CN112933731A - Flow arrangement for primary water treatment system of Integrated Gasification Combined Cycle (IGCC) gasification device - Google Patents

Flow arrangement for primary water treatment system of Integrated Gasification Combined Cycle (IGCC) gasification device Download PDF

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Publication number
CN112933731A
CN112933731A CN202110163280.8A CN202110163280A CN112933731A CN 112933731 A CN112933731 A CN 112933731A CN 202110163280 A CN202110163280 A CN 202110163280A CN 112933731 A CN112933731 A CN 112933731A
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CN
China
Prior art keywords
pipeline
filtrate
treatment system
water treatment
tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110163280.8A
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Chinese (zh)
Inventor
吴平
秦建明
祁海鹏
艾云涛
王相平
李志强
文子强
孙国平
王超
许冬亮
贾东升
付彬
张克
李显韩
白国威
李宗旸
康建邦
顾广宇
朱富强
王瑞超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huaneng Tianjin Coal Gasification Power Generation Co Ltd
Original Assignee
Huaneng Tianjin Coal Gasification Power Generation Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huaneng Tianjin Coal Gasification Power Generation Co Ltd filed Critical Huaneng Tianjin Coal Gasification Power Generation Co Ltd
Priority to CN202110163280.8A priority Critical patent/CN112933731A/en
Publication of CN112933731A publication Critical patent/CN112933731A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/04—Combinations of filters with settling tanks
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/82—Gas withdrawal means
    • C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/16—Integration of gasification processes with another plant or parts within the plant
    • C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
    • C10J2300/1615—Stripping
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/16—Integration of gasification processes with another plant or parts within the plant
    • C10J2300/169—Integration of gasification processes with another plant or parts within the plant with water treatments
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
    • Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The invention provides a flow setting of a preliminary water treatment system for an IGCC gasification device, which comprises filtration treatment, wherein sewage is injected into a vacuum belt filter for filtration from the bottom of a clarifying tank through a sewage pump through a first pipeline, filtrate is collected, and the filtered filtrate is injected into a filtrate collecting tank through a vacuum pump through a second pipeline; the filtrate in the filtrate collection tank is conveyed back to the clarifying tank through a filtrate pump for recycling; one end of the return pipeline is connected with the clarifying tank, and the other end of the return pipeline is communicated with the first pipeline; the clarifying tank bottom is connected with the vacuum belt filter through a first pipeline, the bottom of the vacuum belt filter is connected with a filtrate collecting tank through a second pipeline, the filtrate collecting tank is connected with the clarifying tank through a third pipeline, so that the long-term, high-quality and stable operation of a preliminary water treatment system is realized, and the problems of long flow, high power consumption, easy blockage and the like of the preliminary water treatment system are solved.

Description

Flow arrangement for primary water treatment system of Integrated Gasification Combined Cycle (IGCC) gasification device
Technical Field
Embodiments of the present invention relate generally to the technical field of coal chemical industry, and more particularly, to a preliminary water treatment system flow arrangement for an IGCC gasification plant.
Background
The crude synthesis gas produced by the two-section dry pulverized coal gasification furnace passes through a dry ash removal and high-temperature water washing device, solid particles mixed in the crude synthesis gas and other water-soluble impurities are removed, and the two-section dry pulverized coal gasification furnace is provided with a preliminary water treatment system for preliminary treatment of wastewater produced in the high-temperature water washing process. The original design is that a vacuum belt filter is used for removing solid impurities in wastewater, the wastewater is input into a slurry storage tank from the bottom of a clarification tank through a wastewater pump, then input into the vacuum belt filter through a slurry pump for filtering, and the filtered water is discharged into a filtrate collection tank and then conveyed back into the clarification tank through a filtrate pump.
However, the mortar in the mud tank is accumulated at the bottom of the tank due to the gravity, so that the bottom of the mud tank is frequently blocked, and great trouble is brought to the operation of equipment. Due to the presence of the overflow pipe of the mud tank, a large amount of plaster accumulates at the bottom of the sewage tank for a long time, often hindering the operation of the sewage pump.
The original filtering system is complex in flow, the whole flow is carried out in series, one link has problems, and the whole sewage treatment chain is completely paralyzed. The power consumption of the system is increased due to the complex flow and the complex equipment, the power supply efficiency of the unit is reduced, and the equipment maintenance cost is obviously increased.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a flow setting for a primary water treatment system of an IGCC gasification device, which can realize long-term, high-quality and stable operation of the primary water treatment system and aims at the problems of long flow, high power consumption, easy blockage and the like of the primary water treatment system.
The technical scheme of the implementation of the invention is as follows: a flow setting for a primary water treatment system of an IGCC gasification device comprises filtration treatment, wherein sewage is injected into a vacuum belt filter from the bottom of a clarifying tank through a sewage pump through a first pipeline for filtration;
collecting filtrate, and injecting the filtered filtrate into a filtrate collecting tank through a second pipeline by a vacuum pump;
the filtrate in the filtrate collection tank is conveyed back to the clarifying tank through a filtrate pump for recycling;
one end of the return pipeline is connected with the clarifying tank, and the other end of the return pipeline is communicated with the first pipeline;
the bottom of the clarifying tank is connected with a vacuum belt filter through a first pipeline, the bottom end of the vacuum belt filter is connected with a filtrate collecting tank through a second pipeline, and the filtrate collecting tank is connected with the clarifying tank through a third pipeline.
Further, the first pipeline is provided with the sewage pump and a first valve;
further, the vacuum pump is arranged on the second pipeline.
Further, the third pipeline is provided with the filtrate pump.
Further, the first valve is arranged on the first pipeline between the position where the return pipeline is connected with the first pipeline and the vacuum belt filter.
Further, the device also comprises a second valve, and the second valve is arranged on the return pipeline.
The filter cake collecting tank is arranged below the vacuum belt filter and is used for collecting filter cakes formed by filtering through the vacuum belt filter.
In the flow setting of the preliminary water treatment system for the IGCC gasification unit, provided by the embodiment of the invention, the following technical effects are realized:
(1) through the simplification of the flow of the water treatment system, the equipment failure occurrence rate is reduced to a great extent, and the plant power consumption rate and the equipment maintenance cost are reduced.
(2) The backflow pipeline is additionally arranged at the outlet of the sewage pump at the bottom of the clarifying tank, so that the influence range of subsequent filter cake making equipment during failure is reduced to a great extent, and the water treatment system can integrally run and can run in an isolated mode.
It should be understood that the statements herein reciting aspects are not intended to limit the critical or essential features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:
FIG. 1 is a schematic diagram of a preliminary water treatment system flow arrangement for an IGCC gasification plant.
Wherein, the corresponding relationship between the reference numbers and the component names in fig. 1 is:
10. the device comprises a clarifying tank 20, a first pipeline 21, a first valve 22, a sewage pump 30, a vacuum belt filter 40, a second pipeline 41, a vacuum pump 50, a filtrate collecting tank 60, a third pipeline 61, a filtrate pump 70, a return pipeline 71, a second valve 80 and a filter cake collecting tank.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition
In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
Referring now to FIG. 1, a preliminary water treatment system flow arrangement for an IGCC gasification plant is provided, including:
collecting filtrate, and injecting the filtered filtrate into a filtrate collecting tank 50 through a vacuum pump 41 and a second pipeline 40;
the filtrate in the filtrate collection tank 50 is recycled, the filtrate is conveyed back to the clarifying tank 10 through the filtrate pump 61, and the sewage in the clarifying tank 10 is recycled after being filtered.
It should be noted that, in the flow of the preliminary water treatment system, other devices for utilizing water are provided, and the water treatment system filters and recycles the sewage after being utilized by the other devices.
The bottom of the clarifying tank 10 is connected with a vacuum belt filter 30 through a first pipeline 20, the bottom end of the vacuum belt filter 30 is connected with a filtrate collecting tank 50 through a second pipeline 40, and the filtrate collecting tank 50 is connected with the clarifying tank 10 through a third pipeline 60;
the return line 70 has one end connected to the clarifier 10 and the other end connected to and communicated with the first line 20.
In some embodiments, the first pipe 20 is provided with a sewage pump 22 and a first valve 21;
in some embodiments, a vacuum pump 41 is provided on the second conduit 40;
in some embodiments, a filtrate pump 61 is provided on the third conduit 60;
when the condition is present or the maintenance is needed during the operation of the vacuum belt filter 30, the first valve 21 needs to be closed and the second valve 72 needs to be opened, the sewage is re-injected into the clarifying tank 10 through the return line 70, and when the vacuum belt filter 30 can normally operate, the first valve 21 is opened and the second valve 71 is closed.
In some embodiments, a first valve 21 is disposed on the first line 20 between the location where the return line 70 connects to the first line 20 and the vacuum belt filter 30.
In some embodiments, a second valve 71 is provided on the return line 70.
In some embodiments, a cake collection tank 80 is disposed below the vacuum belt filter 30 for collecting cake formed by filtration through the vacuum belt filter 30.
In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood in a broad sense, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, the description of the terms "one embodiment," "some embodiments," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (7)

1. A preliminary water treatment system flow arrangement for an IGCC gasification plant, comprising:
filtering, namely injecting sewage from the bottom of the clarifying tank into a vacuum belt filter through a sewage pump through a first pipeline for filtering;
collecting filtrate, and injecting the filtered filtrate into a filtrate collecting tank through a second pipeline by a vacuum pump;
the filtrate in the filtrate collection tank is conveyed back to the clarifying tank through a filtrate pump for recycling;
one end of the return pipeline is connected with the clarifying tank, and the other end of the return pipeline is communicated with the first pipeline;
the bottom of the clarifying tank is connected with a vacuum belt filter through a first pipeline, the bottom end of the vacuum belt filter is connected with a filtrate collecting tank through a second pipeline, and the filtrate collecting tank is connected with the clarifying tank through a third pipeline.
2. The process arrangement for the preliminary water treatment system of an IGCC gasification plant of claim 1, wherein said sewage pump and first valve are disposed on said first pipeline.
3. The preliminary water treatment system flow arrangement for an IGCC gasification plant as recited in claim 1 wherein said vacuum pump is disposed on said second conduit.
4. The preliminary water treatment system flow arrangement for an IGCC gasification plant of claim 1, wherein said filtrate pump is disposed on said third conduit.
5. The preliminary water treatment system flow arrangement for an IGCC gasification plant as recited in claim 2 wherein said first valve is disposed on said first conduit between the location where said return conduit connects to said first conduit and said vacuum belt filter.
6. The preliminary water treatment system flow arrangement for an IGCC gasification unit as recited in claim 5 further comprising a second valve disposed on said return line.
7. The process arrangement for the preliminary water treatment system of the IGCC gasification plant of claim 6, further comprising a filter cake collection tank disposed below the vacuum belt filter for collecting filter cake formed by filtration by the vacuum belt filter.
CN202110163280.8A 2021-02-05 2021-02-05 Flow arrangement for primary water treatment system of Integrated Gasification Combined Cycle (IGCC) gasification device Pending CN112933731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110163280.8A CN112933731A (en) 2021-02-05 2021-02-05 Flow arrangement for primary water treatment system of Integrated Gasification Combined Cycle (IGCC) gasification device

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Application Number Priority Date Filing Date Title
CN202110163280.8A CN112933731A (en) 2021-02-05 2021-02-05 Flow arrangement for primary water treatment system of Integrated Gasification Combined Cycle (IGCC) gasification device

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CN112933731A true CN112933731A (en) 2021-06-11

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205269231U (en) * 2015-12-14 2016-06-01 河南晋开化工投资控股集团有限责任公司 Coal is pulp water filtration system for gasification
CN211971078U (en) * 2019-12-23 2020-11-20 青海海西东诺化工有限公司 Automatic reflux unit of emulsion explosive semi-manufactured goods

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205269231U (en) * 2015-12-14 2016-06-01 河南晋开化工投资控股集团有限责任公司 Coal is pulp water filtration system for gasification
CN211971078U (en) * 2019-12-23 2020-11-20 青海海西东诺化工有限公司 Automatic reflux unit of emulsion explosive semi-manufactured goods

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Application publication date: 20210611

RJ01 Rejection of invention patent application after publication