CN107970860A - A kind of system of continuous automatic dilution hydrazine hydrate - Google Patents
A kind of system of continuous automatic dilution hydrazine hydrate Download PDFInfo
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- CN107970860A CN107970860A CN201711268540.8A CN201711268540A CN107970860A CN 107970860 A CN107970860 A CN 107970860A CN 201711268540 A CN201711268540 A CN 201711268540A CN 107970860 A CN107970860 A CN 107970860A
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- hydrazine hydrate
- connecting pipe
- tank
- diluent
- basin
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- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 title claims abstract description 169
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 title claims abstract description 166
- 238000010790 dilution Methods 0.000 title claims abstract description 31
- 239000012895 dilution Substances 0.000 title claims abstract description 31
- 239000003085 diluting agent Substances 0.000 claims abstract description 44
- 230000003068 static effect Effects 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 230000003139 buffering effect Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims 1
- 230000001934 delay Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 17
- 238000004458 analytical method Methods 0.000 description 13
- 239000000243 solution Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000002329 infrared spectrum Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- PFLUPZGCTVGDLV-UHFFFAOYSA-N acetone azine Chemical compound CC(C)=NN=C(C)C PFLUPZGCTVGDLV-UHFFFAOYSA-N 0.000 description 1
- 230000003178 anti-diabetic effect Effects 0.000 description 1
- 239000003472 antidiabetic agent Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 230000002363 herbicidal effect Effects 0.000 description 1
- 239000004009 herbicide Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical compound C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000002760 rocket fuel Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 201000008827 tuberculosis Diseases 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/712—Feed mechanisms for feeding fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/2132—Concentration, pH, pOH, p(ION) or oxygen-demand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/714—Feed mechanisms for feeding predetermined amounts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/75—Discharge mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of system of continuous automatic dilution hydrazine hydrate, including hydrazine hydrate surge tank, static mixer, hydrazine hydrate basin, diluent tank, DCS and connecting pipe, hydrazine hydrate surge tank, static mixer and hydrazine hydrate basin to be interconnected；Diluent tank is connected with static mixer；Connecting pipe close to hydrazine hydrate surge tank one end is equipped with a feeding engine, and the connecting pipe between feeding engine and static mixer is equipped with No.1 near infrared spectrometer, No.1 flowmeter and No.1 flow control valve；Connecting pipe between diluent tank and static mixer is equipped with No. two flowmeters and No. two flow control valves；Connecting pipe between static mixer and hydrazine hydrate basin is equipped with No. two near infrared spectrometers.Hydrazine hydrate is configured using the system, it is ensured that the accuracy of concentration of hydrazine hydrate, it is exceeded and then influence the yield and economic benefit of hydrazine hydrate to avoid concentration of hydrazine hydrate, also, the degree of automation of the system is high, and operating personnel will not be damaged.
Description
Technical field
The invention belongs to chemical products production field, more particularly to a kind of system of continuous automatic dilution hydrazine hydrate.
Background technology
Hydrazine hydrate is as a kind of important fine chemical material, its application is very extensive, such as：For synthesize AC, D1PA,
The foaming agents such as TSH；The cleaning treatment agent of deoxidation and carbon dioxide removal as boiler and reaction kettle；In medical industry, it is used for
Produce treating tuberculosis, the medicine of anti-diabetic；In pesticide industry, for producing herbicide, plant growth blender and sterilization, killing
Worm, raticide；In aerospace field, for producing rocket fuel, developed dye, rubber chemicals etc..
Hydrazine hydrate industrial process mainly has 4 kinds of Raschig process, urea method, ketazine process and hydrogen peroxide method, at present state
Interior mainly to prepare hydrazine hydrate using urea method technique, the concentration of hydrazine hydrate prepared is usually between 82%~85%, for this reason, needing
Pure water diluent is added into hydrazine hydrate solution to be configured to the product of various concentrations.It is but special because of hydrazine hydrate property
Property, concentration of hydrazine hydrate can be directly measured there is presently no a kind of instrument, the concentration mensuration of hydrazine hydrate generally uses analysis by titration
Complete.
At present, the dilution of hydrazine hydrate generally adds water preparation using manual analysis, and dilution time is long, technical staff's work is strong
Degree is big；Meanwhile because the accuracy by hydrazine hydrate craft concentration analysis is poor, finished pot measuring accuracy is relatively low and temperature is influenced
The limitation of factors, causes the control accuracy to concentration of hydrazine hydrate inadequate；By taking 80% hydrazine hydrate as an example, HG/T 3259-2012
It is required that concentration of hydrazine hydrate >=80.0%, according to manual analysis, prepares hydrazine hydrate, the concentration of hydrazine hydrate dispatched from the factory is 80.0~80.5%
Between, concentration of hydrazine hydrate highest can exceed 0.5 percentage point of normal concentration, so as to influence the yield and economic benefit of hydrazine hydrate；
In addition, hydrazine hydrate belongs to poisonous and harmful chemicals, according to manual analysis, hydrazine hydrate is prepared, operating personnel are sampling and analyzing
Cheng Zhong, can inevitably touch hydrazine hydrate solution or suction hydrazine hydrate steam, so that the health to operating personnel damages.
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of can continuously, automatic, dilution hydrazine hydrate system, use
The system configures hydrazine hydrate, it is ensured that the accuracy of concentration of hydrazine hydrate, it is exceeded and then influence water to avoid concentration of hydrazine hydrate
Close the yield and economic benefit of hydrazine；Meanwhile system whole process uses automation mechanized operation, it is diluted automatic to substantially increase hydrazine hydrate
Change level, but also the health of operating personnel will not be damaged.
The technical solution adopted by the present invention to solve the technical problems is：A kind of system of continuous automatic dilution hydrazine hydrate,
Including hydrazine hydrate surge tank, static mixer, hydrazine hydrate basin, diluent tank, DCS and connecting pipe, the hydrazine hydrate
Surge tank, static mixer and hydrazine hydrate basin pass through the connecting pipe successively sequential communication；The diluent tank leads to
Connecting pipe is crossed to connect with static mixer；Connecting pipe close to hydrazine hydrate surge tank one end is equipped with a feeding engine, institute
The connecting pipe stated between feeding engine and static mixer is equipped with No.1 near infrared spectrometer, No.1 flow control valve and one
Number flowmeter, and the No.1 flowmeter is located at after the No.1 flow control valve；The diluent tank is mixed with static state
Connecting pipe between clutch is equipped with No. two flow control valves and No. two flowmeters, and described No. two flowmeters are positioned at described
No. two flow control valves after；Connecting pipe between static mixer and the hydrazine hydrate basin is equipped with one No. two closely
Infrared spectrometer；The feeding engine, No.1 flow control valve, No.1 flowmeter, No. two flow control valves, No. two flowmeters,
No.1 near infrared spectrometer and No. two near infrared spectrometers are shown and are controlled by the DCS.
Further, it is additionally provided with a company in the connecting pipe between No. two near infrared spectrometers and hydrazine hydrate basin
Branch pipe is connect, the other end of the connecting branch is connected with hydrazine hydrate surge tank；It is connected on connecting branch in it with connecting pipe
One end is equipped with a hydrazine hydrate and buffers tank valve, the connection between hydrazine hydrate basin and connecting pipe and the joint of connecting branch
Pipeline is equipped with a hydrazine hydrate basin valve, and hydrazine hydrate buffering tank valve and hydrazine hydrate basin valve are by described
DCS control.
Further, the connecting pipe between the hydrazine hydrate surge tank and feeding engine is equipped with a hydrazine hydrate outlet valve
, in dilute equipped with one close to one end of diluent tank in the connecting pipe between the diluent tank and No. two flow control valves
Agent outlet valve is released, the hydrazine hydrate outlet valve and diluent outlet valve are controlled by the DCS.
Further, one, No. two flowmeter and one, No. two flow control valve are high precision flow and high-precision
Spend flow control valve.
Further, the diluent in the diluent tank is pure water diluent.
The beneficial effects of the invention are as follows：Near infrared spectrometer is applied to by the continuous automatic dilution hydrazine hydrate system of the present invention
The analysis of concentration of hydrazine hydrate and measure, so as to ensure that the accuracy of concentration of hydrazine hydrate analysis and measurement result；Meanwhile the system
Near infrared spectrometer and DCS cooperation are used again, so as to furthermore achieved that the on-line analysis to concentration of hydrazine hydrate and online survey
It is fixed, the labor intensity of operating personnel is greatly reduced, the diluted automatization level of hydrazine hydrate greatly improved.Secondly, the system
Hydrazine hydrate and pure water diluent minimum controlling flux is selected to be adjusted up to 1kg grades of high-precision flowmeter and high-precision flow
Valve, can further lift the control accuracy of concentration of hydrazine hydrate, so that ensure that the concentration of hydrazine hydrate after dilution is not exceeded, and then
Ensure the yield of hydrazine hydrate, achieve the purpose that to increase economic efficiency；Equally using the 80% concentration hydrazine hydrate of HG/T3259-2012 as
Example, the concentration of hydrazine hydrate formed using the system configuration can control between 80.00~80.05%, it is clear that be configured using the system
The accuracy of the concentration of hydrazine hydrate formed can be effectively ensured.Again, the system only needs operating personnel's operation DCS can be real
Now the continuous automatic dilution of hydrazine hydrate, operating personnel's whole process are not contacted with hydrazine hydrate solution, hydrazine hydrate steaming will not be sucked
Vapour, ensure that the personal safety of operating personnel.
Brief description of the drawings
Fig. 1 is the structure diagram of the continuous automatic dilution hydrazine hydrate system of the present invention；
In figure mark for：1- hydrazine hydrate surge tanks, 2- static mixing tanks, 3- hydrazine hydrate basins, 4- diluent tanks, 5- connecting tubes
Road, 6- feeding engines, 7- No.1 near infrared spectrometers, 8- No.1 flow control valves, 9- No.1 flowmeters, No. bis- flow-rate adjustments of 10-
Valve, No. bis- flowmeters of 11-, No. bis- near infrared spectrometers of 12-, 13- connecting branches, 14- hydrazine hydrates buffering tank valve, 15- hydrations
Hydrazine basin valve, 16- hydrazine hydrate outlet valves, 17- diluent outlet valves.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
As shown in Figure 1, the system of the continuous automatic dilution hydrazine hydrate of the present invention, including hydrazine hydrate surge tank 1, static mixing
Device 2, hydrazine hydrate basin 3, diluent tank 4, DCS（Not shown in figure）And connecting pipe 5, it is the hydrazine hydrate surge tank 1, quiet
State mixer 2 and hydrazine hydrate basin 3 pass through the connecting pipe 5 successively sequential communication；The diluent tank 4 passes through connection
Pipeline 5 is connected with static mixer 2, and the diluent in diluent tank 4 is pure water diluent；Close to 1 one end of hydrazine hydrate surge tank
Connecting pipe 5 be equipped with a feeding engine 6, the connecting pipe 5 between hydrazine hydrate surge tank 1 and the feeding engine 6 is equipped with
One hydrazine hydrate outlet valve 16, the connecting pipe 5 between feeding engine 6 and static mixer 2 are equipped with No.1 near infrared spectrum
Instrument 7, No.1 flow control valve 8 and No.1 flowmeter 9, and the No.1 flowmeter 9 is located at the No.1 flow-rate adjustment
After valve 8, No.1 flowmeter 9 and No.1 flow control valve 8 are high precision flow and high-precision flow control valve, so that hydration
The minimum controlling flux of hydrazine can reach 1kg grades；Connecting pipe 5 between the diluent tank 4 and static mixer 2 is equipped with
No. two flow control valves 10 and No. two flowmeters 11, and described No. two flowmeters 11 are located at No. two flow control valves 10
Afterwards, No. two flowmeters 11 and No. two flow control valves 10 are high precision flow and high-precision flow control valve, so that pure water
The minimum controlling flux of diluent can reach 1kg grades；Connecting pipe 5 between diluent tank 4 and No. two flow control valves 10
On in being equipped with a diluent outlet valve 17 close to one end of diluent tank 4；The static mixer 2 and hydrazine hydrate basin 3
Between connecting pipe 5 be equipped with No. two near infrared spectrometers 12；The hydrazine hydrate outlet valve 16, feeding engine 6, one
Number flow control valve 8, No.1 flowmeter 9, diluent outlet valve 17, two flow control valve 10, two flowmeter 11, No.1
Near infrared spectrometer 7 and No. two near infrared spectrometers 12 are shown and are controlled by the DCS.
A connection branch is additionally provided with connecting pipe 5 between No. two near infrared spectrometers 12 and hydrazine hydrate basin 3
Pipe 13, the other end of the connecting branch 13 are connected with hydrazine hydrate surge tank 1；In itself and 5 phase of connecting pipe on connecting branch 13
One end even is equipped with a hydrazine hydrate and buffers tank valve 14, hydrazine hydrate basin 3 and connecting pipe 5 and the joint of connecting branch 13
Between connecting pipe 5 be equipped with a hydrazine hydrate basin valve 15, hydrazine hydrate buffering tank valve 14 and hydrazine hydrate storage
Tank valve 15 is controlled also by the DCS.
The course of work of the continuous automatic dilution hydrazine hydrate system of the present invention is as follows：
First, operating personnel input the concentration of hydrazine hydrate for needing to prepare on DCS（That is target concentration of hydrazine hydrate）, then open water
Hydrazine outlet valve 16 and No.1 near infrared spectrometer 7 are closed, starts feeding engine 6, No.1 flow control valve is regulated by DCS afterwards
8 aperture, to set the hydrazine hydrate flow of what a suitable size, and by No.1 flowmeter 9 by the flow signal of hydrazine hydrate
Feed back to DCS to be shown, hydrazine hydrate is pumped into static mixer 2 by feeding engine 6；When hydrazine hydrate, to flow to No.1 closely red
During external spectrum instrument 7, No.1 near infrared spectrometer 7 automatically can carry out online concentration analysis and online concentration mensuration to hydrazine hydrate,
And concentration of hydrazine hydrate signal is fed back into DCS and is shown；DCS understands hydrazine hydrate flow signal, the concentration that basis collects afterwards
Signal and target concentration of hydrazine hydrate signal calculate the flow of required pure water diluent automatically, then by required pure water diluent
Flow signal is automatically converted into the opening amount signal of No. two flow control valves 10, automatically adjusts No. two flow-rate adjustments by DCS afterwards
The aperture of valve 10, makes its aperture be in and No. two corresponding valve openings of 10 opening amount signal of flow control valve；Afterwards
Pure water diluent outlet valve 17 is opened, pure water diluent flow is passed through No. two flowmeters 11 at this time to static mixer 2
The flow signal of pure water diluent is fed back to DCS to be shown, it is ensured that the aperture of No. two flow control valves 10 is errorless；It is pure afterwards
Diluent water is flowed into static mixer 2 and quickly mixed with hydrazine hydrate solution, and after mixing, the hydrazine hydrate after dilution is molten
Liquid continues flow forward by connecting pipe 5, when the hydrazine hydrate solution after dilution flow to No. two near infrared spectrometers 12, opens
No. two near infrared spectrometers 12, No. two near infrared spectrums 12 automatically can carry out the hydrazine hydrate solution after dilution online concentration point
Analysis and online concentration mensuration, and the concentration of hydrazine hydrate signal after dilution is fed back into DCS and is shown；If the hydration after dilution
Error between hydrazine concentration and target concentration of hydrazine hydrate is then determined as that the concentration of hydrazine hydrate after dilution is qualified in allowed band,
Hydrazine hydrate basin valve 15 is opened at this time, the hydrazine hydrate solution of concentration qualification is flowed into hydrazine hydrate basin 3 and is stored, is easy to
Follow-up packaging process；If the error between concentration of hydrazine hydrate and target concentration of hydrazine hydrate after dilution is beyond permission model
Enclose, be then determined as that the concentration of hydrazine hydrate after dilution is unqualified, close hydrazine hydrate basin valve 15 at this time, open hydrazine hydrate surge tank
Valve 14, makes the underproof hydrazine hydrate solution of concentration return in hydrazine hydrate surge tank 1, reconfigures again afterwards.Note：The water
Close hydrazine outlet valve 16, feeding engine 6, No.1 flow control valve 8, diluent outlet valve 17, No. two flow control valves 10, No.1s
7, No. two near infrared spectrometers 12 of near infrared spectrometer, hydrazine hydrate buffering tank valve 14 and hydrazine hydrate basin valve 15 pass through
The DCS controls.It follows that the present invention realizes continuous, automatic, the stable dilution of hydrazine hydrate.
Beneficial effects of the present invention are：
First, near infrared spectrometer is applied to analysis and the measure of concentration of hydrazine hydrate by the system, so as to ensure that hydrazine hydrate is dense
Degree analysis and the accuracy of measurement result.Using near infrared spectrometer measure concentration of hydrazine hydrate principle be：Hydrazine hydrate energy and water
Mixed with any proportioning, the molecular structure of hydrazine hydrate is sufficiently stable, its chemical formula is：N2H4•H2O, hydrazine hydrate is in certain temperature
Under degree, pressure and flow velocity, the moisture content in it can be evenly distributed in hydrazine hydrate, thus, can use near-infrared absorption
Principle measures the water content in hydrazine hydrate, using two groups of specific wavelength, since hydrazine hydrate is in the measurement ripple of a certain fixation
Do not absorbed under length, and moisture content has absorption under the measurement wavelength of the fixation, therefore, according to langbobier law, the hundred of moisture content
Point can be directly proportional to the absorption value of light to itself than content value, near infrared spectrometer by measuring absorption value of the moisture content to light,
To measure the degree of moisture content, it is contemplated that the content of other materials is very low in mixed liquor, is similar to zero, therefore, subtracts water
The content of part, the remaining concentration for being exactly the content of hydrazine hydrate, hydrazine hydrate being measured using near infrared spectrometer, will not be subject to water
The influence of the factors such as temperature, pressure and the flow velocity of hydrazine is closed, ensures that what near infrared spectrometer measured concentration of hydrazine hydrate
Accuracy, the measurement accuracy of concentration of hydrazine hydrate is up to 0~0.05%.Meanwhile the system is again by near infrared spectrometer and DCS cooperation
Use, so as to furthermore achieved that the on-line analysis to concentration of hydrazine hydrate and on-line determination, greatly reduce the labor of operating personnel
Fatigue resistance, greatly improved the diluted automatization level of hydrazine hydrate.
Secondly, the system selects hydrazine hydrate and pure water diluent minimum controlling flux up to 1kg grades of high-precision flow
Meter and high-precision flow control valve, can further lift the control accuracy of concentration of hydrazine hydrate, so as to ensure the water after dilution
Conjunction hydrazine concentration is not exceeded, and then ensures the yield of hydrazine hydrate, achievees the purpose that to increase economic efficiency；Equally with HG/T3259-
Exemplified by 2012 80% concentration hydrazine hydrate, using the concentration of hydrazine hydrate that forms of the system configuration can control 80.00~80.05% it
Between, it is clear that the accuracy of the concentration of hydrazine hydrate formed using the system configuration can be effectively ensured.
Again, the system only needs operating personnel to operate the DCS i.e. achievable continuous automatic dilution to hydrazine hydrate, operating personnel
Whole process is not contacted with hydrazine hydrate solution, will not be sucked hydrazine hydrate steam, be ensure that the personal safety of operating personnel.
It should be appreciated that the above-mentioned embodiment of the present invention is used only for exemplary illustration or explains the present invention's
Principle, without being construed as limiting the invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent substitution etc., should all be included in the protection scope of the present invention.
Claims (5)
- A kind of 1. system of continuous automatic dilution hydrazine hydrate, it is characterised in that：Including hydrazine hydrate surge tank（1）, static mixer （2）, hydrazine hydrate basin（3）, diluent tank（4）, DCS and connecting pipe（5）, the hydrazine hydrate surge tank（1）, it is static mixed Clutch（2）With hydrazine hydrate basin（3）Pass through the connecting pipe（5）Sequential communication successively；The diluent tank（4）Pass through Connecting pipe（5）With static mixer（2）Connection；Close to hydrazine hydrate surge tank（1）The connecting pipe of one end（5）It is equipped with one Feeding engine（6）, the feeding engine（6）With static mixer（2）Between connecting pipe（5）It is equipped with No.1 near infrared spectrometer （7）, No.1 flow control valve（8）And No.1 flowmeter（9）, and the No.1 flowmeter（9）Positioned at the No.1 stream Adjustable valve（8）Afterwards；The diluent tank（4）With static mixer（2）Between connecting pipe（5）It is equipped with No. two flows Regulating valve（10）With No. two flowmeters（11）, and described No. two flowmeters（11）Positioned at No. two flow control valves（10） Afterwards；The static mixer（2）With hydrazine hydrate basin（3）Between connecting pipe（5）It is equipped with No. two near infrared lights Spectrometer（12）；The feeding engine（6）, No.1 flow control valve（8）, No.1 flowmeter（9）, No. two flow control valves（10）、 No. two flowmeters（11）, No.1 near infrared spectrometer（7）And No. two near infrared spectrometers（12）Shown by the DCS And control.
- 2. the system of continuous automatic dilution hydrazine hydrate according to claim 1, it is characterised in that：No. two near infrared lights Spectrometer（12）With hydrazine hydrate basin（3）Between connecting pipe（5）On be additionally provided with a connecting branch（13）, the connecting branch （13）The other end and hydrazine hydrate surge tank（1）Connection；Connecting branch（13）On in itself and connecting pipe（5）Connected one end is set There is a hydrazine hydrate surge tank（14）, hydrazine hydrate basin（3）With connecting pipe（5）With connecting branch（13）Joint between Connecting pipe（5）It is equipped with a hydrazine hydrate basin（15）, described hydrazine hydrate buffering tank valve（14）With hydrazine hydrate basin valve Door（15）Controlled by the DCS.
- 3. the system of continuous automatic dilution hydrazine hydrate according to claim 1 or 2, it is characterised in that：The hydrazine hydrate delays Rush tank（1）With feeding engine（6）Between connecting pipe（5）It is equipped with a hydrazine hydrate outlet valve（16）, the diluent tank （4）With No. two flow control valves（10）Between connecting pipe（5）On in close to diluent tank（4）One end be equipped with one dilution Agent outlet valve（17）, the hydrazine hydrate outlet valve（16）With diluent outlet valve（17）Described is controlled by DCS System.
- 4. the system of continuous automatic dilution hydrazine hydrate according to claim 1, it is characterised in that：One, No. two stream Gauge（9,11）With one, No. two flow control valve（8,10）It is high precision flow and high-precision flow control valve.
- 5. the system of continuous automatic dilution hydrazine hydrate according to claim 1, it is characterised in that：The diluent tank（4） Interior diluent is pure water diluent.
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| CN201711268540.8A CN107970860A (en) | 2017-12-05 | 2017-12-05 | A kind of system of continuous automatic dilution hydrazine hydrate |
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