CN101929732A

CN101929732A - Environment-friendly and energy-saving constant pressure hot water boiler

Info

Publication number: CN101929732A
Application number: CN2009100745263A
Authority: CN
Inventors: 王兰柱; 张淑琴; 李春乐
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-19
Filing date: 2009-06-19
Publication date: 2010-12-29
Anticipated expiration: 2029-06-19
Also published as: CN101929732B

Abstract

The invention relates to the technical field of constant pressure coal burning boilers, in particular to an environment-friendly and energy-saving constant pressure hot water boiler. The common hot water boiler at present has the following defects of large size, high manufacturing cost, inadequate fuel combustion, large heat loss, low thermal efficiency, vast dust discharge and severe environmental pollution. The hot water boiler consists of a preheating chamber and a combustion chamber, wherein the combustion chamber is divided into a combustion region and a coal-storing region by a water jacket partition wall; a convection tube is installed above the combustion region; a multi-stage return smoke tube passes through a preheating water jacket of the preheating chamber; high temperature gas and smoke dust pass through the return smoke tube to preheat cold water in the preheating water jacket; and the preheated cold water flows into the water jacket of the combustion chamber for heating. The fuel coal is subjected to dry distillation and then combustion in the coal-storing region so that the fuel is adequately combusted, and the thermal efficiency reaches 84%; and a dust chamber is arranged inside the boiler, and the dust in flue gas is kept inside the boiler. The invention has the advantages of small size, large coal-storing amount, high efficiency and energy saving and the emission lower than environment-friendly standard requirements.

Description

Environment friendly energy-saving ordinary pressure water-boiling boiler

Technical field

The present invention relates to the atmospheric coal-fired boiler technical field, specifically a kind of environment friendly energy-saving ordinary pressure water-boiling boiler.

Background technology

Boiler is a kind of equipment of extensive use in industry and the life.Common hot-water boiler adopts fuel such as burning coal cinder, coke, fine coal to obtain energy mostly at present, the following shortcoming of these boiler ubiquities: boiler volume is big, manufacturing cost is higher, fuel in the boiler can not completing combustion, and the heat energy that the burning back is discharged can not be fully used, a large amount of solid dust and the high-temperature gas that produce after the fuel combustion, directly by smoke stack emission in air, exhaust gas temperature is up to 300 ℃-400 ℃, thermal loss is bigger, the thermal efficiency is low, and discharging such as flue dust, sulphur is big for environment pollution, serious waste of resources.

Summary of the invention

The purpose of this invention is to provide a kind of environment friendly energy-saving ordinary pressure water-boiling boiler, can make burning more abundant, reasonable.Problems such as it is insufficient to solve existing boiler combustion, and the thermal efficiency is low, and environmental pollution is serious.

Technical scheme of the present invention is: environment friendly energy-saving ordinary pressure water-boiling boiler is made up of combustion chamber and preheating chamber; The combustion chamber is made up of combustion zone, Coal Storage Area, combustion chamber water jacket, convection tube, delivery port; The combustion chamber water jacket is connected with delivery port; The combustion chamber water jacket is communicated with hot water jacket by the transmission mouth; The water jacket partition wall that is communicated with the combustion chamber water jacket is separated into combustion zone and Coal Storage Area with the combustion chamber, and the combustion zone is communicated with below the water jacket partition wall with the Coal Storage Area; On the furnace body wall of upper end, Coal Storage Area coal filling hole is arranged; On the furnace body wall of combustion zone breast hole is arranged; There are several convection tubes the top, combustion zone, and the convection tube two ends are communicated with the combustion chamber water jacket respectively; Fire grate is equipped with in combustion zone and below, Coal Storage Area; On the furnace body wall of fire grate below cleaning door is arranged; There is smoke passing port the upper end, combustion chamber; Smoke passing port is connected with elementary backhaul smoke pipe through dust storage chamber; Preheating chamber is made up of hot water jacket, backhaul smoke pipe, water return outlet, outlet flue; Be connected with water return outlet on the hot water jacket, multi-stage return smoke tube is passed hot water jacket; All be communicated with between the backhaul smoke pipes at different levels and between outlet flue and the final stage backhaul smoke pipe by dust storage chamber; Each dust storage chamber upper end or lower end all have cleaning door.

Operation principle of the present invention is: the water that temperature is lower enters hot water jacket by water return outlet, because multi-stage return smoke tube is passed hot water jacket, high-temperature gas that flow out the combustion chamber and flue dust flow into the backhaul smoke pipe through smoke passing port, are the cold water preheating in the hot water jacket; Through the cold water of preheating, flow into combustion chamber water sleeve convection tube, heat up rapidly by the combustion chamber heating again.The fire coal of inserting the Coal Storage Area, combustion chamber produces fuel gas through destructive distillation, enters the combustion zone by water jacket partition wall below, fully mix with air, and the fire coal in the combustion zone burns, and reaches the purpose of after-flame.Most solid dust in the flue dust drops in each dust storage chamber, has reduced the soot dust granule in the emission gases.

Advantage of the present invention is: rational in infrastructure, boiler volume is little, and production cost is lower, and steel consumption is 60% of a conventional boiler; Easy to use, coal storage is big, coal incendivity 6-7 hour; Adopt convection tube and backhaul smoke pipe structure, the cold water preheating, modes such as coal-fired destructive distillation make fired coal combustion abundant, and the thermal efficiency reaches 84%, and exhaust gas temperature only is about 170 ℃; It is very fast that boiler plays temperature, and 16 ℃ water is heated and can be reached 50 ℃ in 5-8 minute; Only 6 kilograms in water consumption coal per ton is compared energy-conservation reaching more than 30% with existing coal-burning boiler.Many backhauls smoke pipe structure is collected dust in flue gas and stays boiler internal; 82.62 milligrams every cubic metre of sulfur dioxide (SO2) emissions, 86.22 milligrams every cubic metre of dust emissions (900 milligrams every cubic metre of national standard sulfur dioxide (SO2) emissions, 120 milligrams every cubic metre of dust emissions) are lower than the environmental protection standard requirement.

Description of drawings

Fig. 1 is a structural representation of the present invention

Fig. 2 for the A-A of Fig. 1 of the present invention to cutaway view

The specific embodiment

1 convection tube among the figure, 2 delivery ports, 3 combustion zones, 4 Coal Storage Areas, 5 coal filling holes, 6 breast holes, 7 water jacket partition walls, 8 smoke passing ports, 9 water return outlets, 10 one-level backhaul smoke pipes, 11 secondary backhaul smoke pipes, 12 3 grades of backhaul smoke pipes, 13 outlet flues, 14 dust storage chambers, 15 dust storage chambers, 16 dust storage chambers, 17 dust storage chambers, 18 cleaning doors, 19 cleaning doors, 20 cleaning doors.

Embodiment 1

From Fig. 1---Fig. 2 as can be known, the present invention is made up of combustion chamber and preheating chamber; The combustion chamber is made up of convection tube 1, delivery port 2, combustion zone 3, Coal Storage Area 4, combustion chamber water jacket; The combustion chamber water jacket is connected with delivery port 2; The combustion chamber water jacket is communicated with hot water jacket by the transmission mouth; The water jacket partition wall 7 that is communicated with the combustion chamber water jacket is separated into one to two combustion zone and one to four Coal Storage Area with the combustion chamber, and combustion zone 3 is communicated with below water jacket partition wall 7 with Coal Storage Area 4; On the furnace body wall of 4 upper ends, Coal Storage Area coal filling hole 5 is arranged, breast hole 6 is arranged on the furnace body wall of combustion zone 3; There are several convection tubes 1 top of combustion zone, and convection tube 1 two ends are communicated with the combustion chamber water jacket respectively; Fire grate is equipped with coal-storage room 4 belows in combustion zone 3; On the furnace body wall of fire grate below cleaning door 20 is arranged; The smoke passing port 8 of upper end, combustion chamber communicates with one-level backhaul smoke pipe 10 through dust storage chamber 14; Preheating chamber is made up of hot water jacket, one-level backhaul smoke pipe 10, secondary backhaul smoke pipe 11, three grades of backhaul smoke pipes 12, water return outlet 9, outlet flues 13; Be connected with water return outlet 9 on the hot water jacket, one-level backhaul smoke pipe 10, secondary backhaul smoke pipe 11 and three grades of backhaul smoke pipes 12 all pass hot water jacket, one-level backhaul smoke pipe 10 and secondary backhaul smoke pipe 11 by dust storage chamber 15 be communicated with, secondary backhaul smoke pipe 11 and three grades of backhaul smoke pipes 12 by dust storage chamber 16 be communicated with, three grades of backhaul smoke pipes 12 are communicated with by dust storage chamber 17 with outlet flue 13; Each dust storage chamber upper end or lower end have cleaning door.

During work of the present invention, the water that temperature is lower enters hot water jacket by water return outlet 9, because backhaul smoke pipes at different levels pass hot water jacket, the high-temperature gas and the flue dust that are flowed out by the combustion chamber pass through smoke passing port 8, flow into the backhaul smoke pipe, carry out heat exchange with the cold water in the hot water jacket, the most solid dust in the flue dust drops in the dust storage chamber, has reduced the soot dust granule in the emission gases; After the preheating of cold water process hot water jacket, flow into combustion chamber water sleeve convection tube 1, by combustion chamber 3 heating.The fire coal of inserting Coal Storage Area 4 produces fuel gas through destructive distillation, enters combustion zone 3 by water jacket partition wall 7 belows, fully mixes with air, and burns with combustion zone 3 interior fire coals, reaches the purpose of after-flame.Most solid dust in the flue dust drops in each dust storage chamber, has reduced the soot dust granule in the emission gases.

Claims

1. an environment friendly energy-saving ordinary pressure water-boiling boiler is characterized in that: be made up of combustion chamber and preheating chamber; The combustion chamber is made up of convection tube (1), delivery port (2), combustion zone (3), Coal Storage Area (4), combustion chamber water jacket; The combustion chamber water jacket is connected with delivery port (2); The combustion chamber water jacket is communicated with hot water jacket by the transmission mouth; The water jacket partition wall (7) that is communicated with the combustion chamber water jacket is separated into combustion zone (3) and Coal Storage Area (4) with the combustion chamber, and combustion zone (3) are communicated with in water jacket partition wall (7) below with Coal Storage Area (4); Have coal filling hole (5) on the furnace body wall of upper end, Coal Storage Area (4); Have breast hole (6) on the furnace body wall of combustion zone (3); There are several convection tubes (1) top, combustion zone (3), and convection tube (1) two ends are communicated with the combustion chamber water jacket respectively; Fire grate is equipped with below, Coal Storage Area (4) in combustion zone (3); Have cleaning door (20) on the furnace body wall of fire grate below; There is smoke passing port (8) upper end, combustion chamber, and smoke passing port (8) is connected with elementary backhaul smoke pipe through dust storage chamber (14); Preheating chamber is made up of hot water jacket, backhaul smoke pipe, water return outlet (9), outlet flue (13); Be connected with water return outlet (9) on the hot water jacket, multi-stage return smoke tube is passed hot water jacket, all is communicated with by dust storage chamber between the backhaul smoke pipes at different levels and between outlet flue (13) and the final stage backhaul smoke pipe; Each dust storage chamber upper end or lower end have cleaning door.

2. a kind of environment friendly energy-saving ordinary pressure water-boiling boiler as claimed in claim 1 is characterized in that: described backhaul smoke pipe is divided into three grades.

3. a kind of environment friendly energy-saving ordinary pressure water-boiling boiler as claimed in claim 1 is characterized in that: described combustion zone (3) are one to two.

4. a kind of environment friendly energy-saving ordinary pressure water-boiling boiler as claimed in claim 1 is characterized in that: described Coal Storage Area (4) are one to four.