduced machine two (11), waste heat pot Furnace (12), low-temperature flue gas gas-guide tube (13), air-introduced machine three (14), communicating pipe one (15), flue gas collector one (16), temperature sensing Device one (17), connecting tube (18), smoke exhaust pipe one (19), air-introduced machine four (20), smoke exhaust pipe two (21), air-introduced machine five (22), connection Pipe two (23), flue gas collector two (24), temperature sensor two (25), conduction pipe (26), desorption tube (27), bellows (28) and logical Hole (29), the sintering circular-cooler (1) are divided into high-temperature region and low-temperature space from left to right, divide on the high-temperature region and low-temperature space The high-temperature region petticoat pipe (2) and the low-temperature space petticoat pipe (3), the high-temperature region petticoat pipe (2) and the low-temperature space cigarette are not installed Cover (3) inner tip is respectively arranged with the range hood (4), internal range hood (4) the top setting of the high-temperature region petticoat pipe (2) There is the high-temperature flue gas exhaust pipe (5), internal range hood (4) top of the low-temperature space petticoat pipe (3) is provided with the low temperature cigarette Gas exhaust pipe (7), high-temperature flue gas exhaust pipe (5) top are provided with the flue gas control valve (6), the low-temperature flue gas exhaust It manages and is provided with the flue gas control valve (6) on (7), on the high-temperature flue gas exhaust pipe (5) under the flue gas control valve (6) Side is disposed with the high-temperature flue gas gas-guide tube one (8) and the high-temperature flue gas gas-guide tube two (9), the high temperature from top to bottom It is provided with the air-introduced machine one (10) on flue gas gas-guide tube one (8), described draw is provided on the high-temperature flue gas gas-guide tube two (9) Blower two (11), high-temperature flue gas gas-guide tube one (8) right end are connected with the waste heat boiler (12), the low-temperature flue gas row The low-temperature flue gas gas-guide tube (13), the low-temperature flue gas air guide are provided with below the flue gas control valve (6) on tracheae (7) The air-introduced machine three (14), the high-temperature flue gas gas-guide tube two (9) and the low-temperature flue gas gas-guide tube are provided on pipe (13) (13) it is connected with the communicating pipe one (15), the communicating pipe one (15) is connected with the flue gas collector one (16), The flue gas collector one (16) is internally provided with the temperature sensor one (17), and the flue gas collector one (16) passes through institute It states connecting tube (18) to be connected with the waste heat boiler (12), the flue gas control valve (6) is provided on the connecting tube (18), Flue gas collector one (16) bottom end is provided with the smoke exhaust pipe one (19), and described draw is provided on the smoke exhaust pipe one (19) Blower four (20), waste heat boiler (12) bottom end are provided with the smoke exhaust pipe two (21), are arranged on the smoke exhaust pipe two (21) There is the air-introduced machine five (22), the smoke exhaust pipe one (19) is connected with the communicating pipe two (23) with the smoke exhaust pipe two (21) Logical, the communicating pipe two (23) is connected with the flue gas collector two (24), setting inside the flue gas collector two (24) Have the temperature sensor two (25), sintering circular-cooler (1) bottom end is provided with the bellows (28), the bellows (28) with Be provided with the through-hole (29) between the sintering circular-cooler (1), the flue gas collector two (24) and the bellows (28) it Between be provided with the conduction pipe (26), the flue gas control valve (6), the flue gas collector are provided on the conduction pipe (26) Two (24) left ends are provided with the desorption tube (27), are provided with flue gas control valve (6) on the desorption tube (27).

2. low temperature waste gas according to claim 1 and smoke from big gas duct residual heat using device, it is characterised in that: the high temperature The flue gas control valve is provided on flue gas gas-guide tube one (8) between the air-introduced machine one (10) and the waste heat boiler (12) (6).

3. low temperature waste gas according to claim 1 and smoke from big gas duct residual heat using device, it is characterised in that: the smoke evacuation It is provided between the air-introduced machine four (20) and the flue gas collector one (16) on pipe one (19) flue gas control valve (6).

4. low temperature waste gas according to claim 1 and smoke from big gas duct residual heat using device, it is characterised in that: the smoke evacuation It is provided between the air-introduced machine five (22) and the waste heat boiler (12) on pipe two (21) flue gas control valve (6).

5. low temperature waste gas according to claim 1 and smoke from big gas duct residual heat using device, it is characterised in that: the high temperature The caliber of flue gas gas-guide tube one (8) is greater than the caliber of the high-temperature flue gas gas-guide tube two (9).