CN201753263U - Hydrogen sulfide oxygen-enriched air incinerator - Google Patents

Abstract

A hydrogen sulfide oxygen-enriched air incinerator belongs to the environmental protection technical field of the atmospheric pollutant prevention and control. The utility model comprises an incinerator body, a mixing burner, a hydrogen sulfide inlet, a primary air inlet, a boiler water feeding inlet, a secondary air inlet, a boiler water feeding outlet and an incinerator air outlet etc. By arranging twice combustion in oxygen-enriched air, the utility model makes the first combustion incomplete to partially restrain the heat release and the second combustion in sufficient oxygen-enriched air to completely oxidize the hydrogen sulfide, the ammonia and the hydrocarbons etc. in the air into sulfur dioxide, nitrogen, carbon dioxide and water. By injecting the secondary air, the utility model accelerates the air mixture and facilitates the air combusting reaction. By equipping the cooling water pipe, the heat is continuously moved out of the incinerator thus the firebricks are protected from damages due to over temperature. The incinerator air outlet which is equipped in the tail end of the incinerator can be directly connected with the subsequent waste heat boiler inlet to reduce high-temperature tubes as well as the matching insulation properties and increases the recovery amount of waste heat.

Description

A kind of hydrogen sulfide oxygen-rich air incinerator

Technical field: the utility model belongs to the technical field of atmospheric polluting material control in the environment protection, is specifically related to hydrogen sulfide oxygen-rich air incinerator.

Background technology: in existing hydrogen sulfide dry method acid-making process, generally adopt normal air as ignition dope and oxygenant and hydrogen sulfide in the incinerator internal combustion, the hydrogen sulfide in the gas and ammonia, hydro carbons etc. are oxidized to sulfurous gas, nitrogen, carbonic acid gas and water.Utilize normal air to keep combustion processes and bring some problem.Owing in combustion processes, rare gas element contained in the air (mainly being nitrogen) also must be heated to temperature of combustion, a large amount of heat energy that these rare gas elementes carry move in follow-up purification system in the water coolant and are difficult to recycle, thereby cause sulfuric acid apparatus pick up the heat rate on the low side; Add the rare gas element that a large amount of water vapour of generation, air are brought in the hydrogen sulfide burning process, the gas flux of sulfuric acid apparatus is very big, and the hydrogen sulfide incinerator is too huge.Have the rate of combustion of quickening, impel fuel perfect combustion, reduce plurality of advantages such as burning final vacuum amount and raising heat energy recycle efficient with oxygenized air combustion supporting.Yet, replace ordinary air combustion can cause flame temperature to raise with oxygen-rich air, make to produce too high temperature in the hydrogen sulfide incinerator, cause the stove inner lining refractory block to damage easily.Therefore be difficult to satisfy the requirement of oxygen-rich air relieving haperacidity with existing incinerator.

Summary of the invention: the purpose of this utility model is to overcome the deficiencies in the prior art, structure by changing the hydrogen sulfide incinerator, mode such as water-cooled tube is set sulfureted hydrogen burning heat is in time shifted out incinerator, in order to avoid the stove overtemperature, and guarantee the hydrogen sulfide burning fully.

Incinerator of the present utility model comprises mixing burner, at least one wind inlet, at least one secondary air import, at least one hydrogen sulfide import, at least one oiler feed outlet, at least one furnace gas export, at least one oiler feed outlet and water-cooled tube layer of at least one body of heater, the inside and outside chuck of at least one band; The incinerator body of heater is external thermal insulation, steel shell, thermofin, flame retardant coating, water-cooled tube from outside to inside successively; Body of heater also is provided with secondary air import, oiler feed outlet and furnace gas export; The burner place of incinerator is provided with mixing burner, and mixing burner is two-layer jacket structured, is provided with oiler feed import, hydrogen sulfide import, fire monitor equipment, wind inlet and burner.

Usually, incinerator described in the utility model adopts horizontal round shape box hat inner lining refractory block structure, described body of heater is followed successively by external thermal insulation, outer steel shell, thermofin, flame retardant coating and water-cooled tube layer from outside to inside, and described body of heater is pressed the import of circumference uniform distribution secondary air, oiler feed outlet and a furnace gas export.

Described mixing burner has hydrogen sulfide and a wind pre-mixing, burning concurrently, and the effect of oiler feed conveying, hydrogen sulfide and a wind are sent into chuck in the described mixing burner by a certain percentage, spray in the described incinerator from burner after the pre-mixing incomplete combustion takes place, oiler feed enters described incinerator internal cooling water pipe layer by described mixing burner external jacket.

Described water-cooled tube is by circle distribution, and its pipe is axially axially consistent with incinerator, and main air stream vertically skims over the water-cooled tube layer; The water-cooled tube two ends are provided with water-cooled tube water inlet pipeloop and water outlet pipeloop, and oiler feed is isolated in outside the furnace gas, adopt special high temperature alloy material to make with the water-cooled tube that high-temperature furnace gas directly contacts.

The body of heater postmedian of described incinerator is provided with four secondary air imports and air nozzle, circumferential direction uniform distribution in body of heater is pressed in four described secondary air imports, each one of upper and lower, left and right, in order to impel in the incinerator sulfureted hydrogen burning more complete, four air nozzles with less angle towards burner, the sufficient oxygen enrichment of described air nozzle ejection contacts with described burning furnace high-temperature main air stream, makes main air stream generation disturbance, impels combustion reactions.

The body of heater afterbody of described incinerator is provided with four oiler feed outlets, circumferential direction uniform distribution in body of heater is pressed in four described oiler feed outlets, each one of upper and lower, left and right, directly link to each other with water-cooled tube water outlet pipeloop, the steam water interface that produces in the described water-cooled tube flows in the water-cooled tube water outlet pipeloop, leave incinerator fast by four direction again, described oiler feed outlet directly links to each other with follow-up waste heat boiler drum steam guiding tube.

The furnace gas export of described incinerator is arranged on the stove tail end, and described furnace gas export directly links to each other with follow-up waste heat boiler inlet pipe, reduces high temperature pipe and lagging facility.

The utility model changes an existing air inlet horizontal round shape box hat inner lining refractory block incinerator into twice air inlet horizontal round shape box hat inner lining refractory block and water-cooled tube incinerator, and stove tail side direction given vent to anger changes the stove tail into and directly give vent to anger.Advance the oxygen-rich air burning owing to be provided with twice, make incomplete combustion for the first time, suppress heat energy with part and discharge, feed competent oxygen-rich air burning for the second time, being sulfurous gas, nitrogen, carbonic acid gas and water complete oxidations such as the hydrogen sulfide in the gas and ammonia, hydro carbons; Spray into secondary air by certain angle, accelerated the gas mixing, promoted the gaseous combustion reaction.By water-cooled tube is set, utilize oiler feed that the heat of hydrogen sulfide combustion processes is continuously shifted out incinerator, with protection refractory brick not overtemperature damage.Furnace gas export is arranged on the stove tail end, outlet directly directly can be linked to each other with follow-up waste heat boiler import, to reduce high temperature pipe and supporting insulation, improves the waste heat recovery amount.

The utlity model has following advantage:

(a) send into an oxygen-rich air (claiming a time wind) and hydrogen sulfide in the incinerator together by at least one mixing burner on incinerator one end (the being burner) wall, control the throughput ratio of described hydrogen sulfide and a described wind, so that the hypoxgia that a described wind provides is so that described hydrogen sulfide perfect combustion, thereby reach the inhibition combustion reactions, avoid heat too concentrated at burner.

(b) by at least one oxygen-rich air spray gun secondary oxygen-rich air (title secondary air) is sprayed in the described incinerator,, be enough to make the required oxygen of described hydrogen sulfide perfect combustion thereby provide so that replenish general mood stream one time; Overfire air jet sprays into oxygen-rich air in the main air stream at a certain angle, to impel main air stream generation disturbance, strengthens gas and mixes contact, guarantees that burning fully.

(c) oiler feed that comes from the waste heat boiler drum is sent into the water-cooled tube that is provided with in the described incinerator by described mixing burner external jacket, and described incinerator is flowed out with at least one oiler feed outlet in the stove of the form of steam water interface in the oiler feed back that is heated.By setting water-cooled tube quantity and boiler feed temperature, flow, the incinerator service temperature is controlled in 800～1200 ℃ of (especially at 1000～1100 ℃) scopes.

(d) described water-cooled tube is by circle distribution, and its pipe is axially axially consistent with incinerator, and main air stream vertically skims over the water-cooled tube layer.

(e) finish hydrogen sulfide combustion ignition and flame monitoring by portfire and fire monitor equipment.

(f) furnace gas export on the described incinerator the other end (the being the stove tail) wall directly links to each other with described waste heat boiler import, and the high-temperature furnace gas that incinerator comes out enters described waste heat boiler tube side, has reduced high temperature pipe and supporting lagging facility.

Description of drawings: Fig. 1 is the utility model example structure simplified schematic diagram; Fig. 2 is the utility model example structure left view simplified schematic diagram; Fig. 3 is the utility model example structure A-A section simplified schematic diagram.

In the accompanying drawing, the 1-mixing burner; 2-oiler feed import; The import of 3-hydrogen sulfide; The 4-fire monitor equipment; Wind inlet of 5-; 6-mixing burner external jacket (logical oiler feed); 7-water-cooled tube water inlet circle; The 8-external thermal insulation; The 9-thermofin; The 10-flame retardant coating; The 11-water-cooled tube; The 12-outer steel shell; The import of 13-secondary air; The 14-air nozzle; 15-oiler feed outlet; The 16-water-cooled tube goes out hydrosphere; The 17-furnace gas export; The 18-burner.

Embodiment: the utility model is described in detail below in conjunction with drawings and Examples.

Present embodiment such as Fig. 1, Fig. 2 and shown in Figure 3.Incinerator is external thermal insulation 8, steel shell 12, thermofin (cement floats the high aluminum foam aggregate of pearl material) 9, flame retardant coating (combustion zone high alumina corundum brick or composite phosphate corundum high strength ramming mass in burner and the stove from outside to inside successively, other is with composite phosphate high alumina matter ramming mass) 10, water-cooled tube (with high-temperature nickel-base alloy or CrMoV high-temperature steel material) 11, body of heater also is provided with four secondary air imports 13, four 15 and furnace gas exports 17 of oiler feed outlet.Mixing burner 1 is two-layer jacket structured, is provided with oiler feed import 2, hydrogen sulfide import 3, fire monitor equipment 4, a wind inlet 5 and a burner 18.Hydrogen sulfide and oxygen-rich air are entered mixing burner 1 respectively by a hydrogen sulfide import 3 and an oxygen-rich air import 5 interior chuck pre-mixing, spray into the stove internal combustion by burner 18 again, the high-temperature furnace gas that burning generates is moving along sea line towards the stove wake flow, spray into a certain amount of oxygen-rich air from four equally distributed secondary air imports 13 of stove postmedian, secondary air contacts with the high-temperature furnace gas main air stream is reverse with minute angle, make main air stream generation disturbance, to impel the air-flow hybrid reaction, furnace gas after the secondary combustion is drawn incinerator from furnace gas export 17, enters follow-up waste heat boiler tube side and continues to reclaim heat energy; Enter the external jacket of mixing burner 1 by oiler feed import 2 from the next oiler feed of follow-up waste heat boiler drum, flow in the water-cooled tube 11 that distributes along the stove inner ring through pipeline again, oiler feed is heated in water-cooled tube 11 after stove tail water-cooled tube goes out equally distributed four oiler feeds outlet, 15 outflow incinerators on the hydrosphere 16, and service temperature is at 800～1200 ℃ in the control stove; Oiler feed outlet 15 steam water interfaces that come out return the waste heat boiler drum by at least one steam guiding tube and reclaim heat energy.

Claims (6)

1. a hydrogen sulfide oxygen-rich air incinerator is characterized in that described incinerator comprises: the mixing burner of at least one body of heater, the inside and outside chuck of at least one band, at least one wind inlet, at least one secondary air import, at least one hydrogen sulfide import, at least one oiler feed outlet, at least one furnace gas export, at least one oiler feed outlet and a water-cooled tube layer; The incinerator body of heater is external thermal insulation, steel shell, thermofin, flame retardant coating, water-cooled tube from outside to inside successively; Body of heater also is provided with secondary air import, oiler feed outlet and furnace gas export; The burner place of incinerator is provided with mixing burner, and mixing burner is two-layer jacket structured, is provided with oiler feed import, hydrogen sulfide import, fire monitor equipment, wind inlet and burner.

2. incinerator according to claim 1 is characterized in that described incinerator adopts horizontal round shape box hat inner lining refractory block structure, and body of heater is pressed the import of circumference uniform distribution secondary air, oiler feed outlet and furnace gas export.

3. incinerator according to claim 1 is characterized in that water-cooled tube by circle distribution, and its pipe is axially axially consistent with incinerator; The water-cooled tube two ends are provided with water-cooled tube water inlet pipeloop and water outlet pipeloop.

4. incinerator according to claim 1 and 2, it is characterized in that four secondary air imports and four being set with the air nozzle of less angle towards burner at the body of heater postmedian, circumferential direction uniform distribution in body of heater is pressed in four described secondary air imports, each one of upper and lower, left and right.

5. according to claim 1,2 or 3 described incinerators, it is characterized in that four oiler feed outlets being set at the body of heater afterbody, circumferential direction uniform distribution in body of heater is pressed in four described oiler feed outlets, and each one of upper and lower, left and right directly link to each other with water-cooled tube water outlet pipeloop.

6. incinerator according to claim 1 and 2 is characterized in that described furnace gas export is arranged on the stove tail end.

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