JP2000002483A - Jet burner type dryer/crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a jet burner type dryer/crusher in which a dried article of desired quality can be obtained without being subjected to thermal damage by improving the mixing/stirring in a processing tank and three phase separation can be realized while reducing the operating cost drastically. SOLUTION: In the jet burner type dryer/crusher, gas is jetted tram a jet burner 2 at a subsonic velocity by supplying oxidizing agent at a rate of 3 kg/cm2G or less and an article 28 to be processed is subjected to drying/crushing in the subsonic region of the jet gas 25. The article 28 is fed to a space in a processing tank 1 which does not come into direct contact the jet gas 25. A mechanism for taking out solid component and liquid component (solid/liquid discharging opening 11, solid/liquid separator 9) is disposed on the bottom of the processing tank 1. Inner temperature of the processing tank is detected at upper and lower points and supply of the article 28 as well as supply of fuel and oxidizing agent to the jet burner 2, is controlled based on the detected temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for drying and pulverizing an object to be processed by heating and subjecting the object to be processed by utilizing an ultra-high-speed and high-temperature jet gas of a jet burner. The present invention relates to a jet burner-type dry pulverizer capable of economically inexpensively removing dried powder and / or separated liquid and / or separated liquid having desired properties.

[0002]

2. Description of the Related Art A dry-pulverizing apparatus using a jet burner for jetting combustion gas at supersonic speed has been known, and such an apparatus is disclosed in Japanese Patent Publication No. 53-4935. Some of them are shown in FIG.

According to this technique, a jet burner 2a is installed on the upper part of the processing tank 1 having a closed structure to which an object 39 is supplied, and a supersonic flame jet flows from a jet port 4a of the jet burner 2a. The ejected gas 25a is sprayed onto the object 39 accumulated and retained in the processing tank 1 so as to be contained in the retained object 39 in a mixed state without burning the object 39. The evaporated component 32 such as water or oil is vaporized, and the solid component is dried and separated. On the other hand, the ejected gas 25a vaporizes the evaporation component 32 in the processing tank 1,
The energy is deprived by the reversal of the gas flow and the stirring of the evaporating component 32 and the solid component. Then, in a state where the evaporating component 32 and the solid component 30 are mixed,
The solid component 30 is then separated and recovered from the evaporating component 32 and the ejected gas in the first collector 33 and the second collector 34 through a duct 40 connected to the tank.

[0004] The object 39 to be retained can be crushed by the ejection pressure and the shock wave of the ejection gas 25a, and the ejection pressure of the ejection gas 25a has a sufficient kinetic energy enough to disperse a lightweight object on the combustion exhaust gas. , The stagnant processing object 39 filled between the processing tank wall
Layers are crushed and dried. Further, the layer of the stagnation object 39 filled between the processing tank and the wall of the processing tank forms a protective layer having a heat insulating effect. As a result, the portion near the wall of the processing tank is exposed to the high temperature in the central part of the tank. Nevertheless, it is maintained at a low temperature.

[0005] The flame jet stream of the jet gas 25a jetted from the jet burner 2a is produced using supply air having a pressure of about 6 kg / cm ² G, and has a temperature of 1500 to 2000.
K, the flow velocity is set to a supersonic speed of about 1000 to 1300 m / sec. By increasing or decreasing the supply amount of fuel and air, the flame temperature and ejection speed can be increased / decreased and the calorific value can be adjusted arbitrarily are doing. Injecting the supersonic and high-temperature jet flame into the retained workpiece 39 has an extremely large heat transfer coefficient. With such an injection specification, the water and oil content in the retained workpiece 39 can be extremely rapidly increased. Allows for evaporation.

[0006]

The prior art drying and pulverizing method using a jet burner 2a uses a jet burner 2a which superheats a jet gas 25a which is a supersonic jet due to the deflagration of fuel such as gasoline or kerosene and combustion air. It will make it squirt more. This ejected gas 25a is practically 120
2000-2400 at supersonic speed of 0-1300m / sec
It has been conventionally adjusted so that a flame of about ゜ K is ejected at an ejection pressure of about 6 kg / cm ² . Since the jet gas 25a is supersonic, the gas is discharged intensively and linearly without being dispersed. In addition, since the flow of the jet gas 25a is supersonic, the amount of entrainment due to the viscosity of the surrounding gas is small. Therefore, cooling due to entrainment and mixing of the surrounding gas is not performed, and the object to be retained is kept at a high temperature. 39 is sprayed. For this reason, the stagnation object 39 in the processing tank 1 comes into direct contact with the high-temperature supersonic jet gas 25a, and the stagnation object 39 obtains high heat transfer and is in contact with the jet gas 25a. Is dried instantly.

However, such localized high-temperature heating
This causes thermal degradation of the dried product. When reusing the dried product,
Since thermal deterioration is a fatal defect, it has been required to dry the workpiece by generating a low-temperature jet gas 25. In addition, the layer of the stagnation object 39, which is a protective layer that performs a heat insulating function such that the wall portion of the processing tank is maintained at a low temperature even though the central portion of the processing tank is at a high temperature, is placed at the center of the processing tank wall. And the presence of the same, it is possible to prevent the effluent gas 25
The moisture on the surface of the processing object 39 which is in direct contact with the liquid is rapidly evaporated by the rapid heat transfer of the jet gas 25a, and a solid film is formed on the surface of the stagnating processing object 39. Grows on the surface of the processing object 39 and grows, and furthermore, the stagnated processing object 39 on which the solid film is formed adheres to the wall surface of the processing tank, and becomes difficult to be easily peeled off from the tank wall. There is a danger that the lump of the stagnation target object 39 covered with the solid film may make the operation of the processing tank impossible. For example, in the case where sludge containing starch is dried and pulverized as the material to be treated 39, the layer of the retained material to be treated 39 sticks to the wall of the treatment tank with the passage of operation time, grows, and finally grows. This causes the processing tank to become inoperable.
In addition, forming a layer of the material 39 to be retained in the processing tank reduces the tank volume required for dry pulverization, and a predetermined amount of dried material cannot be obtained. In order to solve the above problem, the object to be processed is dried and pulverized with a gas having a lower temperature, and at that time, the object to be processed is stirred and mixed in order to eliminate the stagnation of the object in the processing tank 1. It is required to do.

On the other hand, if the stirring and mixing of the object to be processed in the processing tank is too vigorous, the undried object to be processed is simultaneously discharged from the solid-gas discharge port 6, and the desired dry powder and granules are removed. It is difficult to obtain. Further, in order to set the jet gas 25a from the jet burner to a supersonic gas at a temperature of 1500 K and an injection speed of about 1200 m / sec, supply air having a pressure of about 6 kg / cm ² G in the jet burner must be used. Therefore, the production cost of the apparatus is very high to produce air of about 6 kg / cm ² G.

Further, in the above-mentioned dry pulverizing apparatus utilizing the jet burner of the prior art, the object to be treated 28 has water and oil (
In particular, when the mixture is a mixture of a substance that is liquefied by heating) and a solid component, the moisture of the object 28 evaporates by heating, and the crushed solid component becomes lighter due to the separation of the liquid component and becomes lighter than the treatment tank 1. The oil that is discharged but does not evaporate by heating or the solid that liquefies by heating remains in the processing tank 1 in a liquid state and is accumulated without being discharged from the processing tank 1. Also, when foreign substances such as stones are present in the workpiece 28, such foreign substances are accumulated without being discharged from the processing tank, and cannot be removed from the processing tank during operation.

Further, in the above-mentioned dry pulverizing apparatus using the jet burner of the prior art, the temperature inside the processing tank 1 is measured at the upper temperature detecting end 36 of the processing tank 1 and the control device 38 adjusts the temperature to the measured temperature. By controlling the operation of the processing object supply device 19 (the supply device driving mechanism 22) to increase or decrease the supply amount of the processing object 28, the temperature in the processing tank 1 is maintained at a predetermined temperature. A control method was adopted.
However, in this method, when the temperature of the upper temperature detection end 36 changes due to a change in the water content of the processing object 28 or the like, the supply amount of the processing object is increased or decreased by adjusting the operation of the processing object feeder. The response of the processing object supply device 19 cannot follow the temperature change of the upper temperature detecting end 36, and there are signs that the temperature of the upper temperature detecting end 36 sharply rises and falls. For this reason, an excessive amount of the object to be treated 28 is supplied and deposited on the bottom of the processing tank 1,
Then, the surface of such a deposit is instantaneously dried by the jet gas 25a, but the inside of the deposit is dried only gradually and is deposited at the lower portion of the processing tank 1. This results in the formation of a stagnant layer of the processing object on which the solid film is formed in the processing tank, similarly to the phenomenon described above. Severe overheating causes deterioration of the quality of the obtained dry powder.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, a feature of the present invention is that a jet burner is installed at a position which is at a sufficient distance from the bottom of a processing tank, and supply of an oxidizing agent to the jet burner is performed. The pressure is reduced to 3 kg / cm ² or less to generate subsonic, not supersonic, spouted gas. On the other hand, the inside of the processing tank and the atmosphere are shut off, and the object to be processed is processed by the processing object feeder into the processing tank. The workpiece is dried and pulverized by, for example, supplying it along the wall of the processing tank so as not to come into direct contact with the jet gas at the subsonic speed, and then settled by gravity in a stationary separation unit in the processing tank. Thus, a dried product of a certain level or more is separated from other undried products and sent to a collector through a solid-gas outlet.

Therefore, the present invention more clearly provides a processing tank equipped with a jet burner facing the bottom of the processing tank, a processing object feeder for feeding the processing object into the processing tank, and a processing object. A solid-gas discharge port through which a mixed fluid of a dried product generated by performing a dry-pulverization process with a gas ejected from the jet burner and a gas after the process is discharged from an upper portion of the processing tank; In a drying and pulverizing apparatus having a collector section for separating the mixed fluid discharged from an outlet into the dried product and the processed gas, the processing tank may convert a dried product of a certain level or more into another undried product. And a stationary separation unit that sends the gas to the solid-gas discharge port, and a subsonic gas body is ejected from the jet burner by supplying an oxidizing agent of 3 kg / cm ² G or less to the jet burner, The object to be processed is the sub-sound in the processing tank. Of about A burner type drying pulverizer, characterized in that has a structure which is supplied to the gas body in direct contact with not space.

Another feature of the present invention is that, in the above-mentioned jet burner type dry pulverizer, a solid-liquid outlet for taking out a solid content and / or a liquid content of the dried and pulverized material is formed at the bottom of the processing tank. In addition, a solid-liquid separator is provided near the solid-liquid discharge port if necessary. In order to efficiently discharge the liquid and / or solid components, a bottom plate, a solid-liquid receiving tank, and a liquid discharge port are also provided.

Another feature of the present invention is that, in the above-mentioned jet burner type dry pulverizer, a temperature detector for measuring the temperature of the upper part of the tank and a temperature for measuring the temperature of the lower part of the tank, that is, the temperature of the object to be processed, are provided in the processing tank. A detector is provided, and a control device is further provided for controlling the supply amount of the processing object and / or the supply amounts of the fuel and the oxidant in the jet burner based on both detected temperatures.

According to the present invention, a means for supplying a fluid for cooling the jet gas and / or promoting agitation in the processing tank may be provided outside the jet outlet of the jet burner. Therefore, another feature of the present invention is that the jet burner-type drying and crushing apparatus further includes a cooling means for supplying a cooling fluid to a gas ejected from the jet port near the jet port of the jet burner. It is in. Prior art related to the present invention is disclosed in, for example, JP-A-53-7866 and Japanese Patent No. 25370.
It is also disclosed in Japanese Patent Publication No. 18 and the like.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a jet burner type dry pulverizing apparatus according to the present invention will be described below with reference to FIGS. The jet burner type drying and crushing apparatus of the present invention is a processing tank 1 equipped with a jet burner 2 facing the bottom of the tank, and a gas body ejected from the jet burner 2, that is, an ejected gas 2
5 (including the supersonic portion 25b), the object 28 is heated and pulverized and dried, and the dried product 30 produced by the treatment is heated.
A processing tank 1 in which a mixed fluid of the processing gas and the gas after the processing is passed through a stationary separation zone 17 and discharged from a solid-gas discharge port 6 at the top of the tank, and a processing object 28 for supplying a processing object 28 into the processing tank 1. A treated material feeder 19 and a collector unit 3 for separating and collecting the mixed fluid discharged from the solid-gas discharge port 6 into a dried product and a processed gas.
3, 34, etc., and further the residual liquid content in the processing tank 1 and / or
Alternatively, means for taking out solids 8, 9, 10, and 14 are provided as main components. In the stationary separation zone 17, a dried product having been dried to a certain level or more, that is, a desired degree of drying,
By gravity sedimentation, it is separated from other undried materials.

The jet burner type drying and pulverizing apparatus of the present invention will be further described with reference to FIG. On the side wall of the processing tank 1, a processing object supply device 19 that supplies the processing object 28 into the tank.
Is a predetermined position, that is, the object 2 to be supplied into the tank.
8 is provided along the tank wall without hitting the hot jet gas 25, that is, at a position where it can be supplied to a space that does not directly contact the jet gas 25 from the jet burner 2. A jet burner 2 is installed above the processing tank 1 so as to face the tank bottom. Further, on the upper part of the processing tank 1, a dried product 30 in which the processed object 28 is dried and pulverized into a granular form, a fluid in which the jet gas 25 and the steam heated and separated from the processed object 28 are mixed, That is, the solid-gas discharge port 6 for discharging the mixed gas 32
Is provided. Processing tank 1 equipped with jet burner 2
The solid-gas outlet 6 is connected to a cyclone 33 by a pipe 41,
Then, they are connected to the bag filter 34 by pipes 42 (FIG. 1). In short, these collectors separate and collect the dry matter 30 and the gas from the mixed gas 32. In the vicinity of the discharge port 6, there is a mixed gas 32 passing therethrough.
An upper temperature detector 36, which is a means for detecting the temperature of the processing tank 1, is provided below the processing tank 1.
Is provided with a lower temperature detector 37 for detecting the temperature. Further, although not shown in FIG. 1, a pipe for sending the fuel 23 and the oxidant 24 to the jet burner 2 is provided with means for metering and pressurizing the fuel and the oxidant, respectively, and the control device 38 By adjusting the operation of the metering and pressurizing means, the flow rates (supply amounts) of the fuel and the oxidizing agent can be controlled. In addition to the oxidizing agent measuring means and the like, the control device 38 includes an upper temperature detector 36 and a lower temperature detector 37 which are temperature detecting means, and a feeder driving mechanism of the feeder 19 for the workpiece. 22. In addition, a solid-liquid receiving tank 10 is provided below the processing tank 1, through which liquid and solid components are taken out. On the other hand, the dried powder separated by the cyclone 33 and the bag filter 34 is taken out by the delivery conveyor 35.

Next, the drying and pulverizing process using the jet burner 2 according to the present invention will be described with reference to FIG.
A fuel 23 (kerosene, methane gas, etc.) and an oxidant 24 (compressed air, oxygen, etc.) are supplied to a combustion chamber 3 of a jet burner 2 attached to the processing tank 1, and the combustion gas after combustion and excess oxidant Becomes jet gas 25, and is jetted linearly at supersonic speed from jet port 4. Jet gas 25 then reduces its speed, instantaneously passes through the sonic region, becomes a subsonic region, and is jetted radially. . Therefore, the ejected gas 25 is cooled by entraining a low ambient temperature gas or the like immediately after the sonic region, and then comes into contact with and agitates the workpiece 28 and the intermediate workpiece 29. The amount of the circulating gas 27 due to the entrainment increases as it approaches the bottom of the processing tank 1. For example, when 90 L / hr of kerosene is completely burned, the amount of the circulating gas 27 is intermediate between the injection port 4 and the bottom plate 8 at the tank bottom. Spouted gas 2 at a position near the tank wall
5 to 30 to 50 times the ejection volume. However, since the jet gas 25a injected from the conventional jet burner 2 is injected at a supersonic speed, almost no entrained flow of surrounding gas or the like occurs until the jet gas speed decreases to the sonic speed.
The temperature of 5a is not cooled. The length of the supersonic region of the jet gas 25a reaches 400 mm when, for example, kerosene 60 to 90 L / hr is completely burned and the pressure in the combustion chamber 3 is about 5.5 kg / cm ² G. The jet gas 25 of the jet burner 2 in the present invention is cooled by entraining the surrounding gas and the like immediately after the sonic region, and the object to be treated 28 comes into contact with the cooled jet gas 25. Thermal damage to the processing object 28 at the time of contact is reduced, and further, the cooling of the jet gas 25 promotes stirring of the entire processing tank 1. The agitation of the entire inside of the processing tank 1 causes the objects to be processed to frequently collide with each other, so that the objects to be processed 28 and the intermediate object to be processed 29 are efficiently crushed. The supply amount of the fuel 23 is mainly determined by the degree of drying of the object to be processed, but the supply amount of the oxidant 24 may be any supply amount that is equal to or more than the amount suitable for complete combustion of the fuel.
When the temperature of the processing tank 1 is controlled at a temperature lower than the combustion temperature of the dried product 30 to dry the workpiece 28 (for example, when the shell is dried and pulverized, the temperature of the upper temperature detector 36 is 200 ° C.
), An excess oxidizing agent can be supplied. In this case, the dried product 30 does not burn in the processing tank 1. Further, by controlling the supply amount of the oxidizing agent 24 with the control device 38 so that the oxygen concentration after the combustion of the oxidizing agent is equal to or lower than the combustion oxygen concentration of the object 28 and the dried product 30, excess oxidizing agent can be reduced. Can be supplied. The supply of the excess oxidant increases the agitation of the object to be treated, and the degree of drying of the object in the treatment tank 1 can be controlled by increasing or decreasing the supply amount of the excess oxidant.

The processing object 28 supplied to the processing tank 1 is heated, dried, and pulverized by the jet burner 2 by the above-described operation.
5. The circulating gas 27 and the mixed gas 26 of the steam generated by heating the intermediate processing object 29 are vigorously stirred and mixed. Thus, the dried product (powder material) 30 that has been dried and pulverized after the required heating time reaches the solid-gas discharge port 6 with the upward flow of the mixed gas 26. Here, if the mixing and stirring in the treatment tank 1 is too intense, there may be a case where a freshly dried product that does not reach the desired degree of drying is discharged from the solid-gas discharge port 6. Therefore, the apparatus of the present invention reduces the action of the mixing and stirring by the airflow above the mixing and stirring section accompanied by the circulating flow (hereinafter referred to as the dry pulverization zone), and the section mainly composed of the rising airflow (hereinafter referred to as the stationary separation). Zone). The stationary separation zone (static separation unit) separates the dried product 30 that has reached the desired degree of dryness from the freshly dried product that has not reached such a degree of dryness by gravity sedimentation. The cross-sectional area of the tank in the stationary separation zone is set to be larger than the cross-sectional area of the tank in the drying and crushing zone, or the cross-sectional area of the tank in the stationary separation zone is equivalent to the cross-sectional area of the tank in the dry and crushing zone. In terms of area, a structure may be adopted in which the vertical distance of the stationary separation zone is made longer to reduce the stirring force in the radial direction and the circumferential direction of the processing tank 1. As described above, the treatment tank 1 according to the present invention is provided with the stationary separation unit that separates the dried product 30 of a certain level or higher from the other undried products and sends the dried product 30 to the solid-gas discharge port. /
By supplying an oxidizing agent of cm ² G or less, a subsonic gas body is ejected from the jet burner, and the object to be processed is supplied to a space in the processing tank which is not in direct contact with the subsonic gas body. I have.

The supply air pressure in the conventional jet burner 2a is about 6 kg / cm ² G, but the supply air pressure to the jet burner 2 in the present invention is reduced to about 3 kg / cm ² G. However, the object to be processed in the processing tank 1 can be sufficiently dried and satisfactorily pulverized without being damaged by heat by the injection of the low-pressure jet gas 25, and the dried product 30 of desired quality can be obtained. Could be obtained. This also reduced the air compression energy consumed in this type of dry grinding apparatus by about 25%. Table 1 shows the operation results of the present apparatus when the sludge was used as the object to be treated and the drying and pulverizing treatment was performed.

[Table 1]

When foreign matter 31 (for example, stone) which is hard to be crushed is mixed in the workpiece 28, such foreign matter 31 is not discharged from the solid-gas discharge port 6, and is deposited on the bottom of the processing tank 1. It accumulates and such accumulations grow and fill the bottom of the treatment tank 1. Further, of the liquid component and the solid component contained in the processing object 28, components that do not evaporate and separate by heating (for example, oil component, fat component).
Is reduced by heating by the jet gas 25, is separated as a liquid substance, and remains in the processing tank 1. The isolated liquid material is pressed against the wall surface of the processing tank 1 by the jet gas 25 and accumulates at the bottom of the tank along the inclination of the tank wall. Then, with the increase of the liquid material, the bottom of the processing tank 1 is closed. Alternatively, it may be necessary to collect the liquid isolated at the bottom of the processing tank 1. Workpiece 28
Is a so-called three-phase separation (separation into gas, liquid and solid). For example, in the dry crushing and separation of ham residue, the water is separated as steam in the treatment tank 1 and taken out from the solid-gas discharge port 6, and the animal oil is separated as a liquid and drained. The solids are taken out from the outlet 12 and the solids are taken out from the solid-gas outlet 6 as a dried product, so that the liquids and solids can be recovered as products. The bottom plate 8 installed at the bottom of the processing tank 1 is connected to a bottom plate driving device 14 via a seal mechanism 15 and can move up and down. The bottom plate 8 has a gap with the bottom wall of the processing tank 1, from which the isolated liquid material flows down to reach the solid-liquid separator 9, where the entrained solid material is separated. . On the other hand, the liquid material reaches the solid-liquid receiving tank 10 and the liquid outlet 1
Removed from 2. The solid-liquid receiving tank 10 is shut off from the outside by a seal mechanism 15, and the liquid and solid substances accumulated in the tank 10 are taken out from the solid-liquid discharge pipe 11. If necessary, the pressure equalizing pipe 13 is connected to the workpiece supply device 19 and the solid-liquid receiving tank 10. The following Table 2 shows the operation results of the present apparatus in the case where the meat residue is used as an object to be processed and a drying and pulverizing process is performed.

[Table 2]

In this embodiment, a lower temperature detector 37 is provided below the processing tank 1 in addition to the upper temperature detector 36. When the stirring and mixing in the processing tank 1 is good, since the bottom of the processing tank 1 is smoothly stirred by the jet gas 25 and the circulating gas 27, the temperature measured by the upper temperature detector 36 in the processing tank 1. , The control of the supply amount of the processing object 28 and the fuel combustion amount in the jet burner 2 can be satisfied. However, an excessive amount of the object to be treated 28
Is supplied into the processing tank 1, the workpiece 28 is
The lower temperature detector 37 comes into contact with the deposited workpiece 28, detects the temperature (low temperature) of the workpiece 28 itself, and instructs the controller 38. Therefore,
Since the detection of an extremely low temperature by the lower temperature detector 37 means that the object 28 is deposited on the bottom of the processing tank 1, the control device 38 determines the temperature based on the temperature measured by the temperature detector 37. By controlling the operation of the drive mechanism 22 of the workpiece supply device 19, excessive supply of the workpiece 28 to the processing tank 1 can be suppressed. When an abnormally low temperature is detected by the lower temperature detector 37, the control device 38 increases the supply of the excess oxidant to the processing tank 1 so that the mixing and stirring at the bottom of the processing tank 1 becomes more active. It can also be increased. 4 and 5 show the results of such control.

Further, outside (near) the jet port 4 in the processing tank 1
Is provided with a jet gas cooling body supply pipe 16 for cooling the jet gas 25 appropriately. This supply pipe 1
Numeral 6 supplies a cooling body toward the gas 25 ejected from the jet burner 2. The jet gas 25 is cooled by contact with the cooling body. When water is used as the cooling body, a part of the water evaporates upon contact with the jet gas 25 and cools the jet gas 25. The remaining water becomes water droplets and becomes treatment tank 1.
, And is accelerated by the force of the jet gas 25 to collide with the object to be processed at a high speed, thereby assisting the mixing and stirring in the lower part of the processing tank 1.

[0024]

As described above, according to the present invention,
In the dry pulverization process, the gas emitted from the jet burner is used in the subsonic range to lower the temperature of the heat transfer medium, improve the mixing and stirring in the processing tank, and achieve the desired quality without thermal damage. Good dry pulverized material can be obtained, and the object can be separated into three phases of solid, liquid and gas. Moreover,
ADVANTAGE OF THE INVENTION According to this invention, the effect that the air compression energy consumed for dry pulverization processing can be reduced sharply by using a low-pressure jet gas can be obtained, and the operating cost of an apparatus can be reduced significantly. .

[Brief description of the drawings]

FIG. 1 is a system diagram showing an entire jet burner-type dry pulverizing apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a processing tank provided with a jet burner in the drying and crushing apparatus of the present embodiment.

FIG. 3 is a system diagram showing a conventional jet burner type drying and crushing apparatus.

FIG. 4 is a diagram showing a result of performing temperature control in a processing tank based on an upper temperature detector and a lower temperature detector.

FIG. 5 is a diagram showing a result of performing temperature control in a processing tank based on an upper temperature detector.

[Explanation of symbols]

 1: Treatment tank 2: Jet burner 2a: Jet burner 3: Combustion chamber 3a: Jet burner combustion chamber 4: Injection port 4a: Injection port 5: Processing object supply port 6: Solid-gas discharge port 7: Solid-liquid discharge port 8 : Bottom plate 9: solid-liquid separator 10: solid-liquid receiver 11: solid-liquid discharge tube 12: liquid discharge port 13: equalizing tube 14: bottom plate driving device 15: sealing mechanism 16: jet gas cooling body supply tube 17: Stationary separation zone 18: Workpiece receiving tank 19: Workpiece supply machine 20: Feed screw 21: Seal screw 22: Feeder drive mechanism 23: Fuel 24: Oxidizing agent 25: Ejection gas 25a: Ejection gas 25b: Ejection gas Supersonic section 26: mixed gas 27: circulating gas 28: object to be processed 29: intermediate dried product 30: dried product (powder) 31: foreign matter 32: evaporation component 33: cyclone 33a: first collector 34: bagfi Tha 34a: second collectors 35: payout Conveyor 36: upper temperature detector 37: the lower the temperature detector 38: control unit 39: residence object to be treated 40: duct 41: pipe 42: pipe

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Terumi Ogawa 5-2-2 Koyodai, Ryugasaki-shi, Ibaraki Pref. Hitachi Techno Engineering Co., Ltd. (72) Inventor Satoru Wada 2-7-9 Ikenota, Taito-ku, Tokyo No. Within Engineering Department, Hitachi Techno Engineering Co., Ltd. (72) Inventor Shuichi Mukai 2-9-7 Ikenohata, Taito-ku, Tokyo F-term within Engineering Department, Hitachi Techno Engineering Co., Ltd. 3L113 AA07 AB04 AB08 AC04 AC21 AC35 AC46 AC47 AC58 AC59 AC60 AC61 AC63 AC67 AC77 AC79 AC83 BA01 BA37 CA04 CA08 DA02 DA05 DA06 DA19 DA21 DA24

Claims (4)

[Claims] 1. A processing tank equipped with a jet burner facing the bottom of a tank, a processing object feeder for supplying a processing object into the processing tank, and a gas body which jets the processing object from the jet burner. A solid-gas discharge port in which a mixed fluid of the dried product generated by the dry pulverization process and the gas after the process is discharged from the upper portion of the processing tank, and the mixed fluid discharged from the solid-gas discharge port is In a drying and pulverizing apparatus comprising a collector portion for separating the dried product and the gas after the treatment, the treatment tank separates a dried product of a certain level or more from other undried products and removes the solid-gas outlet. Equipped with a stationary separation unit to send to
By supplying the oxidizing agent of 3 kg / cm ² G or less to the jet burner, a subsonic gas body is jetted from the jet burner, and the object to be processed is in direct contact with the subsonic gas body in the processing tank. A jet burner-type drying and crushing apparatus characterized in that the apparatus is supplied to a space that does not emit water. 2. A drying and pulverizing apparatus according to claim 1, wherein a solid-liquid outlet for taking out a solid content and / or a liquid content of the dried and pulverized material is formed at the bottom of the processing tank, and if necessary, a solid-liquid discharging port is formed. A jet burner-type dry pulverizer, wherein a separator is provided near the solid-liquid outlet. 3. The drying and pulverizing apparatus according to claim 1, wherein a temperature detector for measuring a temperature at an upper portion of the tank and a temperature detector for measuring a temperature at a lower portion of the tank are provided in the processing tank. A jet burner-type drying / pulverizing device, further comprising a control device for controlling a supply amount of the object to be treated and / or a supply amount of the fuel and the oxidizing agent in the jet burner based on both the detected temperatures. . 4. The drying and pulverizing device according to claim 1, wherein a cooling fluid is supplied to a gas body ejected from the jet port near the jet port of the jet burner. A jet burner-type drying / pulverizing apparatus, further comprising a cooling means for cooling.