CN213630467U - Device for cleaning wall-mounted carbon black of high-temperature air preheater - Google Patents

Abstract

The utility model provides a device of clearance high temperature air heater wall built-up carbon black. The device comprises a support frame, a traveling crane, a storage bin, a pressure storage bin, a feeding pipe, a discharging pipe, a compressed air inlet pipe and a compressed air outlet pipe, wherein the traveling crane is arranged at the top of the support frame, and the storage bin and the pressure storage bin are sequentially arranged below the traveling crane; the bottom of the storage bin is connected with the pressure storage bin through the feeding pipe, and the bottom of the pressure storage bin is connected with the discharging pipe; the compressed air inlet pipe and the compressed air outlet pipe are respectively connected with the pressure storage bin; the feeding pipe, the discharging pipe, the compressed air inlet pipe and the compressed air outlet pipe are respectively provided with a valve. The particle carbon black and the compressed air are added into the pressure storage bin, and the pressure storage bin is connected with the carbon black high-temperature air preheater through a pipeline, so that the particle carbon black in the pressure storage bin flows into the high-temperature air preheater under the action of air pressure, and the carbon black on the inner wall of a flue gas pipe of the high-temperature air preheater can be cleaned.

Description

Device for cleaning wall-mounted carbon black of high-temperature air preheater

Technical Field

The utility model relates to a carbon black production auxiliary device, concretely relates to device of wall built-up material in clearance high temperature air heater carbon black flue gas pipeline.

Background

In daily carbon black production process, the carbon black flue gas after the pyrolysis reaction contains a large amount of steam and mixes together after once quenching, and the carbon black flue gas of high temperature carries out the heat exchange through the inside (tube side) carbon black flue gas pipeline of high temperature pre-heater and the process air that gets into high temperature pre-heater (shell side), can produce steam and paste on carbon black flue gas pipeline inner wall when carrying out the heat exchange, and the carbon black particle in the flue gas is pasted on the pipeline inner wall because of steam (wall built-up phenomenon). Therefore, the heat exchange effect of the high-temperature air preheater is reduced, the preheating temperature of the process air is lower, the temperature of the combustion zone of the reaction furnace cannot meet the process design requirement, the lower combustion temperature can influence the cracking reaction of the raw oil in the carbon black generation reaction process, the reaction is incomplete, more raw materials are consumed, and impurities are easily generated. The carbon black wall built-up that carbon black flue gas pipeline wall was pasted piles up after serious and will lead to reaction zone pressure too high, will influence not only the joining of reaction material, influences the performance of device productivity, and in addition, reaction zone pressure too high still will influence raw oil atomizing, leads to having partial raw materials to react badly and take place the coking phenomenon to produce impurity influence carbon black quality.

The existing method for solving the problem of carbon black smoke wall hanging of the high-temperature air preheater is combustion hot smoke purging, namely, under the condition that raw material feeding is stopped, a carbon black smoke pipeline is purged by high-temperature smoke which still contains a certain amount of surplus oxygen and is generated by combustion of air and fuel in a combustion furnace, and carbon black agglomerates adhered to the carbon black smoke pipeline are purged by high-speed flowing high-temperature smoke while the wall hanging carbon black is combusted by using part of the surplus oxygen. The method has long purging time, unsatisfactory effect of cleaning the caking, large consumption of fuel energy and electric energy, greatly increased production cost, increased operation of pulling and inserting the raw material gun in a high-temperature area of staff, high labor intensity of high-temperature operation and high danger.

Disclosure of Invention

An object of the utility model is to provide a clear up device of high temperature air pre-heater wall built-up carbon black, the device can solve carbon black high temperature flue gas and lead to the carbon black at the intraductal wall built-up caking problem of flue gas because vapor condensation when carrying out the heat exchange through carbon black flue gas pipeline and outside air to can just can high-efficiently clear up carbon black flue gas pipeline carbon black wall built-up phenomenon not influencing normal production process.

The utility model provides a device for cleaning wall-mounted carbon black of a high-temperature air preheater, which comprises a support frame, a traveling crane, a storage bin, a pressure storage bin, a feeding pipe, a discharging pipe, a compressed air inlet pipe and a compressed air outlet pipe, wherein the traveling crane is arranged at the top of the support frame, and the storage bin and the pressure storage bin are sequentially arranged below the traveling crane; the bottom of the storage bin is connected with the pressure storage bin through the feeding pipe, and the bottom of the pressure storage bin is connected with the discharging pipe; the compressed air inlet pipe and the compressed air outlet pipe are respectively connected with the pressure storage bin; the feeding pipe, the discharging pipe, the compressed air inlet pipe and the compressed air outlet pipe are respectively provided with a valve. When the carbon black high-temperature air preheater is used, the discharge pipe is connected with the carbon black high-temperature air preheater through a pipeline, and the compressed air inlet pipe is connected with an air compressor; pouring the granular carbon black into the storage bin through the travelling crane, and then enabling the granular carbon black to enter the pressure storage bin through the feeding pipe; then opening valves on the compressed air inlet pipe (the feed pipe, the discharge pipe and the valves on the compressed air outlet pipe are all closed), enabling compressed air to enter the pressure storage bin, and closing the valves on the compressed air inlet pipe after the pressure in the pressure storage bin reaches 0.05-0.08 MPa; and finally, opening a valve on the discharge pipe to enable the particle carbon black to flow into the carbon black high-temperature air preheater under the action of air pressure, and cleaning the carbon black on the inner pipe wall of a flue gas pipe of the high-temperature air preheater.

Further, the support frame is from last down including first layer, second floor and third layer, and the track is installed to the first layer, the line hangs and installs on the track of first layer, and the storage silo is installed on the second floor, and the storage is pressed the storehouse and is installed on the third layer.

Further, the bottom of the storage bin is conical, and the bottom of the pressure storage bin is conical.

Further, still include the blast pipe, the blast pipe with the pressure storage storehouse top is connected, be equipped with the valve on the blast pipe.

The step of utilizing the device of clearance high temperature air heater wall built-up carbon black to clear up high temperature air heater wall built-up carbon black can be:

adding granular carbon black into one pressure storage bin, and adding compressed air into the pressure storage bin to ensure that the pressure in the pressure storage bin reaches 0.05-0.08 MPa;

and the pressure storage bin is connected with the high-temperature air preheater by using a pipeline, so that the granular carbon black in the pressure storage bin flows into the high-temperature air preheater under the action of air pressure to clean the inner pipe wall of a flue gas pipe of the high-temperature air preheater.

The utility model has the advantages that: the method has the advantages that the method can be used for clearing away the caking carbon black generated on the inner pipe wall of the flue gas pipe of the high-temperature air preheater, improving the heat exchange efficiency of the air preheater, reducing the energy consumption of the carbon black, avoiding the high-temperature operation of operators blowing the high-temperature air preheater and reducing the labor intensity; the cleaning time is short, the change of the production capacity and the process parameters of the carbon black is not influenced, and the stability of the quality of the carbon black is ensured; the movable carbon black wire has the advantages of being capable of being commonly shared by other carbon black wires and saving the production cost of the carbon black.

Drawings

Fig. 1 is a schematic structural diagram of a device for cleaning wall-mounted carbon black of a high-temperature air preheater of the present invention.

FIG. 2 is a schematic diagram of the device for cleaning the wall-mounted carbon black of the high-temperature air preheater of the utility model connected with the high-temperature preheater.

The reference signs explain: 1. the support frame, 2, hang in the line, 3, storage bin lid, 4, the storage silo, 5, the pressure chamber, 6, the inlet pipe, 7, the feed valve, 8, compressed air inlet pipe, 9, compressed air inlet valve, 10, compressed air outlet pipe, 11, compressed air outlet valve, 12, the blast pipe, 13, the discharge valve, 14, the manometer, 15, the discharging pipe, 16, the bleeder valve, 17, the coupling hose, 18, sweep the inclined line, 19, the inclined line valve, 20, high temperature air preheater, 21, carbon black flue gas pipeline, 22, air inlet pipeline, 23, the air outlet pipeline, 24, high temperature flue gas pipeline.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly. The thickness and shape of each layer of film in the drawings do not reflect the true proportion, and the purpose is only to illustrate the content of the present invention.

As shown in FIG. 1, the utility model discloses a device of clearance high temperature air heater wall built-up carbon black, including support frame 1, line hang 2, storage silo 4, storage pressure bin 5, inlet pipe 6, compressed air import pipe 8, compressed air outlet pipe 10, blast pipe 12 and discharging pipe 15.

The supporting frame 1 is a steel structure frame and is divided into three layers, the topmost layer is a first layer and is provided with a track, the traveling crane 2 is arranged on the track of the first layer, and the traveling crane 2 can move along the track; the storage bin 4 is arranged on the second layer, and the bottom of the storage bin 4 is conical and is connected with the top end of the feeding pipe 6; the pressure storage bin 5 is arranged on the third layer, and the top of the pressure storage bin 5 is connected with the bottom end of the feeding pipe 6. The travelling crane 2 is one ton in size, and the travelling crane 2 can lift one ton of heavy materials. The storage bin 4 is provided with a storage bin cover 3. The feed pipe 6 is provided with a feed valve 7. The compressed air inlet pipe 8 and the compressed air outlet pipe 10 are respectively connected with the pressure storage bin 5, the compressed air inlet pipe 8 is provided with a compressed air inlet valve 9, and the compressed air outlet pipe 10 is provided with a compressed air outlet valve 11. The exhaust pipe 12 is connected with the top of the pressure storage bin 5, and an exhaust valve 13 is arranged on the exhaust pipe 12. The bottom of the pressure storage bin 5 is conical, the discharge pipe 15 is connected with the bottom of the pressure storage bin 5, and the discharge pipe 15 is provided with a discharge valve 16.

In some embodiments, the inlet valve 7, the compressed air inlet valve 9, the compressed air outlet valve 11, the exhaust valve 13 and the discharge valve 16 are electrically operated valves, which are convenient to control.

As shown in figure 2, when the device for cleaning the wall-mounted carbon black of the high-temperature air preheater is used for cleaning the high-temperature air preheater, a 500kg finished carbon black bag is lifted by a traveling crane 2, a storage bin cover 3 is opened, and the granular carbon black in the carbon black bag is poured into a storage bin 4. The exhaust valve 13 and the feed valve 7 are opened to allow the particulate carbon black in the storage bin 4 to pass through the feed pipe 6 into the pressure storage bin 5. And closing the exhaust valve 13 and the feed valve 7, connecting the compressed air inlet pipe 8 with an air compressor, and opening the compressed air inlet valve 9 to enable compressed air to enter the pressure storage bin 5 for pressure storage. A purging inclined pipeline 18 is connected to the side wall of the carbon black high-temperature air preheater 20, a inclined pipe valve 19 is arranged on the purging inclined pipeline 18, and the purging inclined pipeline 18 is connected with the discharge pipe 15 through a connecting hose 17 (which can be a metal hose). The inclined pipe valve 19 is opened, the discharge pipe 15 is opened, the particle carbon black in the pressure storage bin 5 enters the high-temperature air preheater 20 through the discharge pipe 15, the connecting hose 17 and the purging inclined pipeline 18 under the action of pressure, the particle carbon black enters the carbon black flue gas pipeline 21 together with carbon black flue gas from the high-temperature flue gas pipeline 24 in the reaction zone at the bottom of the high-temperature air preheater 20, and enters the collection zone after passing through the carbon black flue gas pipeline 21. The particle carbon black and the carbon black flue gas of high velocity of flow get into carbon black flue gas pipeline 21 together, and the particle carbon black collides with the carbon black caking (wall built-up material) on the carbon black flue gas pipeline 21 inner wall and under flue gas stream scouring, and the pipe wall caking is washed away the collision and is dropped for the carbon black caking of carbon black flue gas pipeline 21 inner wall can be cleared up.

In order to achieve a better cleaning effect, the pressure range in the pressure storage bin 5 is controlled to be 0.05-0.08 MPa, the purging time is 4-6 seconds, and the purging time is controlled through the discharge valve 16; the maximum entering amount of the granular carbon black in the pressure storage bin 5 can not exceed the conical part at the lower end of the pressure storage bin 5.

The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims (4)

1. A device for cleaning wall-mounted carbon black of a high-temperature air preheater comprises a support frame, a traveling crane, a storage bin, a pressure storage bin, a feeding pipe, a discharging pipe, a compressed air inlet pipe and a compressed air outlet pipe, wherein the traveling crane is arranged at the top of the support frame, and the storage bin and the pressure storage bin are sequentially arranged below the traveling crane; the bottom of the storage bin is connected with the pressure storage bin through the feeding pipe, and the bottom of the pressure storage bin is connected with the discharging pipe; the compressed air inlet pipe and the compressed air outlet pipe are respectively connected with the pressure storage bin; the feeding pipe, the discharging pipe, the compressed air inlet pipe and the compressed air outlet pipe are respectively provided with a valve.

2. The device for cleaning the wall built-up carbon black of the high-temperature air preheater as claimed in claim 1, wherein: the support frame is from last down including first layer, second floor and third layer, and the track is installed to the first layer, the line hangs and installs on the track of first layer, and the storage silo is installed on the second floor, stores up and presses the storehouse to install on the third layer.

3. The device for cleaning the wall built-up carbon black of the high-temperature air preheater as claimed in claim 1, wherein: the bottom of the storage bin is conical, and the bottom of the pressure storage bin is conical.

4. A device for cleaning wall-mounted carbon black of a high-temperature air preheater as claimed in any one of claims 1 to 3, characterized in that: still include the blast pipe, the blast pipe with the pressure storage storehouse top is connected, be equipped with the valve on the blast pipe.

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