KR100294325B1 - Coal burning boiler apparatus - Google Patents

Abstract

PURPOSE: A coal burning boiler apparatus is provided to achieve improved heat efficiency by increasing a convective process and suction force, while preventing environmental contamination caused due to exhaust gas. CONSTITUTION: A plurality of water pipes(9) and fire pipes(9b) have left ends connected to a left water chamber(9c) and right ends connected to a right water chamber(9a), respectively. Fire pipes opened to a combustion chamber(13b) are penetrated through left and right water chambers and secured into a right drying chamber(10). An exhaust pipe(29) is connected to a desulphurization equipment(28) and a dust collecting cyclone(30). A steam tank(12) arranged at the top of the right water chamber is communicated to a dry steam pipe(11b), mounted in a drying chamber(10), and connected to an opposite steam collecting pipe(11a). A steam transfer pipe(7) is connected to a dry steam re-heating pipe(22), and the dry steam re-heating pipe is arranged in the upper portion of the combustion chamber. The exhaust pipe is communicated into the rear wall of the dust collecting cyclone, such that an exhaust flue(29') is directed downward. A blower(33) is arranged, such that a blower pipe is bent to the lower end of the dust collecting cyclone and the curved end of the blower pipe is opposed to the lower end of a central exhaust flue. A burner(33') has a pipe penetrating into the blower pipe of the blower, and the exhaust flue has a nozzle mounted at the lower end of the central exhaust flue. Coolant devices(31,31') are arranged at the exhaust flue which is extended from the central exhaust flue, and pumps(40,40') are arranged between vertical pipes(36,37). Nozzles(43,44) are connected into vertical pipes, and the vertical pipe(37) has a blower(38) and a coal injection silo(39) arranged at the top of the vertical pipe.

Description

Coal boiler equipment

The present invention relates to a pollution-free coal boiler device having excellent combustion power and vaporization function and constituting a desulfurization device and a CO ₂ gas removal device, without pollution due to exhaust gas.

In general, small boilers that are widely used in the past are inserted into a tube in a circular tank so that heat is passed through the tube to improve thermal efficiency, but large coal boilers are impossible due to vapor pressure, so large coal boilers include PCB type, BFBC type, There are various types other than CFBC type, but these are tube tubes that allow water to flow into the tube tube. The tube tubes are listed in a row only on the fuselage wall surface, and the tube tube cannot be lengthened because there is no rotating device in the body. In addition, since there is no separate combustion chamber and the whole inside is a firebox, the upper temperature is higher than the lower temperature ratio, so that the heat loss is enormous because it is not used to generate water vapor in the process of heating the water pipe and the exhaust is discharged to the unnecessary cyclone. Oil spray, lime powder spray and heated sand spray are installed in the firebox. Adding means to the exhaust heat is also mothamyeo increasing the combustion efficiency due to the excessive were many are sulfur dioxide, carbon monoxide, carbon dioxide, etc. toxic combustion of combustion chamber surface eseona place the tube pipe, such as a large amount of gas emitted into the environment configuration the defect.

The present invention in order to solve and supplement the above conventional drawbacks fundamentally, as opposed to the conventional structure to install a combustion chamber at the left end of the body to increase the combustion environment to significantly reduce the generation rate of carbon monoxide by almost complete combustion Multiple water pipes are installed in the body, and the pipes are double piped into the water pipes to prevent vapor pressure, which makes it possible to increase the size, double the vaporization function, and form a desulfurization device to remove toxic gases such as sulfurous acid gas and carbon dioxide. Therefore, it is possible to almost eliminate pollution and provide low coal and low coal anthracite coal and oil and gas.

1 is a perspective view of the present invention

Figure 2 is a cross-sectional view taken along the line A-A of the present invention

2 is a perspective view of a part of the present invention (firebrick).

Figure 3 is an enlarged cross-sectional view of the B-B line of the present invention

4 is an enlarged cross-sectional view taken along line C-C of the present invention;

5 is an enlarged cross-sectional view taken along the line D-D of the present invention.

6 is an enlarged cross-sectional view of the desulfurization apparatus 28 of the present invention.

Figure 7 is an enlarged cross-sectional view of the E-E line of the present invention

8 is an enlarged sectional view taken along the line F-F of the present invention

* Explanation of symbols for main parts of the drawings

1: refrain 2: bracket

3: pin 4: pedestal

5,6: hydraulic cylinder 8: hot water circulation pipe

9: water pipe 9 ': boiling water circulation pipe

9a: Excellent Room 9b: Corolla

9c: Left wing room 10: Dry room

11: connecting water pipe 11a: steam collection pipe

11b: dry steam engine 12: steam tank

12 ': circulation collection pipe 13: air compression chamber

13a: Embroidery tube (acting as stole) 13b: Combustion chamber

13c: limestone tray 14: rear wall

14 ': support plate 15: firebrick

16: ventilation groove 17, 17 ': inlet

18,18 ', 18 ″: Screw 19: Downcoming Path

20: limestone drop 21: rack gear

22: steam reheating pipe 23: residue recovery pipe

24: width 25: cleaning rod

25 ': Officer 26: Meeting

27: opening and closing discharge pipe 28: desulfurization apparatus

29: exhaust pipe 29 ': exhaust pipe

29a: central exhaust container 29b: nozzle

30: Cyclone 31,31 ': Cooling water device

32: lime cyro 32a: drain

33: blower 33 ': burner

34: water inlet 35: back filter

36,37: vertical vertical pipe 38: blower

39: 40,40 'lime pump: pump

41,42 Blower 43,44 Nozzle (Spray nozzle)

45: discharge pipe 45: ventilation passage

The present invention in the construction of the boiler, by forming the bracket and the hydraulic cylinder on the lower side of the chorus so that the body can be rotated to equilibrium, or left and right to simplify the production, inspection and repair and the water pipe and corolla between the left and right, the water pipe As the length of the flame passes longer than the inlet temperature ratio, the exhaust heat is much smaller than the inlet temperature ratio.The left and right chamber pipes are built in multiple layers as shown in Fig. 8, and the right chamber pipe is connected to the steam tank as shown in Fig. 3 and left. The water pipe is connected to the circulating water collection pipe as shown in Fig. 4, and a large number of double pipes are inserted into the water pipe in the left and right water pipes, and coal is supplied to the limestone pants on the upper side of the combustion chamber. Falling to the stole along the slope, small shots are dropped between the U-shaped pipes and hit the refractory brick, and the barrel between the ramps of the refractory brick The compressed air is injected into the wind groove, and the air is injected from the lower side to completely burn the coal, and the exhaust gas is reheated in the cyclone to be desulfurized, and the toxic gas is removed to form a pollution-free coal boiler.

That is, several brackets (2) attached to the lower surface of the various choruses (1) of the boiler are mounted on the pedestal (4) with pins (3) and hydraulic cylinders (5) for adjusting the inclination angle of the body are mounted. The left and right chamber pipes 9c and 9a through which the corollas 9b penetrate, respectively, and the hot water circulation pipes 9 'are provided with a narrow gap therebetween, and the inner pipes 9b which are internally introduced into the combustion chamber 13b. ) Passes through the left water pipe chamber (9c) through the water pipe (9) and the right water pipe chamber (9a) to be introduced into the dry steam chamber (10), and the remnant recovery pipe (23) under the refrain (1) is a combustion chamber ( 13b) inwardly.

The connecting water pipes 11 are connected to the lower left water pipe 9c, the c-shaped water pipe 13c passes through the combustion chamber 13b, and the upper water pipe is bent to pass through the circulating water collection pipe 12 ', and the left water pipe room 9c. In communication with each other, the hot water circulation is promoted, and an opening and closing plate 27 for discharging carbonaceous material is formed at the lower end of the combustion chamber 13b.

The inside of the combustion chamber rear wall 14 is fixed to the rear wall 14 with several supporting plates 14 'in the air extrusion chamber 13, and the refractory bricks 15 having ventilation grooves 16 formed therebetween are laminated in multiple layers. After bonding with a refractory cement between them, a limestone support (13C: C water pipe) is connected to the upper side, and a plurality of cleaning rods (25 ') are attached between the lower plates of the C-water pipe (13a) and the rostol. Is fixed to the transverse (24) and the rotating shaft 26 is configured to support the cleaning rod (25) while rotating, to advance horizontally as a plurality of hydraulic cylinders (6) to clean the projecting pipe (25) ') When the coal ash intermittently falls from the rostol and pushes down the coal ash, the opening and closing plate 27 is pushed open to the coal ash, and closes automatically when the coal ash falls.

Most of the coal ash generated during the combustion process is discharged to the outside by the screw 18 ″, and only fine dust is discharged to the cyclone.

The blower 41 presses air into the air compression chamber 13, the blower 42 is injected upward from the lower portion of the combustion chamber 13b through the blow passage 46, and the coal injected into the coal inlet 17 ′ is screwed. (18 ') is uniformly dropped and supplied to the combustion chamber (13b) and the limestone injected into the limestone inlet (17) is also heated by preheating of the combustion chamber (13b) in the downcomer (19) by the screw (18) to the proper heating. It is rolled down or blocked by the dropping opening 20 by the rack gear 21 (timer apparatus) which adjusts to fall according to the state, and as soon as it rolled down, it sprayed water from the bottom and obtained powdered slaked lime.

The hot water circulation pipe (8) connecting the left and right chamber pipes (9c) and (9a) on the chorus (1) is connected to the steam tank (12) and the circulating water collection pipe (12 ') above the left chamber pipe (9c). The hot water circulation pipe (9 ') is the hot water circulation between the left and right chamber pipes (9c) (9a) and the dry steam engines (11b) are bent in the dry steam chamber (10) to be collected in the dry steam collecting pipe (11a) The steam consists of an inner cylinder with a steam transfer pipe (7), which extends outward to the front and horizontally extends the dry steam reheating tube to the upper end of the combustion chamber (13b) to be discharged to the steam discharge pipe (10 '), and within the dry steam chamber (10). The collected heat is discharged to the exhaust pipe 29 to connect the exhaust pipe 29a to the center of the cyclone 30 and extend downward, and the blower tube of the blower 33 intrudes into the lower portion of the cyclone 30 so that the exhaust pipe 29a is discharged. Close to the lower end, the hydrated lime path 32 is mounted on the blower pipe of the blower 33, the hydrated lime is introduced, and the burner 33 'is installed to install the nozzle 29b. Install the desulfurization apparatus 28 which bear the flame in the lower central portion of the central passage (29a).

Here carbon monoxide is converted to carbon dioxide at high temperatures and sulfite is converted to calcium sulfite.

The upper end of the central exhaust cylinder (29a) is bent the exhaust cylinder (29 ') sideways so that the temperature of the coolant (31) is adjusted to the temperature of the use of the back filter 35, the coolant (31') is the temperature at which C0 ₂ is dissolved in water Calcium sulfite is discharged to the lower end of the cooling water device 31 to adjust the gas to the lower part, and dust and heavy metal attached to the calcium sulfite are collected from the back filter 35, and the plastic resin pipe 36 is pump 40. C0 ₂ is first melted in the water sprayed by the nozzle 43, and the coalescing vertical pipe 36 is connected to the coalescing resin pipe 37 at the upper end, and limestone is stacked in multiple layers in the coalescing resin pipe 37. (Not shown) When the water flows down between the limestones, and the slaked lime injecting passage 39 and the blower 38 are mounted on the upper side, and the slaked lime is injected and blown in the slaked lime passage 39, the C0 ₂ dissolved in the water is pumped ( When sprayed into the nozzle 44 by the pressure 40 '), it becomes calcium carbonate when When caustic soda water is injected instead of slaked lime, it becomes sodium carbonate, and these by-products are used as high-quality industrial materials without disposal.

The operation thereof is as follows.

The pipes are equipped with brackets and a plurality of hydraulic cylinders 5 at the bottom of several boilers of the boiler to pipe the water pipes and corollas between the left and right chamber pipes 9c and 9a for a long time. The heat efficiency is doubled by passing only through this corolla, and when the coal dropped from the coal drop passage during operation falls on the lime tray (13C) at the top of the water pipe, the large coal is piled up on the roll and the powder and the small mass are When it escapes between the water pipes and falls on the inclined surface of the refractory brick 15, it is pushed by the compressed air which is injected into the plurality of ventilation grooves 16 and adheres to the upper layer of the combustion chamber 13b to burn while floating. Combustion and exothermic action is strong, and the flame passes at high speed into the corolla 9b by the buoyancy of the air injected from the lower side and the high pressure of the compressed air. Since the heat efficiency is doubled and abnormally varied depending on the frictional strength during heating, the water in the water pipe 9 surrounding it is rapidly heated to high temperature. In the course of passing through 11b, the high pressure dry steam, which is dry in the dry steam chamber 10, gathers in the steam collecting pipe 11a, passes through the flame of the upper side of the combustion chamber 13b through the steam transfer pipe 7, and is reheated, Dry steam of the turbine drives the turbine (not shown) connected through the discharge pipe 10 '.

The steam generated in this process is compressed in the steam tank 12, and the hot water is circulated through the hot water circulation pipes 8 and 9 'to the left chamber pipes 9c, and the hot water is circulated from the high temperature to the low temperature. In addition, the connection water pipes 11 also increase the vaporization function in addition to the vaporization action, and the unburned residue collected in the dry steam chamber 10 is recovered to the combustion chamber 13b through the remnant recovery pipe 23 and recombusted. They may be connected to the carbon feed screw 18 ″ and discharged depending on the combustion conditions.

The heat discharged to the corolla 9b enters the cyclone 30, surrounds the central exhaust pipe 29a, turns, descends, and rises and discharges to the lower opening. The hydrated lime powder supplied from the slaked lime cyclone 32 is blower ( 33) The blown lime powder is strongly blown into the lower end of the central exhaust pipe 29a in the blower pipe, and at the same time, the flame of the burner 33 'is oxidized by incineration of the burned lime powder, carbon monoxide, and sulfur dioxide at a high temperature, and the carbon monoxide is converted to carbon dioxide. The sulfurous acid exhibits a strong desulfurization action of the desulfurization apparatus 28 which causes a predetermined reaction to become calcium sulfite.

The desulfurized gas becomes calcium sulfite, passes through the exhaust pipe 29 ', falls through the outlet of the lower portion of the cooling water device 31, and partly passes through the back filter 35, and the particulate metal ash or heavy metal attached to the slaked dust is collected. Water is baptized into the gas passing through the row collector pipe (36) to dissolve the primary CO ₂ , and the water dissolved in the CO ₂ is sprayed and washed limestone in the course of passing through the row of vertical pipes (37). As it is lowered, carbon dioxide is dissolved in water at the proper mixing and in the temperature to become carbonate ions, which are combined with calcium ions to become calcium carbonate.

The gas body discharged in this way emits pollution-free gas. In the combustion process, the combustion pipe passes through the fire pipe 9B into the water pipe 9 and becomes a double pipe to prevent vapor pressure and to remove toxic and harmful gas from the desulfurization device 28. It is completely absorbed.

According to the present invention, the left and right chambers are formed in multiple layers between the left and right chamber pipes, and the left and right chamber pipes are formed in multiple layers at a narrow interval. As it can rotate, it is easy to manufacture, inspect, and repair by extending these double pipes, and the convection action is increased because the water pipes and corollas are lengthened, creating a strong suction force, which causes strong friction when the flame passes through the pipes at high speed, resulting in thermal efficiency. In this structure, when the high temperature of the combustion chamber passes, the heat of combustion changes to low temperature and the exhaust heat is discharged to a very low temperature, which reduces coal consumption due to the reduction of coal consumption. B. The sulfur dioxide is also reduced by the action of desulfurization and shortening the time for carbon dioxide reduction and vaporization. It is a groundbreaking device that transforms into calcium and converts carbon dioxide into calcium carbonate and sodium carbonate as gas absorber, which is effective in preventing air pollution.

Claims (2)

Left and right chambers (9c) and (9a) are installed at the left and right ends of the chorus, and a plurality of water pipes (9) and corollas (9b) are placed in the middle, and the left end is the left chamber (9c), and the right end is the right chamber (9a). Corolla 9b connected to each other and opened into the combustion chamber 13b penetrates through the left and right chamber pipes 9c and 9a to be introduced into the right dry chamber 10, and then to the rear end of the dry chamber 10. The exhaust pipe 29 is connected to the desulfurization apparatus 28 to communicate with the cyclone 30 for dust collection, and to the steam tank 12 at the upper end of the rain chamber, in communication with the dry steam engine 11b and installed in the dry steam chamber 10 on the opposite side. To the steam set pipe 11a, and the steam transfer pipe 7 is connected to the dry steam reheat pipe 22 to pipe the dry steam reheat pipe 22 to the upper layer of the combustion chamber 13b to pass through the flame. (10 '), and then the exhaust pipe 29 is connected to the inner surface of the rear wall of the cyclone 30 for dust collection, but the exhaust pipe 29a is piped downward to the center, and the blower tube of the blower 33 is closed. Bending pipe to the lower side of the cyclone (30) and the upwardly curved front end facing the lower end of the central exhaust pipe (29a) and install the slaked lime injection path 32 into the blowing pipe to blow the injection pipe of the burner (33 ') And the nozzle 29b at the lower end of the central exhaust cylinder 29a, and the cooling water device 30, 31 'at one side of the exhaust cylinder 29', which is curved at the upper end of the cyclone 30 and extended the central exhaust cylinder 29a. And the lower end is connected to the vertical plumb pipes 36 and 37 and the pumps 40 and 40 'are connected to the nozzles 43 and 44' to the inside of the vertical pipe, respectively. Straight pipe 37, the upper portion of the coal boiler device 39 between the blower 38 and the lime injection. The refractory brick 15 constituting the ventilation grooves 16 between the combustion chamber 13b and the air compression chamber 13 is inclinedly stacked, and the c-shaped water pipes 13a and the small pipes 25 ' Coal boiler device is fixed to the horizontal rod (24) attached to the hydraulic cylinders (6) to support the back and forth when the back and forth, and to open and close the drop hole (20) by the rack gear (21).