CN108996884A - Carbide slurry processing equipment and processing method and a kind of carbide slag slurries - Google Patents
Carbide slurry processing equipment and processing method and a kind of carbide slag slurries Download PDFInfo
- Publication number
- CN108996884A CN108996884A CN201810954861.1A CN201810954861A CN108996884A CN 108996884 A CN108996884 A CN 108996884A CN 201810954861 A CN201810954861 A CN 201810954861A CN 108996884 A CN108996884 A CN 108996884A
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- Prior art keywords
- slurry
- medicament
- carbide
- stripper
- liquid storage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10H—PRODUCTION OF ACETYLENE BY WET METHODS
- C10H21/00—Details of acetylene generators; Accessory equipment for, or features of, the wet production of acetylene
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention provides a kind of carbide slurry processing equipment, including slurry conveyance conduit, stripper and concentration basin, and there are also make-up tank, make-up tank upper layer preparation area, liquid storage area of lower layer, preparation area is connected with liquid storage area with coupling tube, and valve is housed in coupling tube；Liquid storage area is connected by pharmaceutical pipeline with stripper；Pharmaceutical pipeline is equipped with regulating valve, and regulating valve is connected with DCS control system；Carbide slurry processing method is also provided, is mixed polyacrylamide with water in preparation area, stirring rate 100rpm, it is 0.5~1.5 ‰ medicaments that concentration, which is made,；It is fed in the ratio that medicament and slurry ratio are 1:800 (volume ratio) to stripper；A kind of carbide slag slurries are also provided, for titre value in 60ti to 80ti, every 100mL slurry settles completion in 40 to 50 seconds, and settling obtained supernatant fluid turbidity is 5NTU, and the present invention reduces water consumption, and reduces production cost and is obviously improved clear liquid quality.
Description
Technical field
The invention belongs to chemical products technical field of resource comprehensive utilization, and in particular to a kind of generated by polyvinyl chloride by calcium carbide resin
Slurry processing method in production technology and a kind of carbide slag slurries product by this method acquisition.
Background technique
There are mainly two types of Production of PVC techniques, first is that carbide, raw materials for production are calcium carbide, crude salt；Second is that ethylene process,
Primary raw material is petroleum.The production of PVC is mainly based on ethylene process on international market, and domestic abundant by coal, limestone resource
And the endowment of resources limitation of oil-poor, few gas, then mainly based on carbide.My company now uses calcium carbide process PVC production technology, electricity
Stone and water reaction can generate a large amount of by-product calcium hydroxide, be commonly called as carbide slag slurries.
Solubility is small in water for carbide slag slurries, and solubility with temperature rises and reduces, so the by-product of calcium carbide hydrolysis
Calcium hydroxide particle is gradually precipitated from solution.From true solution to colloidal solution transition, particulate is gradually collided with each other, is squeezed system
Pressure, promote particle further tie gather, grow up, dehydration；In addition, solid impurity (such as the silicon iron, coke of reaction are not participated in calcium carbide
Deng) be also mingled in slurry, the gradually retrogradation of the sediment of generation.
Most of domestic calcium carbide process PVC producer is separated by solid-liquid separation carbide slag slurries using filter press, and supernatant fluid reuse is extremely
Generator, carbide slag filter cake can be used as the raw material of building materials, road construction and other production chemical products.Processing method is single,
And increase equipment investment, environmental pollution is be easy to cause in transportational process.
In conjunction with my group's circular economy characteristic, carbide slag slurries are delivered in slurry concentration basin through pump from generator bottom and carry out
Sedimentation, wherein supernatant fraction is back to generator, and bottom slurry gives selling outside in the form of byproduct, extremely by pipeline
Downstream user.
In actual production with the continuous promotion of production capacity, slurry system cache amount is limited, and slurry effect of settling is poor, clearly
Liquid quality defect, the processing of slurry form new restriction of production bottleneck.Furthermore slurry, clear liquid conveyance conduit and spray head easily fouling
Blocking, frequent maintenance cleaning increase operating cost.
Summary of the invention
Slurry titre is uncontrollable in existing generated by polyvinyl chloride by calcium carbide resin manufacturing processes, clear liquid quality is deficient to solve by the present invention
Good, the frequent fouling blockage problem of relevant device pipeline.
The present invention is to improve clear liquid quality, provides a kind of slurry processing equipment and slurry processing method and a kind of slurry
Product.
Specific technical solution of the present invention is:
A kind of carbide slurry processing equipment, including slurry conveyance conduit, stripper and concentration basin, slurry conveyance conduit connect
It is taken with stripping in logical slurry source, characterized in that medicament entrance is additionally provided on stripper, medicament entrance is by pharmaceutical pipeline and prepares
Slot is connected, and the make-up tank is divided into the upper layer preparation area for deploying medicament, the liquid storage area of lower layer for storing medicament；Preparation area
It is connected with liquid storage area with coupling tube, valve is housed in coupling tube；Pharmaceutical pipeline is located in liquid storage area, and pharmaceutical pipeline, which is equipped with, to be adjusted
Valve, regulating valve are connected with DCS control system, and DCS control system is according to the aperture of the flow control regulating valve of slurry conveyance conduit.
Preferably, heat preservation heat tracing mechanism is equipped in preparation area.
This device structure is simple, and medicament is prepared in make-up tank by manually supervising, guarantees the medicament for feeding stripper to slurry
Effectively help it is heavy, this programme by DCS system adjust pharmaceutical use, guarantee product slurry reach expected standard.
Slurry processing method in a kind of generated by polyvinyl chloride by calcium carbide production of resins, 1) polyacrylamide and water are mixed in preparation area
It closes, stirring rate 100rpm, it is 0.5~1.5 ‰ medicaments that concentration, which is made,；2) prepared medicament enters the storage of liquid storage area；3) will
Medicament is for stripper, and medicament and slurry ratio are 1:800 (volume ratio) when supply；4) slurry natural subsidence in concentration basin, respectively
Export supernatant liquor and lower layer's underflow.
Preferably, when preparing medicament, the mixing temperature of polyacrylamide and water is preferred: 30~50 DEG C.
Flocculant (being known as medicament in the present invention) is added in the method in the acetylene gas recycling step that slurry is handled, and advises
The proportion for having determined medicament and slurry, the slurry titre Exponential Stability and controllable that stripping tower bottom is discharged.
A kind of carbide slag slurries, titre value settle completion in 60ti to 80ti, every 100mL slurry in 40 to 50 seconds,
Settling obtained supernatant fluid turbidity is 5NTU.
This carbide slag slurries product titre is stablized, and a large amount of water consumptions can be saved in production technology, reduces production cost, this calcium carbide
Gained clear liquid has clear improvement compared to original product clear liquid turbidity for 20NTU after the sedimentation of slurry product, this carbide slag slurries is heavy
The drop time foreshortens to 20 the percent of existing operating condition.
Specific embodiment
Technical solution of the present invention is described in detail below,
Traditional slurry processing equipment includes slurry conveyance conduit, stripper and concentration basin, and slurry conveyance conduit is connected to slag
Slurry source is taken with stripping, and the slurry solution that process generates occurs and enters from stripper top, returns to greatest extent under vacuum conditions
The acetylene gas dissolved in slurry is received, the slurry of tower bottom discharge is delivered to concentration basin, and natural subsidence mistake is completed in concentration basin
Journey, supernatant are recycled to generation process through settling tank again by overflow, are recycled as acetylene generator production water, and dense
The dense slurry of contracting bottom of pond portion is exported through discharging pump, can be used for other production and applications.
The present invention uses polyacrylamide for flocculant, places in slurry processing, needs to dissolve through water, the present invention is to existing
There is equipment to be transformed, joined the structure for being used to prepare slurry processing medicament, also while devising medicament supply structure, medicine
The control structures such as agent allotment.
Specifically: creating make-up tank again on the basis of original processing equipment, make-up tank of the invention is divided into for adjusting
The upper layer preparation area of dose out powders, the liquid storage area of lower layer for storing medicament；Preparation area is connected with liquid storage area with coupling tube, coupling tube
It is upper that valve is housed；Pharmaceutical pipeline is equipped in liquid storage area, pharmaceutical pipeline is connected with stripper.The make-up tank of double-layer structure can ensure poly-
Acrylamide and water being sufficiently mixed before entering stripper.Medicament entrance is additionally arranged on stripper for connecting pharmaceutical pipeline；
Pharmaceutical pipeline is equipped with regulating valve, and regulating valve is connected with DCS control system, and DCS control system is according to the stream of slurry conveyance conduit
Amount controls to adjust valve opening.
In this scheme, the valve in coupling tube is manually-operated gate, is opened after the completion of preparation area medicament is prepared, the time is not solid
Fixed, frequency is not fixed.Regulating valve on pharmaceutical pipeline is remotely controlled by DCS system, and control condition is devised in DCS system,
The supply of medicament is adjusted in real time.
Polyacrylamide mixes in preparation area with water, and agitating device is usually arranged in preparation area, and stirring rate is selected as
100rpm.Further, heat preservation heat tracing mechanism is additionally provided in preparation area, heat preservation heat tracing mechanism selects existing structure, it is desirable that
With make-up tank energy Matching installation, when the dissolution that polyacrylamide is not achieved in ambient temperature requires, the guarantee of heat tracing mechanism is matched
Area processed works normally.
The present invention also provides slurry processing methods in a kind of generated by polyvinyl chloride by calcium carbide production of resins: 1) in preparation area by poly- third
Acrylamide is mixed with water, stirring rate 100rpm, and it is 0.5~1.5 ‰ medicaments that concentration, which is made,；2) prepared medicament enters liquid storage
Area's storage；3) by medicament for stripper, medicament and slurry ratio are 1:800 (volume ratio) when supply；4) slurry in concentration basin from
So sedimentation exports supernatant liquor and lower layer's underflow respectively.
There is following difference in slurry made from carbide slag slurries product produced by the present invention and conventional processes:
1) existing stripper discharge slurry is natural subsidence, because equipment produce load is continuous and the adjustment of not timing,
The slurry titre fluctuation of discharge is bigger, and titre range is extremely unstable, it will usually fluctuate in 40~70ti range.The present invention provides
Slurry titre between 60ti~80ti, and titre value variation can be controlled by production equipment.
2) sedimentation of original every 100mL slurry is completed to need 260 seconds, and every 100mL slurry sedimentation provided by the invention is completed
Need about 50 seconds.
3) the clear liquid turbidity that overflow goes out at the top of original concentration basin is 20NTU, is concentrated after slurry sedimentation provided by the invention
Overflow clear liquid turbidity in pond is 5NTU.It can be seen that concentration basin upper clear supernate clarity is obviously improved, its calcium hydroxide content is reduced, in turn
Alleviate pipeline scaling rate.
The present invention is maintaining the existing concentration basin constancy of volume, and effective sedimentation of insoluble matter is realized under different produce loads,
Underflow amount is sent in guarantee outside.
Technical solution investment provided by the invention is small, realizes that the carbide slag slurries drop of discharge is crossed controllably, significant saving production is used
Water improves clear liquid quality, can guarantee that concentration basin inputs good clear liquid, underflow under different produce loads.
Claims (5)
1. a kind of carbide slurry processing equipment, including slurry conveyance conduit, stripper and concentration basin, the connection of slurry conveyance conduit
Slurry source is taken with stripping, it is characterized in that: being additionally provided with medicament entrance on stripper, medicament entrance passes through pharmaceutical pipeline and make-up tank
It is connected, the make-up tank is divided into the upper layer preparation area for deploying medicament, the liquid storage area of lower layer for storing medicament；Preparation area with
Liquid storage area is connected with coupling tube, and valve is housed in coupling tube；Pharmaceutical pipeline is located in liquid storage area, and pharmaceutical pipeline, which is equipped with, to be adjusted
Valve, regulating valve are connected with DCS control system, and DCS control system is according to the aperture of the flow control regulating valve of slurry conveyance conduit.
2. carbide slurry processing equipment as described in claim 1, it is characterized in that: being equipped with heat preservation heat tracing mechanism in preparation area.
3. a kind of carbide slurry processing method, follows these steps:
1) polyacrylamide is mixed with water in preparation area, stirring rate 100rpm, it is 0.5~1.5 ‰ medicaments that concentration, which is made,；
2) prepared medicament enters the storage of liquid storage area；
3) by medicament for stripper, medicament and slurry ratio are 1:800 (volume ratio) when supply；
4) slurry natural subsidence in concentration basin exports supernatant liquor and lower layer's underflow respectively.
4. carbide slurry processing method as claimed in claim 3, it is characterized in that: when preparing medicament, polyacrylamide and water
Preferably 30 DEG C~50 DEG C of mixing temperature.
5. a kind of carbide slag slurries, it is characterized in that: its titre value is in 60ti to 80ti；Every 100mL slurry settles in 40 to 50 seconds
It completes, settling obtained supernatant fluid turbidity is 5NTU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810954861.1A CN108996884A (en) | 2018-08-21 | 2018-08-21 | Carbide slurry processing equipment and processing method and a kind of carbide slag slurries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810954861.1A CN108996884A (en) | 2018-08-21 | 2018-08-21 | Carbide slurry processing equipment and processing method and a kind of carbide slag slurries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108996884A true CN108996884A (en) | 2018-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810954861.1A Pending CN108996884A (en) | 2018-08-21 | 2018-08-21 | Carbide slurry processing equipment and processing method and a kind of carbide slag slurries |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2581442Y (en) * | 2002-11-22 | 2003-10-22 | 张宇 | Gravity setting concentration extruding equipment for residual liquid |
| RU2312819C1 (en) * | 2006-08-14 | 2007-12-20 | Государственное образовательное учреждение высшего профессионального образования "Южно-Российский государственный технический университет (Новочеркасский политехнический институт)" | Method of treating effluents from pig-breeding complexes and farms for agricultural applications |
| CN102660327A (en) * | 2012-05-11 | 2012-09-12 | 唐山三友氯碱有限责任公司 | Slurry acetylene recycling device |
| CN203451266U (en) * | 2013-03-08 | 2014-02-26 | 大地工程开发(集团)有限公司天津分公司 | Automatic flocculating agent medicine adding system capable of feeding conveniently |
-
2018
- 2018-08-21 CN CN201810954861.1A patent/CN108996884A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2581442Y (en) * | 2002-11-22 | 2003-10-22 | 张宇 | Gravity setting concentration extruding equipment for residual liquid |
| RU2312819C1 (en) * | 2006-08-14 | 2007-12-20 | Государственное образовательное учреждение высшего профессионального образования "Южно-Российский государственный технический университет (Новочеркасский политехнический институт)" | Method of treating effluents from pig-breeding complexes and farms for agricultural applications |
| CN102660327A (en) * | 2012-05-11 | 2012-09-12 | 唐山三友氯碱有限责任公司 | Slurry acetylene recycling device |
| CN203451266U (en) * | 2013-03-08 | 2014-02-26 | 大地工程开发(集团)有限公司天津分公司 | Automatic flocculating agent medicine adding system capable of feeding conveniently |
Non-Patent Citations (3)
| Title |
|---|
| 孟繁荣: "《石油化工装置过程控制设计手册》", 30 November 1995, 中国石化出版社 * |
| 李长青等: ""电石渣浆脱水性能的研究"", 《建筑节能》 * |
| 郝凤印: "《选煤手册 工艺与设备》", 30 April 1993, 煤炭工业出版社 * |
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Application publication date: 20181214 |