CN104909509B - A kind of processing system of DMTO catalyst production waste water - Google Patents
A kind of processing system of DMTO catalyst production waste water Download PDFInfo
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- CN104909509B CN104909509B CN201510359205.3A CN201510359205A CN104909509B CN 104909509 B CN104909509 B CN 104909509B CN 201510359205 A CN201510359205 A CN 201510359205A CN 104909509 B CN104909509 B CN 104909509B
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Abstract
The invention discloses a kind of processing system of DMTO catalyst production waste water, belong to technical field of chemical, including the settling tank with inlet, liquid outlet and slag-drip opening, the liquid outlet of settling tank passes through pipeline and is connected with device is evaporated under reduced pressure, and the outlet that device is evaporated under reduced pressure is connected with distillation water pot by pipeline；The slag-drip opening of settling tank is connected with residue collecting tank by pipeline, and the slag-drip opening that device is evaporated under reduced pressure is connected to residue collecting tank by pipeline.A whole set of processing system is not required to add any chemical agent, and evaporation time is short, and separation accuracy is high, and system footprint area is little, simple to operate, reliable, easy to maintenance, and the catalyst residue separated by this system is recycled after can carrying out roughing.
Description
Technical field
The invention belongs to technical field of chemical is and in particular to a kind of processing system of DMTO catalyst production waste water.
Background technology
China is the country of freshwater resources critical shortage, and water resource and water environmental problems have become the master restricting industrial development
Want one of factor, realize self-demand that waste water zero emission is industrial development and external requirement, waste water zero emission is by work
The waste water producing during skill is recycled after treatment.
DMTO is the technology doing raw materials for ethylene production and propylene with coal or substitute gas oil, preparing low carbon olefinic hydrocarbon with methanol
(DMTO) industrialization technology solves the technical bottleneck of olefin hydrocarbon making by coal, is the bridge connecting Coal Chemical Industry and petrochemical industry, is coalification
Industrial and commercial bank's industry and olefin hydrocarbon making by coal industry provide strong technical support.DMTO industrialization technology can alleviate China's naphtha resource
Deficiency, makes low-carbon alkene raw materials for production diversification.Under the background of current petroleum resources shortage, this technology is for realizing China
" oil replacement " strategy is it is ensured that the energy security of China has very great strategic importance.Petrochemical catalyst waste water exists
Its particularity is had on composition：A large amount of waste water are discharged, its water quality characteristics is temperature (30～60 in petrochemical catalyst production process
DEG C), suspended solids thing content height (more than 1000mg/L), substantially all between 0.5～2.5 μm, float contains its particle diameter
Amount is high, salinity is high, ammonia nitrogen height (organic amine, diethylamine, triethylamine), and Precipitation Separation Technique clearance is not high, so petrochemical industry
The process of catalyst production waste water has become a great problem of puzzlement environmental protection of enterprise problem, and early stage, enterprise can be by conventional life
Change is processed can be realized discharging substantially.In recent years, more and more tight with national environmental protection regulation, the environmental consciousness of people is continuous in addition
Strengthen, enterprise constantly strengthens to the control of water resource and management, the processing requirement more and more higher to waste water, from two grades of rows in past
It is put into present first grade discharging, or even requires to reuse after most of sewage realization process, the existing handling process of plant area is microfiltration
Method, mechanical admixture and float in water of can going out, but water outlet COD, diethylamine, triethylamine content overproof lead to this kind of water neither
Energy reuse, nor enter biochemical system.Therefore, conventional treatment process can not meet at petrochemical catalyst industrial wastewater
The requirement of reason.Usually, first the solid suspension in waste water is processed or reclaimed, then carried out biochemical treatment, then
Biochemical treatment water outlet is reprocessed, to reach reuse purpose.The subject matter that current waste water zero emission scheme exists
It is that waste water zero emission plant running is unstable, investment and operating cost are high, energy consumption is big, have certain environment risk etc..
Content of the invention
For the defect overcoming above-mentioned prior art to exist, it is an object of the invention to provide a kind of DMTO Catalyst Production
The processing system of waste water, this system structure is simple, processing ease, easy to maintenance, safe and reliable to operation, high treating effect, can
Eliminate secondary pollution, reduce plant area's environmental protection pressure.
The present invention is to be achieved through the following technical solutions：
A kind of processing system of DMTO catalyst production waste water, including reduction vaporization device with inlet, liquid outlet
And the settling tank of slag-drip opening, the liquid outlet of settling tank passes through pipeline and is connected with device is evaporated under reduced pressure, and the water outlet of device is evaporated under reduced pressure
Mouth is connected with distillation water pot by pipeline；The slag-drip opening of settling tank is connected with residue collecting tank by pipeline, and device is evaporated under reduced pressure
Slag-drip opening connected to residue collecting tank by pipeline.
Device is evaporated under reduced pressure normal pressure steam device, blowing plant and recirculated cooling water dress are connected to by pipeline
Put.
It is provided with the automatic liquid level instrument of PLC control in distilled water fills.
It is provided with the scraping blade being prevented from coking in the inwall that device is evaporated under reduced pressure.
Automatic discharge valve is set at the slag-drip opening that device is evaporated under reduced pressure.
It is provided with lifting water pump in settling tank with being evaporated under reduced pressure on the pipeline that device is connected.
Described settling tank is using tank or buffering pond in perpendicular stream settling tank, Horizontal sedimentation tank, tank
Compared with prior art, the present invention has following beneficial technique effect：
The processing system of the DMTO catalyst production waste water of the present invention, including the settling tank being sequentially connected by pipeline, is subtracted
Pressure vaporising device and distillation water pot, settling tank carry automatic discharge function, can regulating water quality, the water yield, can sharp separation come
In water, big portion bulky grain mechanical admixture and float, it is ensured that normal water inlet and the even running of device is evaporated under reduced pressure, can quickly be divided
The settling tank of big portion bulky grain mechanical admixture and float in water, uses water mechanical admixture and suspension content≤1500mg/
L；Settling tank removes big portion bulky grain mechanical admixture and the waste water of float passes through pipeline to device is evaporated under reduced pressure, and uses
Water mechanical admixture, suspension content≤1mg/L, COD content≤10000mg/L, triethylamine≤1mg/L, diethylamine≤0.5mg/
L.Condensed water after distillation also can enter the existing biochemical system of plant area, a whole set of processing system with direct reuse after diluting
It is not required to add any chemical agent, evaporation time is short, separation accuracy is high, system footprint area is little, simple to operate, reliable,
Easy to maintenance, the catalyst residue separated by this system can carry out recycling after roughing.
Further, device is evaporated under reduced pressure to be connected to normal pressure steam device, blowing plant by pipeline and follow
Ring chilled water unit, atmospheric steam system provides thermal source for device is evaporated under reduced pressure；Blowing plant provides power for slag-drip opening；
Recirculated cooling water device is used for the vapor that cooling evaporates.
Further, the present invention is provided with lifting water pump in settling tank with being evaporated under reduced pressure on the pipeline that device is connected, sedimentation
DMTO in tank produces waste water to be passed through to lift water pump and squeezes into reduction vaporization device, and the operating pressure of water pump is low, only need 0.1～
0.3Mpa, SR is little, energy-saving.
Further, the present invention be evaporated under reduced pressure device be internally provided with scraping blade, it is possible to achieve the quick discharge of residue with
And prevent device interior coking.
Further, the present invention also sets up automatic discharge valve at reduction vaporization device slag-drip opening, it is possible to achieve PLC is automatic
Control.
Brief description
Fig. 1 is the processing system structured flowchart of the DMTO catalyst production waste water of the present invention.
Wherein：1 is settling tank；2 is that device is evaporated under reduced pressure；3 is distillation water pot；4 is biochemical system；5 is atmospheric steam dress
Put；6 is blowing plant；7 is recirculated cooling water device；8 is residue collecting tank.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail：
Referring to Fig. 1, the processing system of the DMTO catalyst production waste water of the present invention, including with inlet, liquid outlet and
The settling tank 1 of slag-drip opening, the liquid outlet of settling tank 1 passes through pipeline and is connected with device 2 is evaporated under reduced pressure, and steams with decompression in settling tank 1
The pipeline that transmitting apparatus 2 are connected is provided with lifting water pump.The outlet that device 2 is evaporated under reduced pressure passes through pipeline and distillation water pot 3 phase
Even；The slag-drip opening of settling tank is connected with residue collecting tank 8 by pipeline, and the slag-drip opening that device 2 is evaporated under reduced pressure is connected by pipeline
To residue collecting tank 8.Device 2 is evaporated under reduced pressure be connected to normal pressure steam device 5, blowing plant 6 by pipeline and follow
Ring chilled water unit 7.Normal pressure steam device 5 provides thermal source for device 2 is evaporated under reduced pressure；Blowing plant 6 provides for slag-drip opening
Power；Recirculated cooling water device 7 is used for the vapor that cooling evaporates.The slag-drip opening of device 2 at setting is evaporated under reduced pressure automatically arrange
Slag valve.
Settling tank 1 passes through pipeline external residue collecting tank, and described settling tank 1 is using perpendicular stream settling tank, Horizontal sedimentation tank, tank
Middle tank or eddy flow tank, the size of settling tank and the position of inlet and outlet pipe lines can be according to actual machine impurity and suspension content sizes
Set particular location.
Further, described reduction vaporization device 2 is internally provided with scraping blade and can easily scrape residue, prevents inside
Coking.Slag-drip opening is automatically controlled by PLC system, and the residue discharged in the residue of discharge and settling tank 1 enters residue collecting tank 8,
Again sedimentation, separate after can use as crude product after dried, thus present system operationally need not stop
Machine, can carry out production operation in 24 hours.
Illustrate in conjunction with example：
Certain DMTO catalyst plant produces the waste water of catalyst, COD content 53000mg/L in water, mechanical admixture float
Content 3000mg/l, triethylamine content 7.73mg/L, diethyl amine content 2.49mg/L.It is heavy that DMTO Catalyst Production water first passes through
The pipeline of fall tank middle and upper part enters in tank, stops 4 hours, makes mechanical admixture and suspension content drop to 1500mg/L.Homogenizing delays
Rush tank and erect stream settling tank, Horizontal sedimentation tank, other gravitational settling facilities such as tank or eddy flow tank in tank.
Remove big portion bulky grain mechanical admixture and the waste water of float passes through lifting in the settling tank of automatic discharge function
Water pump, pipeline, to device is evaporated under reduced pressure, use water mechanical admixture, suspension content≤1mg/L, and COD content≤
10000mg/L, triethylamine≤1mg/L, diethylamine≤0.5mg/L.Through distillation after condensed water major part can with direct reuse,
The existing biochemical system of plant area is entered, a whole set of processing system is not required to add any chemical agent, and evaporation time is short after small part dilution,
Separation accuracy is high, and system footprint area is little, simple to operate, reliable, easy to maintenance, by urging that this system is separated
Agent residue recycles after can carrying out roughing.
Rarefaction of air, the higher high mountain of height above sea level can make with comparalive ease decocting in water boil, and land heating relatively exists
It is allowed to seethe with excitement under lower temperature.This is because the low boiling point leading to water of air pressure lowers, it is easier to allow boiling water.Same road
Reason, during by certain container decompression to vacuum (about -0.1MPa), water will seethe with excitement at about 50 DEG C about.Should by this general principle
With to distillation dehydration, concentration or drying, until the system of solidification is it is simply that decompression dehydration drying system.
The handling process that device is evaporated under reduced pressure is roughly divided into three process, first feed flow operation：First turn on vacuum pump,
Alembic is made to be maintained at a negative pressure state, then because material is sucked in alembic by suction function, material injection completes
Starting blender afterwards makes it keep turning clockwise.Second distillation process：It is passed through atmospheric steam in distillation tank base to tank
Body materials inside is evaporated operation, because tank body is already at negative pressure state, so material is being heated to 50 DEG C about beginnings
Boiling, the vapor evaporating passes through vacuum pumped, and is condensed into fluid storage in distillation after condenser heat exchange is lowered the temperature
It is delivered to outside battery limit (BL) by distilled water water pump in water pot.3rd road deslagging operation, continuous evaporation for a period of time after, due to material
In the enrichment in evaporation process of mechanical admixture and salinity, effective evaporation volume of alembic can be directly affected, so needing
Shutdown carries out deslagging, to ensure evaporation efficiency；Deslagging, by changing the direction of rotation of blender to carry out deslagging operation, so may be used
With the ratio of guarantee slag row more thoroughly, prevent because slag does not drain net and coking phenomenon occurs.
For a person skilled in the art, can technical scheme as described above, make other various corresponding
Change and deform, and all these change and deformation all should belong within the scope of the claims in the present invention protection.
Claims (4)
1. a kind of processing system of DMTO catalyst production waste water it is characterised in that include be evaporated under reduced pressure device (2) and carry into
The settling tank (1) of liquid mouth, liquid outlet and slag-drip opening, the liquid outlet of settling tank (1) passes through pipeline and device (2) phase is evaporated under reduced pressure
Even, the outlet that device (2) is evaporated under reduced pressure is connected with distillation water pot (3) by pipeline；The slag-drip opening of settling tank (1) passes through pipeline
It is connected with residue collecting tank (8), the slag-drip opening that device (2) is evaporated under reduced pressure is connected to residue collecting tank (8) by pipeline；
Device (2) is evaporated under reduced pressure be connected to normal pressure steam device (5), blowing plant (6) by pipeline and circulate cold
But water installations (7)；It is provided with the scraping blade being prevented from coking in the inwall that device (2) is evaporated under reduced pressure；Device (2) is being evaporated under reduced pressure
Automatic discharge valve is set at slag-drip opening.
2. a kind of processing system of DMTO catalyst production waste water according to claim 1 is it is characterised in that in distilled water
It is provided with the automatic liquid level instrument of PLC control in tank (3).
3. a kind of processing system of DMTO catalyst production waste water according to claim 1 is it is characterised in that in settling tank
(1) pipeline being connected with reduction vaporization device (2) is provided with lifting water pump.
4. the processing system of a kind of DMTO catalyst production waste water according to any one in claims 1 to 3, its feature
It is, described settling tank (1) is using tank or buffering pond in perpendicular stream settling tank, Horizontal sedimentation tank, tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510359205.3A CN104909509B (en) | 2015-06-25 | 2015-06-25 | A kind of processing system of DMTO catalyst production waste water |
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| CN201510359205.3A CN104909509B (en) | 2015-06-25 | 2015-06-25 | A kind of processing system of DMTO catalyst production waste water |
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| CN104909509A CN104909509A (en) | 2015-09-16 |
| CN104909509B true CN104909509B (en) | 2017-03-01 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098214A (en) * | 2014-07-28 | 2014-10-15 | 神华集团有限责任公司 | Catalyst waste water treatment system |
| CN204918279U (en) * | 2015-06-25 | 2015-12-30 | 西安瑞兰环保技术有限公司 | DMTO catalyst waste water's processing system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098214A (en) * | 2014-07-28 | 2014-10-15 | 神华集团有限责任公司 | Catalyst waste water treatment system |
| CN204918279U (en) * | 2015-06-25 | 2015-12-30 | 西安瑞兰环保技术有限公司 | DMTO catalyst waste water's processing system |
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