CN201373561Y - Energy-efficient and environment-friendly boiler - Google Patents

Abstract

An energy-efficient and environment-friendly boiler belongs to the technical field of the design and the manufacture of the boilers. The boiler consists of a water jacket, a hearth and a gas exhaust duct. A secondary combustion chamber is arranged at the lower part of a boiler grate; a tertiary combustion chamber is arranged on the left side of the boiler hearth; a hot-air jetting hole is formed on the inner edge of a boiler door frame; an air outlet tube for a blower is provided with a superconductive hot-air tube, and an air volume control valve is arranged between the hot-air tube and the air outlet tube for the blower; a hot-air cavity is formed inside the hearth and provided with a secondary oxygen-supply tube; a tertiary oxygen-supply tube is arranged at the left end of the secondary oxygen-supply tube. When the boiler operates, the hot-air oxygen is directly blown onto the fuel surface through the hot-air jetting hole. Smoke gas generated by the combustion of fuel flows inversely and enters the secondary combustion chamber and the tertiary combustion chamber; and with the aid of the hot air oxygen, the combustible matters contained in the fuel gas are further combusted until be completely combusted at the maximum degree. The contents of pollutants in the smoke gas are greatly reduced, so that the discharge standard is far below the discharge standard specified by the nation.

Description

Energy-saving, environmental protection boiler

Technical field

The utility model belongs to boiler design and manufacturing technology field.

Background technology

Now being used for industrial production and civil heating boiler, all is to be made of water jacket, burner hearth, smoke discharging pipe.Fuel heats the water in the water jacket for its use in the burner hearth internal combustion.The flue gas that fuel combustion produces directly is discharged into the atmosphere from smoke discharging pipe.The shortcoming of this boiler is that Fuel Consumption is big, and the thermal efficiency is low, and a large amount of combustibles is discharged in the atmosphere, and not only serious environment pollution is wasted a large amount of energy again.

Summary of the invention

The purpose of this utility model provides a kind of thermal efficiency height, and the boiler that quick heating and discharge capacity are little is to solve the practical problem that existing product exists.

Structure of the present utility model is as shown in drawings: be made of body of heater and convection tube group.Around the inboard wall of furnace body is water jacket, has the convection tube group at the body of heater internal upper part.In convection tube group bottom is burner hearth, on the top of burner hearth cleaning door on is arranged.Have fire grate in lower furnace portion.Fire grate is a body, is connected with convection tube group and water jacket.Have fire door at furnace front.On the firedoor frame inner edge, have the hot blast injection hole.At the rear portion of body of heater one air blast is arranged.Have the superconduction warm-air pipe on the discharge pipe of air blast.Have volume control damper between warm-air pipe and the air blast discharge pipe.One hot blast chamber is arranged in burner hearth.Have secondary oxygen supply pipe on the hot blast chamber, on secondary oxygen supply pipe left end, have the oxygen supply pipe three times.In upper of furnace body one smoke evacuation tube connector is arranged, below the body of heater rear portion, smoke exhaust pipe is arranged.The superconduction warm-air pipe is connected with hot blast chamber, hot blast injection hole, smoke evacuation connecting leg and smoke exhaust pipe.Bottom at fire grate has secondary combustion chamber.Have three times the combustion chamber in the left side of burner hearth.Combuster partition wall between three combustion chambers and the burner hearth.Have lower deashing hole in the secondary combustion chamber front portion.Method of work of the present utility model is: will dose coal fuel in the burner hearth earlier, place kindling above the coal.After igniting, start air blast to the burner hearth oxygen supply, temperature rises in the burner hearth, the adjusting volume control damper of Sui breezes up, make fire box temperature continue to go up and give birth to, the temperature of burner hearth is warmed the superconduction warm-air pipe, and the cold wind that air blast is sent into is heated to form hot blast oxygen by the superconduction warm-air pipe time.Because the superconduction warm-air pipe is the superconductor manufacturing, so be heated rapidly, temperature rises fast.Hot blast oxygen directly blows at fuel surface by warm-air pipe, hot blast chamber and hot blast injection hole under the effect of air blast.The flue gas reverse flow that fuel combustion is produced enters secondary combustion chamber.Contain a large amount of combustibles in the flue gas of this moment,, burn away in that second-time burning is indoor as sulfur dioxide, carbon dioxide, carbon monoxide and hydrocarbon etc.The flue gas that the back produces of waiting to burn enters the combustion chamber three times, hot blast oxygen combustion-supporting down, make the combustible that is contained in the flue gas further burn, to greatest extent with flammable matter after-flame.Make that pollutant load reduces significantly in the flue gas, be significantly less than national specified discharge standard.This product is to utilize hot blast oxygen can activate the flammable matter of fuel, and flammable qualitative change must be enlivened, and coal-fired combustible component can be designed with the characteristics of oxygen generation kickback, is designed to have secondary combustion chamber, three chamber structures.The contained combustible of fuel is fully burned.So not only save the energy, fallen the low emission amount again significantly.According to parties concerned's test, boiler thermal output reaches 85.7%.The graceful oke exhaust blackness of Green reaches 0.3 grade.SO2 emissions are 275 milligrams for every cubic metre.Be significantly less than discharging standards.It is a kind of desirable coal-burning boiler.

Description of drawings

Accompanying drawing is the utility model structural representation

Fig. 1 is the utility model front section view

1-convection tube group 2-superconduction warm-air pipe 3-smoke evacuation tube connector 4-smoke exhaust pipe 5-goes up three combustion chambers of partition wall 16-secondary combustion chamber 17-, cleaning door 6-fire door 7-hot blast chamber 8-lower deashing hole 9-secondary oxygen supply pipe 10-fire grate 11-hot blast injection hole 12-three oxygen supply pipes 13-combustion chamber

Fig. 2 is the utility model side sectional view

1-convection tube group 2-superconduction warm-air pipe 4-smoke exhaust pipe 5-goes up three oxygen supply pipes of cleaning door 6-fire door 8-lower deashing hole 10-fire grate 11-hot blast injection hole 12-14-air blast 15-volume control damper

The specific embodiment

Structure of the present utility model is as shown in drawings: be made of body of heater and convection tube group.Around inboard wall of furnace body is water jacket, has convection tube group 1 at the body of heater internal upper part.In convection tube group bottom is burner hearth, and cleaning door 5 on is arranged on the top of burner hearth.Have fire grate 10 in lower furnace portion.Have fire door 6 at furnace front.On the firedoor frame inner edge, have hot blast injection hole 11.One air blast 14 is arranged at the rear portion of body of heater.Have superconduction warm-air pipe 2 on the discharge pipe of air blast.Have volume control damper 15 between warm-air pipe and the air blast discharge pipe.One hot blast chamber 7 is arranged in burner hearth.Have secondary oxygen supply pipe 9 on the hot blast chamber, on secondary oxygen supply pipe left end, have oxygen supply pipe 12 three times.In upper of furnace body one smoke evacuation tube connector 3 is arranged, smoke exhaust pipe 4 is arranged below the body of heater rear portion.Have secondary combustion chamber 16 in the bottom of fire grate.Have three times combustion chamber 17 in the left side of burner hearth.Combuster partition wall 13 between three combustion chambers and the burner hearth.Have lower deashing hole 8 in the secondary combustion chamber front portion.

Claims (1)

1. Energy-saving, environmental protection boiler, by water jacket, burner hearth, smoke discharging pipe constitutes, it is characterized in that: have convection tube group (1) at the body of heater internal upper part, on the firedoor frame inner edge, have hot blast injection hole (11), one air blast (14) is arranged at the rear portion of body of heater, have superconduction warm-air pipe (2) on the discharge pipe of air blast, have volume control damper (15) between warm-air pipe and the air blast discharge pipe, one hot blast chamber (7) is arranged in burner hearth, have secondary oxygen supply pipe (9) on the hot blast chamber, on secondary oxygen supply pipe left end, have three oxygen supply pipes (12), in upper of furnace body one smoke evacuation tube connector (3) is arranged, smoke exhaust pipe (4) is arranged below the body of heater rear portion, have secondary combustion chamber (16) in the bottom of fire grate, have three combustion chambers (17) in the left side of burner hearth, combuster partition wall (13) between three combustion chambers and the burner hearth.

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