CN211203664U - Circulating ammonia water cleaning heat-preservation tar delivery pipeline - Google Patents

Abstract

A circulating ammonia water cleaning heat preservation tar outward-conveying pipeline comprises a tar raw material tank, a tar large tank, a mechanical clarifying tank and an ammonia water intermediate tank, wherein the inlet of the tar raw material tank is communicated with the tar outward-conveying pipeline, and one end of the tar outward-conveying pipelineCommunicated with one end of a tar pump, the utility model discloses a part (about 20 m) is introduced to the circulating ammonia water at the outlet of the circulating ammonia water pump³And h) circularly cleaning and insulating the pipeline for conveying the tar to the outlet of the tar pump, so that the method for cleaning and insulating the pipeline for conveying the tar by using steam in the prior art is replaced, the effect of cleaning and insulating the pipeline for conveying the tar to the outside can be achieved, and the stable operation of production can be ensured.

Description

Circulating ammonia water cleaning heat-preservation tar delivery pipeline

Technical Field

The utility model relates to a tar delivery pipe, more exactly a circulation aqueous ammonia cleans heat preservation tar delivery pipe.

Background

A large amount of raw gas is generated in the coking process of the coke oven, the raw gas at 600-650 ℃ is cooled to about 80 ℃ in a collecting pipe through circulating ammonia water, and the temperature of sensible heat absorbed by the circulating ammonia water in the raw gas is maintained at 75-78 ℃. About 60% of tar in the raw gas is condensed and cooled down, the tar is separated by a gas-liquid separator, and the condensate enters a mechanical clarifying tank 1 for standing separation of ammonia water and tar. The crude gas with the temperature of about 80 ℃ enters a primary cooler to be cooled to below 25 ℃, and the generated condensate is pumped to the mechanical clarifying tank 1 through a condensate pump. After ammonia water and tar in the mechanical clarifying tank 1 are statically separated, tar is pumped into a tar vat by a pump to be secondarily dehydrated, after the tar is statically dehydrated for 48 hours, the water content of the tar is less than 4.0 percent, and the tar is sent into a tar raw material tank 8 in a tar processing procedure through a tar delivery pipeline 7 by a tar pump 5 to be deeply processed and extracted into products or directly sent out by loading.

The existing tar delivery pipeline adopts steam to clean and preserve heat. In the coal gas purification and recovery process, after tar is delivered to the tar processing process, the external tar delivery pipeline needs to be thoroughly cleaned by using the steam cleaning pipe 6. Because the tar delivery pipeline is long, in order to prevent the tar delivery pipeline from being blocked (particularly in winter), the tar delivery pipeline must be subjected to steam retention and heat preservation after the outer pipeline is cleaned. On one hand, the top of a tar raw material tank in the tar processing procedure is continuously aerated (particularly obvious in winter), the surrounding environment is polluted, the on-site peculiar smell is large, and the body labor load of post operators is increased. On the other hand, the energy cost is greatly consumed, and the condensate after steam cleaning enters the tar raw material tank, so that the generation amount of wastewater is increased, the wastewater treatment cost is further improved, and the method is not in accordance with the increasingly severe energy-saving and environment-friendly concept.

Disclosure of Invention

The utility model aims at providing a circulation aqueous ammonia cleans heat preservation tar and sends pipeline outward can draw the circulation aqueous ammonia of circulation aqueous ammonia pump export small part (about 20 m)³And h) circularly cleaning and insulating the pipeline for conveying the tar to the outlet of the tar pump, so that the method for cleaning and insulating the pipeline for conveying the tar by using steam in the prior art is replaced, the effect of cleaning and insulating the pipeline for conveying the tar to the outside can be achieved, and the stable operation of production can be ensured.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

the utility model provides a circulation aqueous ammonia cleans heat preservation tar and sends pipeline outward, including tar raw material groove, the tar vat, mechanized settling tank and aqueous ammonia intermediate tank, the entry intercommunication tar of tar raw material groove sends pipeline outward, the one end of tar delivery pipeline communicates with the one end of tar pump, install tar raw material groove inlet valve on the tar delivery pipeline outward, the inside break-make of tar delivery pipeline can be controlled to tar raw material groove inlet valve, tar raw material groove inlet valve is located tar delivery pipeline one side near tar raw material groove, the other end of tar pump communicates with the inside of tar vat, the inside of mechanized settling tank communicates the export of aqueous ammonia intermediate tank and the one end intercommunication of circulation ammonia pump through pipeline and aqueous ammonia intermediate tank, circulation aqueous ammonia valve is introduced through the pipeline intercommunication in the export of circulation ammonia pump, the one end of introducing circulation aqueous ammonia valve communicates with the inside of tar delivery pipeline outward, the tar delivery pipeline is communicated with the circulating ammonia water returning regulating valve, one end of the circulating ammonia water returning regulating valve is communicated with the circulating ammonia water returning groove through a pipeline, the interior of the circulating ammonia water returning groove is communicated with the circulating ammonia water returning pump and the small circulating pipe regulating valve through a pipeline, and one end of the circulating ammonia water returning pump and one end of the small circulating pipe regulating valve are communicated with the interior of the mechanized settling tank through the small circulating pipe.

In order to further realize the purpose of the utility model, the following technical proposal can also be adopted that the circulating ammonia water pump and the connecting pipeline for introducing the circulating ammonia water valve are provided with a metal rotameter.

And the circulating ammonia water in the mechanical clarifying tank flows into the ammonia water intermediate tank in a full flow mode.

The utility model has the advantages that: the utility model discloses a lead the circulating ammonia water of circulating ammonia water pump export small part (about 20 m)³And h) circularly cleaning and insulating the pipeline for conveying the tar to the outlet of the tar pump, so that the method for cleaning and insulating the pipeline for conveying the tar by using steam in the prior art is replaced, the effect of cleaning and insulating the pipeline for conveying the tar to the outside can be achieved, and the stable operation of production can be ensured.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of the present invention.

Labeling components: 1. the device comprises a mechanized clarifying tank 2, an ammonia water intermediate tank 3, a circulating ammonia water pump 4, a tar large tank 5, a tar pump 6, a steam cleaning pipe 7, a tar delivery pipeline 8, a tar raw material tank 9, a tar raw material tank inlet valve 10, a circulating ammonia water returning regulating valve 11, a circulating ammonia water returning tank 12, a circulating ammonia water returning pump 13, a small circulating pipe regulating valve 14, a small circulating pipe 15, a metal rotameter 16 and a circulating ammonia water introducing valve.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

The utility model provides a circulation aqueous ammonia cleans heat preservation tar and sends pipeline outward, as shown in figure 1, including tar raw material groove 8, tar vat 4, mechanized clarification tank 1 and aqueous ammonia intermediate tank 2, the entry intercommunication tar of tar raw material groove 8 sends pipeline 7 outward, the one end of tar send pipeline 7 communicates with the one end of tar pump 5 outward, install tar raw material groove inlet valve 9 on the tar send pipeline 7 outward, the inside break-make of tar raw material groove inlet valve 9 can control tar send pipeline 7 outward, tar raw material groove inlet valve 9 is located the one side that tar send pipeline 7 is close to tar raw material groove 8 outward, the other end of tar pump 5 communicates with the inside of tar vat 4, the export of vat 2 intercommunication intermediate tank 2 and the one end intercommunication of circulation ammonia pump 3 are in the middle of the pipeline and aqueous ammonia intermediate tank 2 intercommunication in the inside of mechanized clarification tank 1, its characterized in that: the export of circulation ammonia water pump 3 passes through the pipeline intercommunication and introduces circulation ammonia water valve 16, the one end of introducing circulation ammonia water valve 16 and the inside intercommunication of tar outward delivery pipeline 7, tar outward delivery pipeline 7 intercommunication circulation ammonia water loopbacks governing valve 10, the one end that the circulation ammonia water loopbacks governing valve 10 passes through pipeline intercommunication circulation ammonia water loopbacks the groove 11, the inside that the circulation ammonia water loopbacks the groove 11 is through pipeline intercommunication circulation ammonia water loopbacks pump 12 and small circle pipe governing valve 13, the one end that the circulation ammonia water loopbacks pump 12 and the one end of small circle pipe governing valve 13 all communicate with the inside of mechanized settling tank 1 through small circle pipe 14.

The utility model discloses a lead the circulating ammonia water of circulating ammonia water pump export small part (about 20 m)³And h) circularly cleaning and insulating the pipeline for conveying the tar to the outlet of the tar pump, so that the method for cleaning and insulating the pipeline for conveying the tar by using steam in the prior art is replaced, the effect of cleaning and insulating the pipeline for conveying the tar to the outside can be achieved, and the stable operation of production can be ensured. The utility model discloses lead at least part of at least tar pump outlet pipeline department with the circulating ammonia water of circulating ammonia pump export, the pipeline that externally sent tar circulates and cleans and keeps warm, has replaced former technology to use steam to clean heat retaining mode, both can reach and send the pipeline outward to clean heat retaining effect to tar, can guarantee the steady operation of production again. The hot circulating ammonia water in the mechanical clarifying tank 1 flows into an ammonia water intermediate tank 2, and the circulating ammonia water is sent to a coke oven to cool the raw coke oven gas through a circulating ammonia water pump 3. When the condensation station carries out the operation of sending tar out, the valve 16 for introducing the circulating ammonia water is closed, and the metal rotameter 15 is ensured to display that the quantity of the circulating ammonia water is 0m³And h, opening a tar raw material tank 9 in the tar workshop, closing the circulating ammonia water returning regulating valve 10, and normally and continuously carrying out tar collecting and conveying operation.The small circulation pipe regulating valve 13 is opened, the liquid level of the circulating ammonia water returning tank 11 in the oil conveying process is stabilized through the small circulation pipe 14, a certain back flushing effect is achieved on the circulating ammonia water returning tank 11, and tar deposition is prevented. After the tar is fed through the tar pump 5 in the coal gas purification and recovery process, the tar processing process closes the tar raw material tank 9, and opens the circulating ammonia water returning regulating valve 10. Opening a circulating ammonia water introducing valve 16 at a condensation position to introduce a small part of circulating ammonia water to the outlet of the coke oil pump 5, and controlling the amount of the circulating ammonia water to be maintained at 20m by a metal rotameter 15³And about/h, cleaning and insulating the tar delivery pipeline 7. Circulating ammonia water in the tar delivery pipeline 7 flows to a circulating ammonia water returning tank 11, the circulating ammonia water is delivered to the coal gas purification and recovery procedure mechanized clarification 1 through a circulating ammonia water returning pump 12, and heavy components can be scraped after standing, layering and settling. The circulating ammonia water in the mechanical clarifying tank 1 flows into the ammonia water intermediate tank 2 fully, thereby forming a circulating cleaning heat preservation mode of a closed loop.

The above structure is an essential technical feature of the present application.

Material selection and feasibility analysis of specific implementation of application range: the practical manufactured sample is implemented by taking the specification attached drawing as a drawing according to the proportion and the matching mode of each part in the specification attached drawing, the connection is a common connection mode such as a connection of a strong adhesive, a welding, riveting and a flange connection and an integral forming type connection, and the thickness and the strength of a corresponding connection mode connection point can be selected without creativity according to the requirement of practical connection strength during practical manufacturing.

The following technical contents are unnecessary technical features of the technology:

and a metal rotor flow meter 15 is arranged on a connecting pipeline between the circulating ammonia water pump 3 and the circulating ammonia water introducing valve 16.

The utility model discloses a metal rotameter 15 can measure the velocity of flow in the pipeline.

The circulating ammonia water in the mechanical clarifying tank 1 flows into the ammonia water intermediate tank 2.

The utility model discloses a circulation aqueous ammonia full flow among the mechanized settling tank 1 is to the aqueous ammonia intermediate tank 2 in to form the circulation of "closed loop" and clean the heat preservation mode.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention.

Claims (3)

1. A circulating ammonia water cleaning heat preservation tar outward conveying pipeline comprises a tar raw material tank (8), a tar large tank (4), a mechanical clarifying tank (1) and an ammonia water intermediate tank (2), wherein an inlet of the tar raw material tank (8) is communicated with a tar outward conveying pipeline (7), one end of the tar outward conveying pipeline (7) is communicated with one end of a tar pump (5), a tar raw material tank inlet valve (9) is installed on the tar outward conveying pipeline (7), the tar raw material tank inlet valve (9) can control the on-off of the inside of the tar outward conveying pipeline (7), the tar raw material tank inlet valve (9) is positioned on one side, close to the tar raw material tank (8), of the tar outward conveying pipeline (7), the other end of the tar pump (5) is communicated with the inside of the tar large tank (4), the inside of the mechanical clarifying tank (1) is communicated with one end of the ammonia water intermediate tank (2) through a pipeline and the ammonia water intermediate tank (2), the method is characterized in that: the export of circulation ammonia water pump (3) is passed through the pipeline intercommunication and is introduced circulation aqueous ammonia valve (16), the one end of introducing circulation aqueous ammonia valve (16) and the inside intercommunication of tar outward delivery pipe way (7), tar outward delivery pipe way (7) intercommunication circulation aqueous ammonia loopback governing valve (10), the one end that the circulation aqueous ammonia loopbacks governing valve (10) is passed through pipeline intercommunication circulation aqueous ammonia and is loopbacked groove (11), the inside that the circulation aqueous ammonia loopbacks groove (11) is passed through pipeline intercommunication circulation aqueous ammonia and is loopbacked pump (12) and small circle governing valve (13), the one end that the circulation aqueous ammonia loopbacked pump (12) and the one end of small circle governing valve (13) all communicate through the inside of small circle pipe (14) and mechanized settling tank (1).

2. The circulating ammonia water cleaning heat preservation tar delivery pipeline according to claim 1, characterized in that: and a metal rotor flowmeter (15) is arranged on a connecting pipeline between the circulating ammonia water pump (3) and the circulating ammonia water introducing valve (16).

3. The circulating ammonia water cleaning heat preservation tar delivery pipeline according to claim 1, characterized in that: the circulating ammonia water in the mechanical clarifying tank (1) flows into the ammonia water intermediate tank (2) in a full flow mode.

Images