Industrial silicon smelting flue gas waste heat power generation device

Abstract

The utility model discloses a kind of industrial silicon smelting flue gas waste heat power generation devices no longer use the dust bag commonly used in prior art, separation assembly is set at the flue gas pipeline of smelting furnace, separation assembly sets two groups, can be rotated to upper and lower two separation assemblies by transmission mechanism, after a period of use, start transmission mechanism to rotate separation assembly, clean the rotated separation assembly, replace separation assembly is installed on flue gas pipeline to continue separating smoke dust.This setting can separate high-temperature smoke dust to make flue gas waste heat can generate electricity and be reused, and can reduce the efficiency of flue gas waste heat power generation device when separating smoke dust is cleaned.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of flue gas waste heat power generation, especially relates to an industrial silicon smelting flue gas waste heat power generation device. BACKGROUND

[0002] In prior art, when the industrial silicon smelting flue gas system is running, the dust-containing flue gas is introduced to the natural air cooler through the air pipe, the flue gas temperature is cooled from high temperature to below 200 DEG C, and then enters the cyclone dust collector to remove the large particle dust and spark carbon particles in the flue gas to prevent the bag filter from being burnt out.

[0003] This way can only remove dust, but cannot utilize the waste heat of the flue gas at the same time, if the high-temperature flue gas of the industrial silicon smelting furnace is utilized to generate power through the waste heat boiler, the high-temperature flue gas will not be cooled through the air cooler, so the flue gas temperature rises sharply, and the bag filter will be burnt out instantaneously, and the industrial silicon smelting flue gas contains a large amount of dust, and the dust is fine, which can cause the waste heat boiler to be fouled, the dust to be accumulated on the bag of the dust collector, and the dust to be accumulated in many places; the fouling of the waste heat boiler can affect the heat exchange efficiency of the waste heat boiler, and make the flue gas temperature rise, and the fouling of the waste heat boiler can cause the flue gas to scour, wear and even grind the tube, and cause the boiler to stop production and other production accidents, thereby affecting the normal operation of the whole production system. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a kind of industrial silicon smelting flue gas waste heat power generation devices, to solve the problem that the industrial silicon smelting flue gas system in prior art cannot remove dust at the same time while considering waste heat utilization, and dust-removing component is prone to dust accumulation.

[0005] To solve the above technical problem, the utility model adopts the following technical scheme to realize:

[0006] A kind of industrial silicon smelting flue gas waste heat power generation device, including smelting furnace, the gas inlet of the smelting furnace is communicated with the one end of exhaust pipe by exhaust motor, the other end of the exhaust pipe is communicated to the output end of waste heat power generation device, the input end of the waste heat power generation device is communicated with the one end of flue gas duct, the other end of the flue gas duct is communicated to the gas outlet of smelting furnace;

[0007] Separation component is arranged on the flue gas duct;The separation component includes the first installation pipe and the second installation pipe of same structure;The first installation pipe is matched with the specification of flue gas duct, separation filter screen is installed in the inner ring of the first installation pipe and the second installation pipe;

[0008] The flue gas duct is divided in the middle, and forms partition area;The first installation pipe can be sealedly installed into the partition area of flue gas duct;

[0009] The first installation pipe is connected with the second installation pipe through a connecting plate, a connecting shaft is vertically connected to the middle of the connecting plate, and the connecting shaft can drive the first installation pipe and the second installation pipe to respectively enter or leave the partition area in the middle of the flue gas pipe through rotation of the connecting shaft.

[0010] The utility model also has the following characteristics:

[0011] Further, the connecting shaft of the separation assembly is rotatably installed on the support frame.

[0012] A first transmission gear is fixedly arranged on the connecting shaft, and a transmission motor is arranged on the support frame.

[0013] A second transmission gear is arranged on the output shaft of the transmission motor, and the first transmission gear is engaged with the second transmission gear.

[0014] Further, the separation filter screen comprises a first separation filter screen and a second separation filter screen.

[0015] The first separation filter screen is close to the waste heat power generation device, and the aperture of the first separation filter screen is smaller than that of the second separation filter screen.

[0016] Further, the utility model also comprises a sealing assembly.

[0017] The sealing assembly comprises a pair of sealing rings, and the sealing rings can respectively cover the connection between the first installation pipe and the flue gas pipe.

[0018] Further, a pair of sealing rings are arranged on the first installation pipe or the second installation pipe.

[0019] The sealing ring comprises a concentric sealing outer ring and a sealing inner ring, the inner diameter of the sealing outer ring matches the outer diameter of the flue gas pipe, and the outer diameter of the sealing inner ring matches the inner diameter of the flue gas pipe.

[0020] Sliding grooves extending in the axial direction are arranged on both sides of the inner wall and the outer wall of the first installation pipe, sliding blocks corresponding to the sliding grooves are arranged on the sealing outer ring and the sealing inner ring, and the sealing outer ring and the sealing inner ring are slidably connected to the first installation pipe through the sliding blocks.

[0021] The sealing outer ring and the sealing inner ring can cover the connection between the first installation pipe and the partition area of the flue gas pipe through sliding on the first installation pipe.

[0022] Further, a pair of mirror-symmetrical fixing rings are arranged, the fixing rings have the same specification as the sealing outer ring, and the fixing rings are installed on the flue gas pipe and located on both sides of the sealing outer ring.

[0023] The fixed ring is formed by two half rings, and an ear plate with a connecting hole is arranged on the outer wall of the joint of the two half rings.

[0024] The opposite sides of the pair of fixed rings extend to the flue gas pipeline partition area to form ring grooves, and the fixed ring can be tightly sealed by the ring grooves

[0025] Compared with the prior art, the industrial silicon smelting flue gas waste heat power generation device has the following technical effects:

[0026] (I) The industrial silicon smelting flue gas waste heat power generation device of the utility model no longer uses the dust bag commonly used in the prior art, and a separation assembly is arranged at the flue gas pipeline of the smelting furnace, two groups of separation assemblies are arranged, the upper and lower separation assemblies can be rotated through a transmission mechanism, after a period of use, the transmission mechanism is started to rotate the separation assembly, the rotated separation assembly is cleaned, and the replaced separation assembly is installed on the flue gas pipeline to continue separating the smoke dust. Through the arrangement, the high-temperature smoke dust can be separated to make the flue gas waste heat be reused, and the efficiency of the flue gas waste heat power generation device is affected when the separated smoke dust is cleaned.

[0027] (II) The industrial silicon smelting flue gas waste heat power generation device of the utility model is provided with a multistage sealing fixing device at the connection between the separation assembly and the flue gas pipeline, the sealing property and the reliability of the device are further improved, and the device is suitable for large-scale use and popularization in industry. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a whole structure schematic view of the industrial silicon smelting flue gas waste heat power generation device of the utility model;

[0029] Figure 2 is a cross-sectional structure schematic view of the connection between the flue gas pipeline and the separation assembly in the utility model.

[0030] The meanings of the reference numbers in the drawing are as follows:

[0031] 1, smelting furnace; 2, exhaust motor; 3, exhaust pipe; 4, waste heat power generation device; 5, flue gas pipeline; 6, first mounting pipe; 7, second mounting pipe; 8, separation filter screen; 9, connecting plate; 10, connecting shaft; 11, support frame; 12, first transmission gear; 13, transmission motor; 14, sealing ring; 1401, sealing outer ring; 1402, sealing inner ring; 15, fixed ring; 16, ear plate; 17, second transmission gear. DETAILED DESCRIPTION

[0032] It should be noted that all the components in the utility model are known components in the prior art, for example, the waste heat power generation device is a known waste heat power generation device.

[0033] The following gives specific embodiments of the present application, and it should be noted that the present application is not limited to the following specific embodiments, and any equivalent transformations made on the basis of the technical solutions of the present application fall within the protection scope of the present application.

[0034] As shown in Figure 1 and 2 An industrial silicon smelting flue gas waste heat power generation device, comprising a smelting furnace 1, the gas inlet of the smelting furnace 1 is communicated with one end of the exhaust pipe 3 through the exhaust motor 2, the other end of the exhaust pipe 3 is communicated to the output end of the waste heat power generation device 4, the input end of the waste heat power generation device 4 is communicated with one end of the flue gas pipeline 5, and the other end of the flue gas pipeline 5 is communicated to the gas outlet of the smelting furnace 1;

[0035] The flue gas pipeline 5 is provided with a separation assembly; the separation assembly comprises a first mounting pipe 6 and a second mounting pipe 7 which are identical in structure;

[0036] The first mounting pipe 6 is matched with the specification of the flue gas pipeline 5, and the inner circle of the first mounting pipe 6 and the second mounting pipe 7 is provided with a separation filter screen 8;

[0037] The middle part of the flue gas pipeline 5 is partitioned, and the first mounting pipe 6 can be sealingly installed into the partitioned area in the middle part of the flue gas pipeline 5;

[0038] The first mounting pipe 6 is connected with the second mounting pipe 7 through the connecting plate 9, the connecting plate 9 is vertically connected with the connecting shaft 10 in the middle part, and the connecting shaft 10 can drive the first mounting pipe 6 and the second mounting pipe 7 to enter or leave the partitioned area in the middle part of the flue gas pipeline 5 through rotation of the connecting shaft 10.

[0039] The industrial silicon smelting flue gas waste heat power generation device of the present application no longer uses the dust removal bag commonly used in the prior art, and the separation assembly is arranged at the flue gas pipeline 4 of the smelting furnace 1, the separation assembly is divided into the first mounting pipe 6 and the second mounting pipe 7, the first mounting pipe 6 and the second mounting pipe 7 can be rotated through the connecting shaft 10, after a period of use, the connecting shaft 10 is started to rotate the separation assembly, the rotated separation assembly is cleaned, and the replaced separation assembly is installed on the flue gas pipeline 5 to continue separating the dust. This arrangement can separate the high-temperature dust to make the flue gas waste heat available for power generation and reuse, and can reduce the influence of the separated dust on the efficiency of the flue gas waste heat power generation device during cleaning.

[0040] As a preferred scheme, the connecting shaft 10 of the separation assembly is rotatably installed on the support frame 11;

[0041] The connecting shaft 10 is provided with a first transmission gear 12, the support frame 11 is provided with a transmission motor 13, the output shaft of the transmission motor 13 is provided with a second transmission gear 17, and the first transmission gear 12 is engaged with the second transmission gear 17. This kind of setting realizes the automatic rotation of the separated components while improving the connecting strength.

[0042] As a preferred solution, the separation filter screen 8 comprises a first separation filter screen and a second separation filter screen;

[0043] The first separation filter screen is close to the waste heat power generation device 4, and the aperture of the first separation filter screen is smaller than that of the second separation filter screen.

[0044] In this solution, the separation filter screen 8 can be made of fine steel mesh with high temperature resistance according to conventional selection, so as to reduce the possibility that the hot gas will reduce the temperature by contacting with steel materials and the like.

[0045] The first separation filter screen close to the waste heat power generation device 4 has a smaller pore density than the second separation filter screen away from the waste heat power generation device 4, so as to isolate the particles in the flue dust and make the hot gas enter the power generation set to generate power.

[0046] As a preferred solution, the sealing assembly is further included;

[0047] The sealing assembly comprises a pair of sealing rings 14, which can cover the connection between the first mounting pipe 6 or the second mounting pipe 7 and the flue gas pipeline 5, respectively.

[0048] Further preferably, the first mounting pipe 6 or the second mounting pipe 7 is provided with a pair of sealing rings 14, and the sealing ring 14 comprises a concentric sealing outer ring 1401 and a sealing inner ring 1402;

[0049] The inner diameter of the sealing outer ring 1401 matches the outer diameter of the flue gas pipeline 5, and the outer diameter of the sealing inner ring 1402 matches the inner diameter of the flue gas pipeline 5;

[0050] The inner wall and the outer wall of the first mounting pipe 6 are both provided with sliding grooves extending in the axial direction, and the sealing outer ring 1401 and the sealing inner ring 1402 are both provided with sliding blocks corresponding to the sliding grooves;

[0051] The sealing outer ring 1401 and the sealing inner ring 1402 are slidably connected to the first mounting pipe 6 through the sliding blocks thereof;

[0052] The sealing outer ring 1401 and the sealing inner ring 1402 can cover the connection between the first mounting pipe 6 and the flue gas pipeline 5 by sliding on the first mounting pipe 6. While ensuring the sealing, the convenience during use is improved.

[0053] As a preferred solution, a pair of mirror-symmetrical fixing rings 15 are further included, the fixing rings 15 are of the same specification as the sealing outer ring 1401, and the pair of fixing rings 15 are both mounted on the flue gas pipeline 5 and located at two sides of the sealing outer ring 1401 respectively;

[0054] The fixing ring 15 is formed by butting two half rings, and an ear plate 16 with a connecting hole is arranged on the outer wall of the butt joint of the two half rings;

[0055] The opposite sides of the pair of fixing rings 15 respectively extend to the partition area of the flue gas pipeline 5 to form ring grooves, and the fixing ring 15 can press the sealing outer ring 1401 through the ring grooves thereof;

[0056] The ear plate 16 extends to the partition area of the flue gas pipeline 5 to form a ring groove, and the fixing ring 15 can press the sealing outer ring 1401 through the ring groove of the ear plate 16, thereby improving the stability of the installation of the sealing outer ring 1401 on the flue gas pipeline 5.

[0057] In use, the left and right ends of the first mounting pipe 6 and the second mounting pipe 7 are respectively provided with a sealing ring 14, which can simultaneously slide inward or outward; when sliding inward, the transverse distance between the first mounting pipe 6 and the sealing ring 14 is less than or equal to the distance between the flue gas pipeline 5 and the separation assembly.

[0058] When rotating the separation assembly, the corresponding sealing outer ring 1401 and sealing inner ring 1402 are both slid inward, at this time, the sliding groove on the first mounting pipe 6 is in a blocked state, and when the first mounting pipe 6 is rotated to be coaxial with the flue gas pipeline 5, the sealing outer ring 1401 and the sealing inner ring 1402 are moved outward to expose the sliding groove, and at the same time, the flue gas pipeline 5 is located in the gap formed between the two concentric rings, and finally the first mounting pipe 6 is fixed by the fixing ring 15 to complete the fixation of the whole separation assembly.

Claims

1. A device for power generation from the waste heat of industrial silicon smelting off-gas, characterized in that, It includes smelting furnace (1), the air inlet of smelting furnace (1) is communicated with one end of exhaust pipe (3) by exhaust motor (2), the other end of exhaust pipe (3) is communicated to the output end of waste heat power generation device (4), the input end of waste heat power generation device (4) is communicated with one end of flue gas pipeline (5), the other end of flue gas pipeline (5) is communicated to the air outlet of smelting furnace (1); The flue gas pipeline (5) is provided with a separation assembly;The separation assembly includes a first mounting pipe (6) and a second mounting pipe (7) with the same structure;The first mounting pipe (6) matches the size of the flue gas pipeline (5), and the first mounting pipe (6) and the second mounting pipe (7) are both provided with a separation filter screen (8) on the inner ring; The middle part of the flue gas pipeline (5) is separated to form a separation area;The first mounting pipe (6) can be sealed and installed into the separation area of the flue gas pipeline (5); The first mounting pipe (6) is connected with the second mounting pipe (7) through a connecting plate (9), the middle part of the connecting plate (9) is vertically connected with a connecting shaft (10), and the connecting shaft (10) can drive the first mounting pipe (6) and the second mounting pipe (7) to enter or leave the separation area in the middle part of the flue gas pipeline (5) by rotating itself.

2. The industrial silicon smelting off-gas waste heat power generation device according to claim 1, characterized in that, The connecting shaft (10) of the separation assembly is rotatably installed on a support frame (11); A first transmission gear (12) is fixedly arranged on the connecting shaft (10), and a transmission motor (13) is arranged on the support frame (11); A second transmission gear (17) is arranged on the output shaft of the transmission motor (13), and the first transmission gear (12) is engaged with the second transmission gear (17).

3. The industrial silicon smelting off-gas waste heat power generation device according to claim 1, characterized in that, The separation filter screen (8) includes a first separation filter screen and a second separation filter screen; The first separation filter screen is close to the waste heat power generation device (4), and the aperture of the first separation filter screen is smaller than that of the second separation filter screen.

4. The industrial silicon smelting off-gas waste heat power generation device according to claim 1, characterized in that, It also includes a sealing assembly; The sealing assembly includes a pair of sealing rings (14), and the pair of sealing rings (14) can cover the connection between the first mounting pipe (6) and the flue gas pipeline (5) respectively.

5. The industrial silicon smelting off-gas waste heat power generation device according to claim 2, characterized in that, A pair of sealing rings (14) are arranged on the first mounting pipe (6) or the second mounting pipe (7); The sealing ring (14) includes a concentric sealing outer ring (1401) and a sealing inner ring (1402), the inner diameter of the sealing outer ring (1401) matches the outer diameter of the flue gas pipeline (5), and the outer diameter of the sealing inner ring (1402) matches the inner diameter of the flue gas pipeline (5); The inner wall and the outer wall of the first mounting pipe (6) are both provided with a sliding groove extending in the axial direction, and the sealing outer ring (1401) and the sealing inner ring (1402) are both provided with a sliding block corresponding to the sliding groove;The sealing outer ring (1401) and the sealing inner ring (1402) are slidably connected to the first mounting pipe (6) by the sliding blocks; The sealing outer ring (1401) and the sealing inner ring (1402) can cover the connection between the first mounting pipe (6) and the separation area of the flue gas pipeline (5) by sliding on the first mounting pipe (6).

6. The industrial silicon smelting off-gas waste heat power generation device according to claim 5, characterized in that, Also included are a pair of mirror-symmetrical fixing rings (15) which have the same specifications as the outer sealing ring (1401), and the pair of fixing rings (15) are both installed on the flue gas pipeline (5) and are located on the two sides of the outer sealing ring (1401) respectively; The fixing ring (15) is formed by two half rings which are connected at the outer wall of the connecting position of the two half rings and are provided with an ear plate (16) with a connecting hole; The opposite sides of the pair of fixing rings (15) extend to the partition area of the flue gas pipeline (5) to form a ring groove, and the fixing ring (15) can press and seal the outer sealing ring (1401) through the ring groove.

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