Garbage bin heating system for household garbage incineration plant

Abstract

The utility model discloses a garbage bin heating system for a household garbage incineration plant, which comprises a garbage bin, and a plurality of steam warm air blowers are arranged at the upper end of the garbage bin; a heat source inlet of each steam fan heater is connected with the first heat source supply branch and the second heat source supply branch; and a heat source outlet of each steam fan heater is communicated and connected with the interior of the garbage bin. According to the garbage bin heating system for the household garbage incineration plant, the garbage bin is heated through the steam warm air blowers above the garbage bin, the proper temperature of a garbage pool is guaranteed, the garbage fermentation effect and the heat value of garbage entering the incinerator are improved, stable operation of the garbage incinerator in winter is guaranteed, the operation cost is reduced, and meanwhile the environmental protection risk is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to garbage silo technical field especially relates to a garbage silo heating system for domestic waste incineration plant. BACKGROUND

[0002] At present, along with the improvement of people's living standards, garbage quantity also increases, and garbage power generation emerges as the times require, garbage power generation can change waste into treasure, and the calorific value of garbage is fully utilized.

[0003] The lowest temperature of garbage silo in northern region is below 10 DEG C in winter, and garbage in the garbage silo cannot be fully fermented, which leads to poor combustion stability of boiler, low power generation per ton of furnace, and seriously affects the calorific value of furnace garbage and the stable incineration of boiler, so auxiliary fuel combustion needs to be frequently put in, which increases operation cost and also has certain environmental protection risk. CONTENT OF UTILITY MODEL

[0004] Therefore, the utility model provides a garbage silo heating system for domestic waste incineration plant, guarantees suitable temperature of garbage pool, improves garbage fermentation effect and calorific value of furnace garbage, ensures stable operation of garbage incinerator in winter, reduces operation cost and avoids environmental protection risk.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A garbage silo heating system for domestic waste incineration plant, including garbage silo, the upper end of garbage silo is equipped with a plurality of steam warm air blower, the heat source import of each steam warm air blower is connected with first heat source supply branch, second heat source supply branch, the heat source export of each steam warm air blower is connected with the inside of garbage silo,

[0007] The first heat source supply branch includes medium pressure steam pipe, one end of medium pressure steam pipe is connected with steam turbine first stage extraction, the other end of medium pressure steam pipe is connected with steam warm air blower steam supply pipe, the second heat source supply branch includes low pressure steam pipe, water preparation workshop heating main pipe and low pressure steam supply pipe, one end of low pressure steam pipe is connected with steam turbine second stage extraction, the other end of low pressure steam pipe is connected with water preparation workshop heating main pipe, water preparation workshop heating main pipe and low pressure steam supply pipe are connected, low pressure steam supply pipe and warm air blower steam supply pipe are connected, warm air blower steam supply pipe and a plurality of steam inlet pipes are connected, a plurality of steam inlet pipes are connected with the heat source import of a plurality of steam warm air blowers one by one.

[0008] The water preparation workshop heating main pipe is equipped with manual total door on the pipeline between low pressure steam pipe and low pressure steam supply pipe, first manual primary door, pressure regulating valve and first manual secondary door are sequentially arranged on medium pressure steam pipe.

[0009] Further, each of the steam air heaters comprises a shell, an air inlet, a heat exchanger, a fan, and an air outlet pipe;

[0010] The inside of the shell is sequentially fixed with the fan and the heat exchanger from top to bottom; a containing space is left between the fan and the inner upper wall of the shell; an air inlet is provided in the middle of the upper wall of the shell;

[0011] The heat exchanger comprises a frame, heat exchange pipes, and heat dissipation fins; a plurality of heat dissipation fins are fixed in the inside of the frame; the heat exchange pipes are fixed in the plurality of heat dissipation fins; the inlets of the heat exchange pipes are steam air heater heat source inlets; the inlets of the heat exchange pipes of each of the steam air heaters are connected with one steam inlet pipe, and the outlets of the heat exchange pipes of each of the steam air heaters are connected with a water return branch;

[0012] A heat source outlet is provided on the outer wall of the shell; the heat source outlet is located below the heat exchanger; the heat source outlet is connected with the air outlet pipe; the air outlet pipe extends into the inside of the garbage bin.

[0013] Further, the heat exchange pipes are serpentine.

[0014] Further, the water return branch comprises a water return pipe, a first drainage ditch pipe, a drain tank, drain pipes, and a deaerator;

[0015] The outlets of the heat exchange pipes of each of the steam air heaters are connected with one water outlet pipe; all the water outlet pipes are connected with the water return pipe; the water return pipe is connected with the first drainage ditch pipe; the water return pipe is connected with the inlet of the drain tank; the outlet of the drain tank is connected with two drain pipes; the two drain pipes are respectively provided with drain pumps; the two drain pipes are connected with the inlet of the deaerator through pipes.

[0016] Further, a check valve and a bypass manual door are provided on the pipeline between the steam turbine first-stage extraction steam and the medium-pressure steam pipe; a check valve and a bypass manual door are provided on the pipeline between the steam turbine second-stage extraction steam and the low-pressure steam pipe; a manual door is provided on the pipeline between the low-pressure steam supply pipe and the water production workshop; the water production workshop heating main pipe is also connected with the second drainage ditch pipe; the second drainage ditch pipe is provided with a third manual primary door and a fourth manual secondary door;

[0017] A steam supply manual door and a check valve are provided on the low-pressure steam supply pipe;

[0018] A fifth manual primary door and a sixth manual secondary door are provided on the steam air heater steam supply pipe;

[0019] An inlet steam manual door is provided on each of the steam inlet pipes; a water return manual door is provided on each of the water outlet pipes;

[0020] The seventh manual primary door and the eighth manual secondary door are arranged on the backwater pipe.

[0021] The inlet manual door, the outlet manual door and the check valve are arranged on each of the drain pipes.

[0022] Compared with the prior art, the garbage bin heating system for the domestic waste incineration plant has the advantages that the garbage bin is heated by the steam warm air machines arranged above the garbage bin, the suitable temperature of the garbage pool is ensured, the garbage fermentation effect and the heat value of the garbage entering the furnace are improved, the stable operation of the garbage incineration furnace in winter is ensured, the operation cost is reduced, and the environmental protection risk is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure schematic view of the garbage bin heating system for the domestic waste incineration plant is provided for the embodiments of the utility model;

[0024] Figure 2 The structure schematic view of the garbage bin heating system for the domestic waste incineration plant is provided for the embodiments of the utility model; Figure 1 The structure schematic view of the garbage bin heating system for the domestic waste incineration plant is provided for the embodiments of the utility model;

[0025] In the figure: 1, garbage bin; 2, steam warm air machine; 201, shell; 202, air inlet; 203, heat exchanger; 204, fan; 205, air outlet pipe; 3, medium-pressure steam pipe; 4, steam turbine first-stage extraction; 5, steam warm air machine steam supply pipe; 6, low-pressure steam pipe; 7, water preparation workshop heating main pipe; 8, low-pressure steam supply pipe; 9, steam turbine second-stage extraction; 10, steam inlet pipe; 11, water outlet pipe; 12, backwater pipe; 13, first row of trench pipe; 14, drain tank; 15, drain pipe; 16, drain pump; 17, deaerator; 18, check valve; 19, bypass manual door; 20, first manual primary door; 21, pressure regulating valve; 22, first manual secondary door; 23, manual total door; 24, manual door; 25, second row of trench pipe; 26, third manual primary door; 27, fourth manual secondary door; 28, fifth manual primary door; 29, sixth manual secondary door; 30, steam inlet manual door; 31, backwater manual door; 32, seventh manual primary door; 33, eighth manual secondary door; 34, ninth manual primary door; 35, tenth manual secondary door; 36, inlet manual door; 37, outlet manual door; 38, eleventh manual primary door; 39, twelfth manual secondary door; 40, steam supply manual door. DETAILED DESCRIPTION

[0026] Clearly and completely describe the technical scheme in the embodiments of the utility model in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, and not all the embodiments.

[0027] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two;The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The indicated device or element must have a specific orientation, a specific orientation and operation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] Embodiment:

[0030] As shown in Figures 1-2 A waste storage heating system for household waste incineration plant, including waste storage 1, the upper end of waste storage 1 is provided with seven steam air heaters 2.

[0031] The first heat source supply branch includes a medium-pressure steam pipe 3;One end of the medium-pressure steam pipe 3 is connected in communication with the steam turbine first-stage extraction 4, and the other end of the medium-pressure steam pipe 3 is connected in communication with the steam air heater steam supply pipe 5.

[0032] The second heat source supply branch includes a low-pressure steam pipe 6, a water treatment plant heating main pipe 7 and a low-pressure steam supply pipe 8;One end of the low-pressure steam pipe 6 is connected in communication with the steam turbine second-stage extraction 9, and the other end of the low-pressure steam pipe 6 is connected in communication with the water treatment plant heating main pipe 7;The water treatment plant heating main pipe 7 and the low-pressure steam supply pipe 8 are connected in communication;The low-pressure steam supply pipe 8 and the air heater 204 steam supply pipe are connected in communication;The air heater 204 steam supply pipe and seven steam inlet pipes 10 are connected in communication;Seven steam inlet pipes 10 are connected in communication with the heat source inlets of seven steam air heaters 2 respectively.

[0033] The water treatment plant heating main pipe 7 is a desalted water treatment plant heating main pipe 7.

[0034] Each steam air heater 2 comprises a shell 201, an air inlet 202, a heat exchanger 203, a fan 204, and an air outlet pipe 205.

[0035] The inside of the shell 201 is sequentially fixed with the fan 204 and the heat exchanger 203 from top to bottom; a containing space is left between the fan 204 and the inner upper wall of the shell 201; the air inlet 202 is provided in the middle of the upper wall of the shell 201.

[0036] The heat exchanger 203 comprises a frame, heat exchange pipes, and heat dissipation fins; the frame is fixed with a plurality of heat dissipation fins inside; the heat exchange pipes are fixed in the heat dissipation fins; the heat exchange pipes are serpentine. The inlet of the heat exchange pipes is the heat source inlet of the steam air heater 2; the inlet of the heat exchange pipes of each steam air heater 2 is connected with one steam inlet pipe 10, and the outlet of the heat exchange pipes of each steam air heater 2 is connected with a water return branch. The steam transfers heat to the heat exchange pipes, the heat exchange pipes transfer heat to the heat dissipation fins, when the air enters from the air inlet 202, the air is heated after passing through the heat dissipation fins, the heated air enters the inside of the garbage bin 1 through the air outlet pipe 205, thereby heating the garbage bin 1, and the steam exchanges heat through the heat exchanger to form condensed water, which is transferred to the water return pipe.

[0037] The heat source outlet is provided on the outer wall of the shell 201; the heat source outlet is below the heat exchanger 203; the heat source outlet is connected with the air outlet pipe 205; the air outlet pipe 205 extends into the inside of the garbage bin 1.

[0038] The water return branch comprises a water return pipe 12, a first drainage ditch pipe 13, a drain tank 14, drain pipes 15, and a deaerator 17.

[0039] The outlet of the heat exchange pipes of each steam air heater 2 is connected with one water outlet pipe 11; the seven water outlet pipes 11 are connected with the water return pipe 12; the water return pipe 12 is connected with the first drainage ditch pipe 13; the water return pipe 12 is connected with the inlet of the drain tank 14; the outlet of the drain tank 14 is connected with two drain pipes 15; the two drain pipes 15 are respectively provided with drain pumps 16; the two drain pipes 15 are connected with the inlet of the deaerator 17 through pipes.

[0040] The pipeline between the steam turbine first-stage extraction steam 4 and the medium-pressure steam pipe 3 is provided with a check valve 18 and a bypass manual door 19; the pipeline between the steam turbine second-stage extraction steam 9 and the low-pressure steam pipe 6 is provided with a check valve 18 and a bypass manual door 19; the water preparation plant heating main pipe 7 located between the low-pressure steam pipe 6 and the low-pressure steam supply pipe 8 is provided with a manual main door 23; the water preparation plant heating main pipe 7 located between the low-pressure steam supply pipe 8 and the water preparation plant is provided with a manual door 24; the water preparation plant heating main pipe 7 is also connected with a second drainage ditch pipe 25; the second drainage ditch pipe 25 is provided with a third manual primary door 26 and a fourth manual secondary door 27.

[0041] The low-pressure steam supply pipe 8 is provided with a steam supply manual door 40 and a check valve 18.

[0042] The medium-pressure steam pipe 3 is sequentially provided with a first manual primary door 20, a pressure regulating valve 21 and a first manual secondary door 22.

[0043] The steam air heater steam supply pipe 5 is provided with a fifth manual primary door 28 and a sixth manual secondary door 29.

[0044] Each steam inlet pipe 10 is provided with a steam inlet manual door 30; and each water outlet pipe 11 is provided with a water return manual door 31.

[0045] The water return pipe 12 is provided with a seventh manual primary door 32 and an eighth manual secondary door 33; and the first drainage ditch pipe 13 is provided with a ninth manual primary door 34 and a tenth manual secondary door 35.

[0046] Each drain pipe 15 is provided with an inlet manual door 36, an outlet manual door 37 and a check valve 18; and the pipeline between the drain pipe 15 and the deaerator 17 is provided with an eleventh manual primary door 38 and a twelfth manual secondary door 39.

[0047] The working principle is as follows:

[0048] The garbage bin heating is used in winter and does not need to be put into use in summer; due to the different temperatures and pressures of the two steam supply paths, the garbage bin heating is switched according to the temperature of the garbage bin in winter, and one path is used as a backup.

[0049] The steam turbine second-stage extraction steam is used to heat the garbage bin in northern areas in winter; the second-stage extraction steam has a low temperature and pressure and can meet the garbage fermentation temperature, improving the economy of the steam turbine; when the ambient temperature drops below zero, the second-stage extraction steam cannot meet the garbage fermentation temperature, and the steam turbine first-stage extraction steam is switched to improve the garbage bin temperature and promote garbage fermentation.

[0050] The heat sources of the steam air heaters 2 come from the first heat source supply branch and the second heat source supply branch.

[0051] The first heat source supply branch is used as a backup, and the garbage bin temperature can be selected and switched in winter.

[0052] The first heat source supply branch: the heat source is selected as the first stage steam extraction of a steam turbine, the steam temperature is 250 DEG C, the pressure is 0.9 MPa, a low-pressure steam pipe 6 is connected to seven steam air heaters 2 through a pressure regulating valve 21 after adjusting the pressure of the medium-pressure steam pipe 3, and the warm air is introduced into the garbage bin 1 through an air outlet pipe 205.

[0053] The second heat source supply branch: the heat source is the second stage steam extraction with a temperature of 150 DEG C and a pressure of 0.35 MPa, a low-pressure steam pipe 6 is connected to seven steam air heaters 2 from a water heating main pipe 7 of a water heating workshop.

[0054] Air is introduced into an air inlet 202, heat exchange is carried out through the heat exchanger of the steam air heater 2, under the drive of a fan 204, the warm air formed by the temperature rising air is introduced into the interior of the garbage bin 1 through the air outlet pipe 205, and the garbage bin 1 is heated.

[0055] The steam is subjected to heat exchange through the heat exchanger, and forms condensed water, the condensed water is transported to a return water pipe 12, the return water pipe 12 is transported to a drain tank 14, and then is recovered to a deaerator 17.

[0056] The garbage bin 1 is heated by the steam air heaters 2 arranged above, the suitable temperature of the garbage bin is ensured, the garbage fermentation effect and the heat value of the garbage entering the furnace are improved, the stable operation of the garbage incinerator in winter is ensured, the operation cost is reduced, and the environmental protection risk is avoided.

[0057] The above is only a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A waste bin heating system for a household waste incineration plant, comprising a waste bin (1), characterized in that, The upper end of the garbage bin (1) is provided with several steam warm air machines (2); the heat source inlet of each steam warm air machine (2) is connected with a first heat source supply branch and a second heat source supply branch; the heat source outlet of each steam warm air machine (2) is in communication connection with the inside of the garbage bin (1); The first heat source supply branch comprises a medium pressure steam pipe (3); one end of the medium pressure steam pipe (3) is in communication connection with a steam turbine first stage extraction (4), and the other end of the medium pressure steam pipe (3) is in communication connection with a steam warm air machine steam supply pipe (5); the second heat source supply branch comprises a low pressure steam pipe (6), a water making workshop heating main pipe (7) and a low pressure steam supply pipe (8); one end of the low pressure steam pipe (6) is in communication connection with a steam turbine second stage extraction (9), and the other end of the low pressure steam pipe (6) is in communication connection with the water making workshop heating main pipe (7); the water making workshop heating main pipe (7) is in communication connection with the low pressure steam supply pipe (8); the low pressure steam supply pipe (8) is in communication connection with a warm air machine (204) steam supply pipe; the warm air machine (204) steam supply pipe is in communication connection with several steam inlet pipes (10); the several steam inlet pipes (10) are in one-to-one communication connection with the heat source inlets of the several steam warm air machines (2) respectively; The water making workshop heating main pipe (7) is provided with a manual total door (23) on the pipeline between the low pressure steam pipe (6) and the low pressure steam supply pipe (8); the medium pressure steam pipe (3) is sequentially provided with a first manual primary door (20), a pressure regulating valve (21) and a first manual secondary door (22).

2. The waste bin heating system for a household waste incineration plant according to claim 1, characterized in that, Each steam warm air machine (2) comprises an outer shell (201), an air inlet (202), a heat exchanger (203), a warm air machine (204) and an air outlet pipe (205); The inside of the outer shell (201) is sequentially fixed with the warm air machine (204) and the heat exchanger (203) from top to bottom; a containing space is left between the warm air machine (204) and the inner upper wall of the outer shell (201); the upper wall of the outer shell (201) is provided with the air inlet (202) penetratingly formed in the middle part thereof; The heat exchanger (203) comprises a frame, heat exchange pipes and heat dissipation fins; the inside of the frame is fixed with several heat dissipation fins; the heat exchange pipes are fixed in the several heat dissipation fins; the inlets of the heat exchange pipes are the heat source inlets of the steam warm air machines (2); the inlet of the heat exchange pipe of each steam warm air machine (2) is in communication connection with a steam inlet pipe (10), and the outlet of the heat exchange pipe of each steam warm air machine (2) is in connection with a backwater branch; The outer wall of the outer shell (201) is provided with a heat source outlet; the heat source outlet is below the heat exchanger (203); the heat source outlet is in communication connection with the air outlet pipe (205); the air outlet pipe (205) extends into the inside of the garbage bin (1).

3. The waste bin heating system for a household waste incineration plant according to claim 2, characterized in that, The heat exchange pipes are serpentine.

4. The waste bin heating system for a household waste incineration plant according to claim 2, characterized in that, The backwater branch comprises a backwater pipe (12), a first drainage ditch pipe (13), a drain tank (14), a drain pipe (15) and a deaerator (17); The outlet of the heat exchange pipe of each steam air heater (2) is connected with a water outlet pipe (11) respectively; all the water outlet pipes (11) are connected with a water return pipe (12); the water return pipe (12) is connected with a first ground ditch pipe (13); the water return pipe (12) is connected with the inlet of a drain tank (14); the outlet of the drain tank (14) is connected with two drain pipes (15) respectively; a drain pump (16) is arranged on each of the two drain pipes (15); the two drain pipes (15) are connected with the inlet of a deaerator (17) through pipes.

5. The waste bin heating system for a household waste incineration plant according to claim 4, characterized in that, A check valve (18) and a bypass hand valve (19) are arranged on the pipeline between the first stage steam extraction (4) of the steam turbine and the medium pressure steam pipe (3); a check valve (18) and a bypass hand valve (19) are arranged on the pipeline between the second stage steam extraction (9) of the steam turbine and the low pressure steam pipe (6); a hand valve (24) is arranged on the pipeline between the low pressure steam supply pipe (8) and the water making plant of the water making plant heating main pipe (7); the water making plant heating main pipe (7) is also connected with a second ground ditch pipe (25); a third hand valve (26) and a fourth hand valve (27) are arranged on the second ground ditch pipe (25); A steam supply hand valve (40) and a check valve (18) are arranged on the low pressure steam supply pipe (8); A fifth hand valve (28) and a sixth hand valve (29) are arranged on the steam air heater steam supply pipe (5); An inlet steam hand valve (30) is arranged on each of the inlet steam pipes (10); a return water hand valve (31) is arranged on each of the water outlet pipes (11); A seventh hand valve (32) and an eighth hand valve (33) are arranged on the water return pipe (12); a ninth hand valve (34) and a tenth hand valve (35) are arranged on the first ground ditch pipe (13); An inlet hand valve (36), an outlet hand valve (37) and a check valve (18) are arranged on each of the drain pipes (15); an eleventh hand valve (38) and a twelfth hand valve (39) are arranged on the pipeline between the drain pipe (15) and the deaerator (17). An inlet hand valve (36), an outlet hand valve (37) and a check valve (18) are arranged on each of the drain pipes (15); an eleventh hand valve (38) and a twelfth hand valve (39) are arranged on the pipeline between the drain pipe (15) and the deaerator (17).

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