JP2007054775A - Jet burner type crushing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance a working efficiency in continuous crushing in an apparatus in which compression air and a fuel are fed to a cylindrical burner body 11 to ignite/burn them, a combustion gas is injected from a nozzle port 14 of the burner body as a high temperature jet stream of an acoustic velocity or more and an object is crushed by the jet injection stream. <P>SOLUTION: The jet burner type crushing apparatus is provided with the burner body 11 and a crushing treatment tank 12 communicated in a vertical ring shape. The nozzle port 14 of the burner body 11 is provided such that the jet injection stream B is jetted toward the lowermost part of the treatment tank in a direction along a ring at an upper position slightly upper than the lowermost part of the crushing treatment tank. It is constituted by a crushing treatment mechanism part 1 having a wider flow passage cross section area than a ring flow passage at a position where it is deviated in an injection stream direction from the uppermost part of the crushing treatment tank and provided with a branch flow part 13 provided with a discharge connection port at an upper side; a material feeding mechanism part for feeding the object to be crushed to a front side just before the nozzle port of the burner body in the crushing treatment tank; and a separation mechanism part provided with a power separation part and a suction fan connected to the discharge port of the treatment tank. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a jet burner type pulverizer.

  A jet burner type pulverizer supplies compressed air and fuel to a cylindrical burner body and ignites and burns it. The combustion gas is injected from a nozzle of the burner body as a high-temperature jet stream at or above the speed of sound. It is to be crushed.

  As shown in Patent Document 1 (Japanese Patent Laid-Open No. 9-217903), the pulverization treatment tank is composed of an inverted triangular pyramid-shaped sealed chamber, and a jet burner is installed at the top of the sealed chamber. In addition, a carry-in path for the object to be crushed is provided below the burner.

  The pulverization process involves instantly dehydrating and drying the object to be pulverized supplied from the carry-in path by direct exposure to a high-temperature gas body at an ultra-high speed, and at the same time, processing accompanied by the gas body. While the inside of the tank is agitated and scattered, the pulverization progresses by repeating the collision with the side wall of the processing tank and the collision between the processing objects while flying, and the pulverized material is discharged from the upper discharge port along the inner wall of the tank ( The combustion gas that has lost high-temperature, high-speed energy) is discharged outside the tank.

  In addition, the effluent (the pulverized product accompanying the exhaust gas) is separated into the pulverized product and the exhaust gas by a cyclone type gravity collector.

JP-A-9-217903.

  In the jet burner type pulverizer, the treatment tank has an inverted triangular pyramid structure, and the desired fine powder is conveyed outside the treatment tank along with the flow of the exhaust gas. The pulverized product with the appropriate weight sinks in the treatment tank and reaches the burner directly and is pulverized again, but the intermediate is left as it is when the rising flow of the continuously rising exhaust gas is balanced with its own weight. Even if it is in a floating state in the air and sinks due to a slight loss of balance, the upward flow becomes stronger as it goes downward, so that the intermediate repeats vertical movement in the treatment tank.

  That is, depending on the object to be pulverized, if continuous pulverization is repeated, there are many intermediates in the treatment tank, and it is difficult to say that the work efficiency in continuous pulverization is excellent.

  Therefore, the present invention proposes a jet burner pulverizer equipped with a novel treatment tank.

  A jet burner type pulverizing apparatus according to the present invention comprises a burner body and a pulverization processing tank communicating in a vertical ring shape, and supplies compressed air and fuel to ignite and burn, and jets a high-temperature jet flow at or above the speed of sound from a nozzle opening. The burner body is provided at a position slightly above the lowermost part of the pulverization treatment tank so that the jet jet flow from the nozzle port is ejected toward the lowermost part of the treatment tank and along the ring, and the uppermost part of the pulverization treatment tank A pulverization mechanism having a flow passage cross-sectional area wider than the ring flow passage at a position displaced in the jet flow direction and having a discharge connecting port provided above, and a burner body in the pulverization treatment tank It is characterized by comprising a raw material supply mechanism section for supplying an object to be crushed immediately before the nozzle opening of the nozzle, and a separation mechanism section comprising a powder separation section and a suction fan connected to the processing tank discharge opening. It is intended.

  Thus, when the burner body is ignited, combustion gas is injected from the nozzle opening, the suction fan is operated, and the object to be crushed is supplied from the raw material supply mechanism into the pulverization treatment tank, the object to be crushed Fall just before. Then, the object to be crushed becomes a fine powder instantly due to the shock wave of the high-temperature jet jet flow higher than the speed of sound and the sudden explosive evaporation of moisture caused by exposure to high temperature. Some of them are also pulverized by collision between objects. The fine powder flows along the jet ring (combustion gas body) in the vertical ring-shaped treatment tank, and the flow velocity is reduced by expanding the flow path at the diversion section. The fine powder is discharged as it is by the suction action of the suction fan. The fine powder is separated from the outlet to the separation mechanism.

  In particular, an object that is not completely pulverized at the time of pulverization is not discharged from the discharge port due to its own weight in the diverting part, but falls down in the ring-shaped pulverization treatment tank as it is, and is re-rolled into the jet injection flow. It is to be powdered.

  According to the present invention (Claim 4), in the jet burner type pulverizing apparatus, a nitrogen generating mechanism is separately provided, and nitrogen gas is supplied to the pulverizing tank together with the jet jet flow.

  Therefore, the combustion gas from the burner body adjusts the fuel and air, and is injected as a complete combustion gas in an oxygen-free state. Further, nitrogen gas is supplied to prevent the outside air from entering the entire device, and the device is operated in an oxygen-free state. Thus, the combustible material such as a tire block piece can be pulverized.

  Since the present invention adopts the above-described configuration, the object to be pulverized is pulverized with a jet stream of a high-temperature jet from a jet burner or higher, and particularly the pulverization treatment tank has a vertical ring shape, The pulverization is performed again by the jet flow, and efficient continuous pulverization is realized.

  Next, an embodiment of the present invention will be described. The jet burner type pulverization apparatus shown in the embodiment is an apparatus mainly intended to be used for pulverization processing of scallop shells. The pulverization processing mechanism unit 1, the raw material supply mechanism unit 2, the separation mechanism unit 3, Consists of.

  The pulverization processing mechanism unit 1 includes a burner body 11 and a pulverization processing tank 12 provided with a flow dividing unit 13.

  The burner body 11 supplies high-pressure air and fuel to a combustion chamber whose peripheral surface is air-cooled or liquid-cooled, ignites and burns, and injects combustion gas from the nozzle port 14. ˜2000 ° C.) and a jet flow higher than the speed of sound (Mach 2 to 3).

  The burner body 11 needs to be formed of a material corresponding to the combustion temperature. In particular, by supplying air or nitrogen gas to the combustion chamber in a swirling state so as to surround the periphery of the combustion gas, the heat resistance temperature of the combustion chamber is increased. (For example, refer to Japanese Patent No. 3105182).

  The pulverization treatment tank 12 has a vertical ring shape (circular cross section or rectangular cross section) as a whole, for example, an inner peripheral radius of 315 mm and a width (axial direction) of 220 mm, but the upper part is a concentric circle with an outer peripheral radius of 420 mm, and the lower part is The outer peripheral surface of the outer peripheral radius of 490 mm is shifted by 70 mm center in the horizontal direction, and the outer peripheral portion of the horizontal center of the shifted radius center is extended vertically upward to form the discharge port 15 having a width (radial direction) of 200 mm, The wide flow path portion below the discharge port 15 is the diversion portion 13.

  The burner body 11 has a nozzle port (diameter 2 cm) toward the flow path on the side opposite to the flow dividing portion 13 in the lower part of the flow dividing portion 13 (a position slightly above the lowest position) in the pulverization treatment tank 12. 14 is provided.

  The raw material supply mechanism unit 2 includes a hopper unit 21, a dropping cylinder unit 22, and a transport unit 23, and the hopper unit 21 stores a scallop shell A that is an object to be crushed. The conveyance part 23 is connected. The dropping cylinder portion 22 is provided immediately above the nozzle port 14 of the burner body 11 in the pulverization treatment tank 12, and is connected to the final conveyance portion of the screw-type conveyance portion 23.

  The separation mechanism unit 3 is ejected from the side to form a vortex inside, the solid matter sinks downward by its own weight, and the cyclone type separation units 31 and 32 for taking out the gas from the upper center are provided in two stages. The filter unit 33 is connected to the separation unit 32, and the suction fan 34 is connected to the final stage.

  Thus, the burner body 11 is ignited, the combustion gas (jet injection flow) B is injected from the nozzle port 14, the suction fan 34 is operated, and the scallop shell (the object to be crushed) in the hopper portion 21 of the raw material supply mechanism portion 2. Material) A is dropped in the crushing processing tank 12 sequentially from the dropping cylinder part 22 by the conveying part 23.

  When the scallop shell A is dropped from the dropping cylinder portion 22 into the pulverization treatment tank 12, the scallop shell A falls immediately before the jet jet flow B, and the scallop shell A is heated by the jet jet flow B at a speed higher than the sonic speed and high temperature. It becomes fine powder (about 10 microns) C in an instant. The fine powder C travels in the pulverization processing tank 12 along the jet jet flow B, and the flow velocity is reduced in the flow dividing section 13. However, since the suction fan 34 is operating, the fine powder C remains in the discharge port. 15 to the separation mechanism unit 3.

  In the pulverization process, the scallop shell D, which is not completely pulverized, is not discharged from the diverter 13 to the discharge port 15 due to its own weight, but falls down in the ring-shaped pulverization treatment tank 12 as it is, It is re-entrained in the jet jet flow B and pulverized.

  In the separation mechanism unit 3, in the cyclone type separation units 31 and 32, the fine powder C sinks and accumulates under the cyclone under its own weight, is taken out from the bottom of the cyclone type separation units 31 and 32, and is further filtered from the gas in the filter unit. C will be completely removed.

  The fine powder C of scallop shell A can be used as a calcium material as it is as feed, fertilizer, soil improver, etc., as well as health food materials, cosmetic materials, building materials and the like.

  In particular, in areas where aquaculture scallops are thriving, scallop shells are industrial waste. By adopting this crusher, industrial waste can be used as an effective resource.

  In addition, the present invention can be used not only as the scallop shell but also as a fertilizer when pulverized fruits, vegetables and the like that have been discarded, such as mandarin orange waste. Moreover, not only non-combustible materials but also combustible materials can be pulverized. That is, when the jet injection flow is made into an oxygen-free state as a complete combustion gas, and a nitrogen generation mechanism is additionally provided and nitrogen gas is supplied to the pulverization treatment tank 12 together with the jet injection flow, the pulverization processing of combustible materials such as tire pieces is performed. In addition, since the tire piece is finely powdered as it is (without modification), there is an advantage that it can be reused as a tire raw material.

The whole block diagram of this invention apparatus. Explanatory drawing of the crushing processing tank. Explanatory drawing of the raw material supply mechanism part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Crushing process mechanism part 11 Burner body 12 Crushing process tank 13 Dividing part 14 Nozzle port 15 Outlet 2 Raw material supply mechanism part 21 Hopper part 22 Falling cylinder part 23 Conveying part 3 Separation mechanism parts 31 and 32 Cyclone type separation part 33 Filter part 34 Suction fan

Claims (4)

  A burner body and a pulverization treatment tank communicating in a vertical ring shape, the lowermost part of the pulverization treatment tank is a burner body that is supplied with compressed air and fuel to be ignited and burned and injected from a nozzle port as a high-temperature jet stream higher than the speed of sound. At a slightly higher position, the jet jet flow from the nozzle port is provided so as to jet toward the lowermost part of the processing tank and in the direction following the ring, and at a position shifted in the jet flow direction from the uppermost part of the pulverization processing tank Supplying the object to be crushed just before the pulverization mechanism part having a flow passage cross-sectional area larger than the flow path and having a flow dividing part provided with a discharge connection port above, and the burner body nozzle port in the pulverization treatment tank A jet burner type pulverizing apparatus comprising: a raw material supply mechanism section, and a separation mechanism section provided with a powder separation section and a suction fan connected to a treatment tank discharge port.   The raw material supply mechanism section is configured by a hopper section, a dropping cylinder section provided immediately before the nozzle port in the processing tank, and a screw type conveyance section provided between the bottom surface of the hopper section and the dropping cylinder section. Jet burner type crusher.   The jet burner type pulverization apparatus according to claim 1 or 2, wherein the separation mechanism section comprises a single-stage or multistage cyclone-type separation section, a filter section, and a suction fan.   The jet burner type pulverization apparatus according to any one of claims 1 to 3, wherein a nitrogen generation mechanism is provided separately, and nitrogen gas is supplied to the pulverization treatment tank together with the jet jet flow.

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