CN2160854Y

CN2160854Y - Vertical hot-blast stove using heavy residual stocks

Info

Publication number: CN2160854Y
Application number: CN 92227582
Authority: CN
Inventors: 薛淑贤
Original assignee: Beijing No2 Daily-Use Chemical Factory
Current assignee: Beijing No2 Daily-Use Chemical Factory
Priority date: 1992-07-16
Filing date: 1992-07-16
Publication date: 1994-04-06
Anticipated expiration: 2002-07-16

Abstract

The utility model provides a vertical hot-blast stove using heavy residual stock, being composed of a combustion chamber, a mixing chamber, a secondary air chamber and a chimney. The utility model is characterized in that an air seal baffle ring is arranged in the mixing chamber, the high-pressure blast is blown out from a deflection tube horizontally and centripetally to form a powerful air seal plane, and the carbon black burned incompletely is turned back into the combustion chamber to carry out the secondary combustion. The utility model saves the energy because of the burning of the heavy residual stock and can be used in the hot-blast drying of the white products, so the utility model obtains the economic effect that the production of the washing powder adopts the heavy residual stock.

Description

Vertical hot-blast stove using heavy residual stocks

It is the industrial combustion furnace of fuel with heavy residual oil that the utility model provides a kind of, belongs to the industrial combustion equipment field.

At present, China is used for the warm air oil furnace of washing powder spray drying forming production technology, is fuel with diesel oil or crude oil all.Tianjin synthetic detergent factory introduces gondola vertical warm air oil furnace, is that " light oil " is to guarantee product quality to the fuel strict regulations.China's " light oil " output is limited, and price is high again, is difficult to use in production.Yet there is a large amount of heavy residual oil in China, as 3 of Beijing Yanshan Petrochemical head factory ^#(standard No.: Q/SH 001-D01-87) be end cuts in the Petroleum refining, its centistoke kinematic viscosity (100 ℃) is 330 to heavy residual oil, and viscosity is big, is difficult for gasification, is the residue oil of lowest quality.Existing warm air oil furnace can not use heavy residual oil, otherwise can be because of incomplete combustion, and residual " carbon black " brought in the white washing powder by hot blast and polluted.

The purpose of this utility model is to design a kind of warm air oil furnace, is fuel with heavy residual oil, and it is burnt cmpletely, solves the problem that " carbon black " influences product quality, both can make full use of heavy residual oil energy savings, can reduce production costs again.

Invention essence of the present utility model is that the existing vertical warm air oil furnace of being made up of combustion chamber (1), secondary air chamber (2), mixing chamber (3) and chimney (4) is made 2 improvement on structure Design.One: in mixing chamber, near top of combustion chamber a sealing gland baffle ring (6) is installed, as shown in Figure 1.This baffle ring is made up of endless tube (7), nipple (9), guide pipe (8) and inlet scoop (10), as shown in Figure 2.Endless tube (7) inwall entad horizontal direction equidistantly connect several nipples (9), nipple connects guide pipe (8) again, opens an inlet scoop (10) at endless tube (7) outer wall.The effect of this sealing gland baffle ring (6) is: when a cold wind high pressure is blown into inlet scoop (10), evenly entad blow out by array guide pipe (8), form strong sealing gland plane, " carbon black " that unburned is complete and residual directly keeps off go back to the combustion chamber, capable again second-time burning, until its burning fully.Its two: adorn a sealed heat-resisting butterfly valve (11) in chimney (4) below and be connected to Strok mechanism (12).When igniting, butterfly valve is opened, treat that cigarette ash is discharged from chimney after, butterfly valve cuts out automatically, in case stop fire moment, cigarette ash influences the hot blast quality and polluted product.

Advantage of the present utility model and result of use:

Because the improvement on the structural design, the utility model can be a fuel with heavy residual oil, has changed can not the burn situation of heavy residual oil of existing warm air oil furnace, not only can make its burning fully but also can produce high-quality hot blast, can be used for drying white product.

Result of use of the present utility model: daily use chemicals two factories in Beijing have used it to substitute the coal gas hot-blast stove of high energy consumption, with black, difficult burning, cheap heavy residual oil is fuel, produce high-quality hot blast and be used to produce per year 50,000 tons washing powder spray drying forming technology, produce up-to-standard, whiteness and reach 95.78 washing powder (the criterion of acceptability whiteness is 85), for China's washing powder industry is created an energy-conservation road, this year of reform creates benefit and reaches more than 1,380,000 yuan.

Now accompanying drawing is described further:

Fig. 1 is the heavy residual oil hot-blast stove of vertical combustion overall structure figure.

Fig. 2 is the heavy residual oil hot-blast stove of a vertical combustion sealing gland baffle ring structure chart.

Fig. 3 is the heat-resisting butterfly valve structure figure of the heavy residual oil hot-blast stove of vertical combustion.

Fig. 4 is the heavy residual oil hot-blast stove gas burner of a vertical combustion structure chart.

Fig. 5 is the heavy residual oil hot-blast stove of vertical combustion air feed system figure.

Below in conjunction with accompanying drawing for an embodiment: the heavy residual oil hot-blast stove of the vertical combustion of 2300KJ/h

One vertical type cylinder shape combustion chamber (1), internal diameter φ 1500mm, clay casting that thick 230mm is high temperature resistant.A ZH400H type burner (5), its fuel consumption 400kg/h are installed in the bottom.As shown in Figure 4, it is by air duct (16), oil gun (17) is formed, one time high-pressure blast enters in the air duct (16) with two rotating wind wheels and porous distribution plate from interface (18), regulate centring ring (21) and bolt (22), make the heavy residual oil that enters by oil-in (19) become little oil droplet through the atomizing piece mechanical atomization, comparatively complete by igniter (20) ignition combustion.Around the secondary air chamber that wide 230mm passage is arranged outside the combustion chamber (2).Four 400 * 700mm inlet scoops (a) tangent line enters along Zhou Junbu.One cone barrel mixing chamber (3) is contained in top of combustion chamber hot-blast outlet and secondary air chamber outlet meet, in mixing chamber, enclose sealing gland baffle ring (6) apart from top of combustion chamber 160mm place device one, baffle ring curves φ 3560mm endless tube (7) by φ 159mm * 4 seamless steel pipes, at endless tube inwall entad level uniform connection five groups of φ 38 * 3mm seamless steel pipe guide pipe (8) and nipple (9).The endless tube outer wall leaves the inlet scoop (10) of a φ 108mm.High pressure cold wind is blown into from the inlet scoop, entad blows out by five groups of guide pipe equilibriums and forms strong sealing gland plane, the unburned direct combustion chamber that keeps off back of hydrocarbon completely of will coming out from the combustion chamber, capable again second-time burning.φ 800mm chimney (4) is installed on mixing chamber top, the chimney below dress heat-resisting butterfly valve of φ 800mm (11), and 90 ° of Strok mechanisms (12) are controlled to be automatically and prevent that ignition point cigarette ash from entering polluted product in the drying plant with hot blast.As shown in Figure 3, heat-resisting butterfly valve (11) is made up of valve seat (13), spool (14) and quill (15).Chimney is suitable for reading a umbrella cover (d).Have hot blast delivery outlet (e) at the mixing chamber upper side wall, can take over and pass to the drying technology workshop.Burner hearth pressure tap (g) is arranged in the bottom, combustion chamber, have furnace outlet temperature-measuring port (b), hot blast temperature-measuring port (c) and gravity safety anti-explosive door (f) at mixing chamber, body of heater is surrounded by the refractory material heat-insulation layer outward.

The air feed system of this stove is seen Fig. 5.Primary air fan (23) H=750mmH ₂O, Q=7200M ³/ h, main for burner, divide air feed block ring wind.Overfire air fan (24) H=206mmH ₂O, Q=27990M ³/ h, main heat supply wind furnace air distribution usefulness is that 300kg/h can adopt gravity-flow ventilation when following in the oil gun fuel consumption.

This stove is carried high-quality hot blast, thermic load H=2300KJ/h, 350～450 ℃ of hot blast temperatures, hot blast rate Q=60000～75000M for producing 5 to 80,000 tons of washing powder factory spray drying formings per year ³/ h.Using fuel is 3 ^#Heavy residual oil, calorific value is 9500～10000kd/kg, consumption peak is 550kg/h.

Claims

1, the heavy residual oil hot-blast stove of a kind of vertical combustion, by combustion chamber (1), secondary air chamber (2), mixing chamber (3) and chimney (5) are formed, it is characterized in that in mixing chamber, a sealing gland baffle ring (6) being installed near top of combustion chamber, this baffle ring is by endless tube (7), nipple (9), guide pipe (8) and inlet scoop (10) are formed, at endless tube (7) inwall several nipples of the uniform connection of horizontal direction (9) entad, nipple is communicated with guide pipe (8) again, open an inlet scoop (10) at endless tube (7) outer wall, in the chimney top one heat-resisting butterfly valve (11) is installed, is connected to Strok mechanism (12).

2, the heavy residual oil hot-blast stove of vertical combustion as claimed in claim 1 is characterized in that the sealing gland baffle ring is positioned at mixing chamber apart from combustion chamber 160mm place.

3, the heavy residual oil hot-blast stove of vertical combustion as claimed in claim 1 is characterized in that entad horizontal direction 5 nipples of uniform connection (9) of endless tube (7) inwall, is communicated with guide pipe (8) again.

4, the heavy residual oil hot-blast stove of vertical combustion as claimed in claim 1, the Strok mechanism that it is characterized in that connecting valve (11) is 90 ° of angles, 40kg thrust.