CN211451997U - Horizontal heat storage bin - Google Patents

Abstract

The utility model discloses a horizontal heat-retaining storehouse, horizontal heat-retaining storehouse includes: the heat storage device is horizontally arranged, and two ends of the heat storage device are respectively provided with an opening for gas to enter and exit and a channel for gas to flow; a plurality of dust exhaust apparatus arranges the setting in proper order in heat-retaining device's bottom, and every dust exhaust apparatus includes: the ash hopper is a hollow cylinder converging to the bottom, is arranged at the bottom of the heat storage device and is used for collecting dust carried in the gas for heat exchange; an ash discharge valve is arranged at the bottom of the ash bucket. The problem of current gas heat-retaining equipment when carrying out the heat-retaining to dusty flue gas, easily cause the heat-retaining device to block up is solved.

Description

Horizontal heat storage bin

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of the heat-retaining device, concretely relates to horizontal heat storage storehouse.

[ background of the invention ]

The large-scale access of the fluctuating renewable energy to the power grid provides possibility for utilizing the heat storage peak shaving of the existing waste heat power station, the heat storage equipment is of great importance to the whole system, and the heat source of the waste heat power station is mostly smoke with large dust content. Existing gas heat storage devices mainly include heat accumulating hot blast stoves, heat accumulating burners, electric heat storage devices and heat storage devices in Combined Cycle Gas Turbine (CCGT) power plants.

The existing heat accumulating type hot blast stove is used for hundreds of years in the steel industry and is used for improving the temperature of preheated air, but the existing heat accumulating type hot blast stove uses clean blast furnace gas combustion flue gas as a heat source and cannot be used in a heat accumulation scene of dust-containing flue gas. Although the existing heat accumulating type combustor is a gas heat accumulation device, the existing heat accumulating type combustor can only be used in relatively clean gas or flue gas, and is not suitable for the flue gas generated in a cement kiln, in addition, the reversing period of a heat accumulating unit in the heat accumulating type combustor is 20-300s, the reversing period is too short, the difference between the reversing period and the peak regulation requirement of 8h heat accumulation products is large, and dust cannot be discharged. The existing electric heat storage products directly heat storage materials by using electric heating wires, the temperature of a heat source can reach 1000 ℃, hot air or hot water is generated when heat is released and is lower than 100 ℃, the available temperature difference of the materials is large, heat storage and release are easy to realize, the average smoke temperature during heat charging is usually required to be 380 ℃ and the minimum heat release temperature is 300 ℃ in the existing heat storage equipment for waste heat peak regulation, the realization difficulty is large due to small temperature difference, and the high-temperature air source is clean air and is not suitable for a cement kiln power station. In an existing Combined Cycle Gas Turbine (CCGT) power plant, a heat storage system is added to decouple electricity and heat, and when the demand for electricity is high, the excess heat is stored in a TES system. Then, when the power demand is low, the heat energy generated by the TES is used for generating steam through the boiler to supply to the user. The heat storage device mainly comprises a heat storage material, a heat insulation material and a storage container, theoretical and experimental tests are carried out on a test platform of German Stuttgart DLR, and the fact that waste heat peak shaving can be realized is proved, but the device still cannot realize the dust exhaust function and cannot be used in a cement kiln with large dust content. Aiming at the waste heat power station with an unlimited partial site, a flue gas heat storage device which is lower in height, convenient to install and maintain and suitable for containing dust needs to be developed.

[ Utility model ] content

The utility model aims at providing a horizontal heat storage storehouse to when solving current gaseous heat-retaining equipment and carrying out the heat-retaining to dusty flue gas, easily cause the problem that the heat-retaining device blockked up.

The utility model adopts the following technical scheme: horizontal heat storage bin includes:

the heat storage device is horizontally arranged, and two ends of the heat storage device are respectively provided with an opening for gas to enter and exit and a channel for gas to flow;

a plurality of dust exhaust apparatus arranges the setting in proper order in heat-retaining device's bottom, and every dust exhaust apparatus includes:

the ash hopper is a hollow cylinder converging to the bottom, is arranged at the bottom of the heat storage device and is used for collecting dust carried in the gas for heat exchange;

an ash discharge valve is arranged at the bottom of the ash bucket.

Further, the heat storage device includes:

the shell is a hollow cavity which is horizontally arranged, and the top of the shell is detachably connected with an upper top cover;

the heat storage units are uniformly arranged in the shell.

Furthermore, a plurality of partition plates are vertically arranged in the ash bucket at intervals, and a gap is reserved between the bottom end of each partition plate and the inner wall of the ash bucket.

Furthermore, the ash discharge valve is a rotary ash discharge valve or a gravity ash discharge valve.

The utility model has the advantages that: the horizontal heat storage bin of the utility model can be suitable for a dust-containing smoke heat storage device, in particular to a cement kiln and a steel production line with larger dust content, is easy to discharge dust and can not be blocked; the commutation period is too short; the realization is easy; the heat storage body can be formed by pouring concrete, so that the cost is low; the horizontal structure is low in height and convenient to install and maintain.

[ description of the drawings ]

FIG. 1 is a schematic structural view of the horizontal heat storage bin of the present invention;

FIG. 2 is a schematic structural view of the heat storage unit in the horizontal heat storage bin of the present invention being a heat storage rod;

fig. 3 is a schematic structural view of the heat storage unit in the horizontal heat storage bin of the present invention being a heat storage plate.

The device comprises a shell 1, a heat storage device 2, a first gas inlet and outlet 3, a second gas inlet and outlet 4, an ash discharge valve 5, an ash hopper 6, a partition plate 7, a heat storage rod 8, a heat storage plate 9 and a top cover 10.

[ detailed description ] embodiments

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The horizontal heat storage bin of the utility model, as shown in fig. 1-3, comprises a heat storage device and a dust exhaust device. The heat storage device 2 is horizontally arranged for providing a passage for gas flow. The two ends of the gas inlet pipe are respectively provided with an opening for gas to enter and exit, and any one is an inlet and the other is an outlet. In practical use, the left opening may be defined as the first gas inlet/outlet 3, and the right opening may be defined as the second gas inlet/outlet 4. The heat storage device includes a case 1 and a heat storage unit provided therein. The shell 1 is a hollow cylinder body which is horizontally arranged, as shown in fig. 2-3, the heat storage unit is made of gas heat exchange materials, the structure of the heat storage unit can be but is not limited to a heat storage rod 8 or a heat storage plate 9, and the heat storage unit is directly connected through a support rod and integrally fixed on the supporting structure or the shell 1.

And the plurality of dust exhaust devices are sequentially arranged at the bottom of the heat storage device 2 and are specifically installed and connected at the bottom of the shell (1). Each dust extraction device comprises a dust hopper 6, which is a downwardly converging hollow cylinder for collecting dust. A plurality of partition plates 7 are vertically and fixedly arranged in the ash bucket 6 at intervals, and a gap is reserved between the bottom end of each partition plate 7 and the inner wall of the ash bucket 6. The partition board with the gap has the effects of ensuring the smooth flow of air, separating and guiding dust contained in the air and enabling the dust to slide down to the dust discharging valve 5 along the partition board. The dust discharging valve 5 can be a rotary dust discharging valve or a gravity dust discharging valve, and when dust needs to be discharged, the dust is discharged through the dust discharging valve 5.

The partition plates 7 ensure that the smoke dust falls to the dust hopper 6 and then falls to the dust discharge 5 along the side walls, and as the partition plates 7 are densely arranged and have smaller intervals, the flow resistance of the dust-containing smoke is larger than that of the heat storage unit, most of the dust-containing smoke flows along the axial direction of the shell 1, and the dust-containing smoke is blocked and settled when flowing through the heat storage unit and falls into the dust hopper 6; a small part of the dust-laden flue gas flows around the inner side of the dust hopper 6. After ash falling occurs, the bottom of the ash bucket 6 is blocked, so that the airflow can only flow along the axial direction of the shell 1, and the dust-containing smoke flows through the heat storage unit and falls into the ash bucket 6.

The utility model provides a use method of horizontal heat storage storehouse, gas is leading-in from first gas access & exit 3, through the heat-retaining unit heat transfer, and through the ash removal of dust exhaust apparatus again, discharge through the gaseous access & exit 4 of second at last. One side opening of the heat storage device 2 is a first gas inlet/outlet 3, and the other side opening is a second gas inlet/outlet 4, and the heat storage method specifically comprises the following steps: high-temperature gas is introduced from the first gas inlet and outlet 3, is gradually cooled into low-temperature gas through the heat storage units in the heat storage device 2, and dust carried in the gas is discharged from the dust exhaust device and finally discharged through the second gas inlet and outlet 4. The heat release method of the horizontal heat storage bin comprises the following specific steps: the low-temperature gas is introduced from the second gas inlet and outlet 4, and is heated into high-temperature gas step by step through the heat storage units in the heat storage device 2, and dust carried in the gas is discharged from the dust exhaust device and finally discharged through the first gas inlet and outlet 3.

Example (b):

a 20MWh heat storage device, the length is 30 meters, and the width and the height are respectively 5 m; the heat storage unit consists of heat storage rods with the diameter of 20cm, and the center distance between the heat storage rods is 25 cm. The partition boards in the ash hopper 6 are spaced by 20 cm. The heat storage device is wrapped by a 50 cm-thick polyurethane heat-insulation and profiled steel plate, and the whole device is suspended and installed on a concrete pillar. In the heat storage process, 500 ℃ flue gas enters from a first gas inlet and outlet 3 on the left side of the heat storage body, is cooled to 100 ℃ through the heat storage body, is discharged to a chimney, and fly ash is collected into an ash hopper 6. In the standing phase, the ash discharge valve 5 is opened, the fly ash is discharged and transported away by a zipper machine, and the ash discharge valve 5 is closed. In the heat release stage, 100 ℃ flue gas enters the heat storage device from the second gas inlet and outlet 4 on the right side, and is gradually heated to about 480 ℃ and discharged to a heat user.

The dust exhaust structure is arranged in the horizontal heat storage bin, so that the horizontal heat storage bin can be suitable for a dust-containing smoke environment, including a cement kiln and a steel production line with large dust content, and cannot be blocked; the horizontal structure of the heat storage device is horizontally arranged, so that the whole equipment is low in height, and the upper cover plate is opened during installation and maintenance, thereby facilitating installation and maintenance.

Claims (4)

1. Horizontal heat storage bin, its characterized in that includes:

the heat storage device (2) is horizontally arranged, and two ends of the heat storage device are respectively provided with an opening for gas to enter and exit and a channel for gas to flow;

a plurality of dust exhaust apparatus arranges the setting in proper order and is in the bottom of heat-retaining device (2), every dust exhaust apparatus includes:

the ash hopper (6) is a hollow cylinder converging to the bottom, is arranged at the bottom of the heat storage device (2), and is used for collecting dust carried in gas for heat exchange;

and the ash discharge valve (5) is arranged at the bottom of the ash bucket (6).

2. The horizontal heat storage silo according to claim 1, characterized in that the heat storage device (2) comprises:

the shell (1) is a hollow cavity body which is horizontally arranged, and the top of the shell is detachably connected with an upper top cover (10);

a plurality of heat storage units uniformly arranged within the housing (1).

3. The horizontal heat storage bin according to claim 1 or 2, wherein a plurality of partition plates (7) are vertically arranged in the ash bucket (6) at intervals, and a gap is reserved between the bottom end of each partition plate (7) and the inner wall of the ash bucket (6).

4. The horizontal heat storage silo according to claim 1 or 2, characterized in that the cinder valve (5) is a rotary cinder valve or a gravity cinder valve.

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