JPS6144994A - Apparatus for cooling, solidifying and transporting pitch - Google Patents

Abstract

PURPOSE:To carry out simultaneously the cooling, the solidification and the transportation of high-temperature liquid pitch with a simple apparatus, by providing a cooling apparatus contg. cooling water therein provided with an effluent nozzle for feeding high-temperature liquid pitch and a water supply means for supplying cooling water as a swirling stream. CONSTITUTION:A cooling, solidification and transportation apparatus 5 is in the form of a vertical cylinder and provided with an effluent nozzle 15 for pitch and an air-introducing pipe 16 at its top. Further, the end of a cooling water-circulating passage 14 is connected to the top of the apparatus 5. Cooling water from the passage 5 is introduced into the apparatus 5 in the tangential direction so as to allow cooling water to flow as a swirling water within the apparatus 5. Hence, the cooling water is allowed to flow downward under such conditions that the apparatus 5 is filled with water. The high- temperature liquid pitch flowing out through the nozzle 15 is cooled and solidified in cooling water, moved downward by the flow of cooling water, passed through a pitch discharge passage 6 provided at the bottom of the apparatus 5 and is allowed to flow into a separation tank 7 where solidified pitch and water are separated. The pitch is precipitated by a difference in specific gravity and discharged through a passage 8 to the outside. Cooling water cooled in a cooler 12 is recycled through a passage 14 to the apparatus 5.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides an apparatus for cooling and solidifying high-temperature liquid pitch obtained when distilling tar obtained by carbonizing coal, wood, and other organic materials, and transporting it to a distant place. Regarding.

[Prior art]

Coal tar pitch is generally used as a paving tar compound for electrodes, briquettes, and other fillers.

BACKGROUND OF THE INVENTION Various methods have been put into practical use for cooling and solidifying high-temperature liquid pitch and for transporting or taking out the solidified pitch for use in various applications. For example, high-temperature liquid pitch is trickled down through a small-diameter outflow nozzle into a large volume of cold water in a tank, solidified in the cold water,
The material that has settled and accumulated at the bottom of the cypress is removed by a screw conveyor.
Alternatively, there is a method of taking the packets out on a packet conveyor and transporting them separately. Another example is to let cold water flow down onto a moving belt in the form of a film or from a nozzle, allowing the pitch to cool down during the time the belt moves through the cold water, and solidify to a predetermined location on the same belt. There is also a method of transporting the pitch.

Since the above-mentioned method and apparatus are large and complicated, leaving them in the vicinity where high-temperature liquid pitch is generated may cause problems with the arrangement of related equipment, and may deteriorate the working environment due to the generation of odorous gases. It's not a good idea to invite someone. Furthermore, in order to avoid the above-mentioned problems, there is a method of transporting high-temperature liquid pitch to a distant place via piping, but in this method, in order to prevent the pitch from cooling and solidifying inside the piping, the pitch must be forcibly removed from the outside. It is not preferable from the viewpoint of energy saving, since it is necessary to keep the piping warm by heating.

[Summary of the invention]

The present invention has been made to solve the problems of the prior art described above, and provides a device that can simultaneously cool, assimilate, and transport high-temperature liquid pitch using simple equipment. The purpose is to

The gist of the present invention is to cool and solidify high-temperature liquid pitch using a vertical cylindrical cooling device that holds internal cooling water, and the cooling device includes an outflow nozzle that supplies high-temperature liquid pitch; This is a pitch cooling, assimilation, and transportation device that is provided with a water supply device that gives a swirling flow to the cold water in the cooling device.

When cooling and solidifying high-temperature liquid pitch in the above device, a water supply device into the cooling device is provided at the top of the cooling device, and the amount of cold water is kept constant while maintaining the Ge phase at the top of the cold water, and the tangential line is The cold water in the device is continuously fed in a direction, giving a swirling flow to the cold water in the device to give it a centripetal swirl, and the liquid pitch is placed in the center of the swirling flow, preferably at a position away from the center,
When made into a trickle and allowed to flow down onto cold water, the object of the present invention can be effectively and effectively achieved.The present invention will be described below with reference to figures which are embodiments.[Embodiments of the Invention] Part 1 The figure is a flow sheet using the device of the present invention.
The figure is a schematic elevation view for explaining the device of the present invention. In FIG. 1, 1 is a high-temperature liquid pitch cypress, 2.4 is a pitch inflow route, 6 is a pitch transport pump, 5 is a pitch cooling and assimilation transport device of the present invention, and 6 is a pitch discharge route. , 7 is a separation tank, 8 is a pitch discharge line, 9 is a separation water route, 10 is a circulation pump, 11 and 14 are circulation water routes,
12 is a cooler, 16 is a refrigerant of the cooler, 15 is a pitch outflow nozzle, and 16 is an air feeding vibe.

In Fig. 1 above, the high-temperature liquid pitch held in tank 1 passes through pitch path 2 and is transferred to pitch transport bottle □
The liquid is sent out to the channel 4 by the pump 3, and flows out in a trickle form from the outlet nozzle 15 of the pitch into the cold water in the cooling, solidifying and transporting device 5.

- The cooling, solidifying, and transporting device 5 has a vertical cylindrical shape, and the top thereof is connected to a pitch outflow nozzle 15 as well as the tip of a circulating cold water path 14, and is further provided with an air inlet vibrator 16. There is. The cold water from the circulating cold water path 14 flows tangentially so as to give a swirling flow to the cold water in the device 5, and always flows downward in the device 5 in a substantially full state. The high-temperature liquid pitch flowing out from the bi-nochi outflow nozzle 15 is cooled and solidified in cold water, moves downward by the flow of the cold water, passes through the pitch discharge path 6 provided at the bottom of the device 5, and is sent to the separation tank 7. flows into. In this case, it is possible to make the device 5 longer and also serve as the path 6.

Separation tank 7 separates solidified pitch and water 3.
The pitch settles to the bottom of the separation tank 7 due to the difference in specific gravity with the water, and the supernatant water at the top of the separation tank 7 is sent to the circulation pump 10 through the path 9, to the path 211, and then to the cooler. At 12, the circulating cold water is further cooled by the refrigerant 16, and the circulating cold water cooled here is returned to the path 14 and discharged out of the system as appropriate.

Further, the air feeding vibe 16 is used to improve the centripetal nature of the swirling flow of cold water within the device 5, and allows an appropriate amount of air to flow in as needed.

Next, the cooling and solidification apparatus will be explained in more detail with reference to FIG. In FIG. 2, 17 is a gas phase part, 18 is a center line, and 19 is a swirl flow.

At the top of the cooling, solidifying and transporting device 5, a hot, liquid pitch outlet nozzle 15 projects downwardly into the device 5 via a channel 4, as shown. The outflow nozzle 15 is insulated as necessary to prevent clogging due to cooling and solidification of the liquid pitch, and the liquid pitch flows down from the outflow nozzle 15 in the form of a thin string. The pressure for discharging the liquid pitch from the outflow nozzle 15 is appropriately selected by controlling the pressure of the pump 3 so that a thin string-like flow is obtained.

The tip of the circulating cold water path 14 is connected to the outflow nozzle 1 as shown in the figure.
5 and tangentially into the device 5 such that the cooled water from the path 14 creates a circulating flow within the device 5.
flow inside. As a result, the water in the device 5 flows downward while maintaining the circulating flow. In this flowing state, when the liquid pitch that has flowed down from the outflow nozzle 15 comes into contact with the circulating flow, it sticks to the inner wall of the device 5. In order to prevent this, a gas phase 17 is maintained above the cold water in the device 5, creating a long swirling flow 19 that is centripetal in the center 18. As a result, the liquid pitch Q flowing down is caught in the vortex of the center part 1B and violently contacts the cold water at the center part, whereby it is efficiently cooled, solidified, and reduced into small particles, and flows downward together with the cold water. For this purpose, air is fed through the air charging pipe 16 to maintain a gas phase 17 at an appropriate height above the cold water. An appropriate height of the gas phase 17 is such that the water surface is located above the tip of the path 14 so that a circulating flow can be obtained efficiently, and the circulating flow of cold water does not come into contact with the outflow nozzle 15. desirable. Next, the outflow nozzle 15 attached to the top of the device 5 is positioned so that the liquid pitch lacquer falls into the center of the swirling flow 19. Preferably, the outflow nozzle 15 is placed at a position slightly away from the center 18. It is desirable to provide the particles in such a manner that cooling, solidification, and particle size reduction can be achieved more efficiently.

Examples using the apparatus of the present invention are shown below.

Example Cold water at 18° C. was continuously fed into the top of a glass cylinder having an inner diameter of 4.5 cm and a length of 40 cR to maintain a liquid column of 35 cIn length. The upper part of the cylinder came into contact with the atmosphere, and a swirling flow was generated at the center of the cylinder at a depth of 6.1 crn from the water surface.

Under such conditions, liquid tar pitch having a softening point of 76° C. and a temperature of 166° C. was allowed to flow down from a height of 3 cm above the water surface in the form of a trickle with a diameter of 2 to 3 m at a position 1.1 cm inside the inner wall. The pitch obtained solidifies very well and has a length of about 6-1
0III string-like material, and could be easily transported by the flow of water.

〔Effect of the invention〕

Compared to conventional devices, the pitch cooling, solidifying, and transporting device according to the present invention is a concrete structure and can be placed in a relatively narrow place where high-temperature liquid pitch is generated, and furthermore, it is possible to obtain solidified pitch suitable for transportation. This is extremely economical in terms of pitch utilization.

[Brief explanation of the drawing]

FIG. 1 shows a 70-sheet using the apparatus of the present invention, and FIG. 2 is a schematic elevation view of the apparatus of the present invention. Note that the same reference numerals in each figure indicate the same or the same functions. 1: High temperature liquid pitch tank, 6: Transport pump, 5: Cooling, assimilation transport device, 7: Separation tank, 10: Circulation pump, 12: Cooler, 15: Pitch outflow nozzle, 16: Air inlet pipe, 17 : phase part, 18: center line, 19: swirl flow. Agent Patent Attorney Sanro Kimura Figure 1

Claims (1)

[Claims] When solidifying liquid pitch, it consists of a vertical cylindrical cooling device that holds cold water inside, an outflow nozzle that supplies high temperature liquid pitch to the cooling device, and a swirling flow to the cold water in the cooling device. A pitch cooling, solidifying, and transporting device characterized by being equipped with a water supply device.