CN103204476A - Concentration-rectification optimized production system for concentrating 27.5% hydrogen peroxide dilute solution into 50% hydrogen peroxide thick solution and method thereof - Google Patents
Concentration-rectification optimized production system for concentrating 27.5% hydrogen peroxide dilute solution into 50% hydrogen peroxide thick solution and method thereof Download PDFInfo
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Abstract
The invention discloses a concentration-rectification optimized production system for concentrating 27.5% hydrogen peroxide dilute solution into 50% hydrogen peroxide thick solution and a method thereof. The concentration-rectification optimized production system comprises jars of 27.5% hydrogen peroxide dilute solution pumped with a hydrogen peroxide dilute concentrating stabilizer, 50% hydrogen peroxide product pumped with a hydrogen peroxide stabilizer and chemical-grade product pumped with the hydrogen peroxide stabilizer, wherein outputs of the jars are all conveyed to the pipeline of an evaporator for application according to the invention; gas out of the top of a rectifying tower is mixed with gas pumped out of the shell of the evaporator and then the mixed gas passes through a tail gas condenser; after being cooled, the mixed gas enters a vacuum pump package via a gas-liquid mixed separation tank; and a desalted water acidity adjusting device and a pH meter online monitoring device are additionally arranged in the process of conveying desalted water to a reflux liquid tank from a desalted water station; therefore, controllable production safety of the system is guaranteed. According to the invention, the requirement of the system for the water quality of the desalted water in the production process and in emergency is met; and the system has the advantages of high product yield, low device investment, stable guarantee of product quality, low energy consumption and low product storage risk.
Description
Technical field
Patent of the present invention relates to Coal Chemical Industry, field of fine chemical, relates in particular to concentrated rectifying optimization production system and method thereof that the rare product solution concentration of a kind of 27.5% hydrogen peroxide is the dense product solution of 50% hydrogen peroxide.
Background technology
Along with developing rapidly of Chinese national economy, and the megatrend of " production globalization, grouping of the world economy, centralization, the green productive process " of world today's industrial development, hydrogen peroxide is as extremely user's the favor of outstanding person of green productive process, and development rapidly, and is sought-after.As the hydrogen peroxide of basic chemical industry raw material, domestic market demand is growing simultaneously, and export volume is cumulative year after year also.Textiles, chemosynthesis, paper pulp and papermaking are hydrogen peroxide three great tradition consumer fields, China is as being world textile production and big export country, occupy critical role in the world market, since " entry to WTO ", textile industry is powerful to the hydrogen peroxide demand growth impetus.Because China is different with developed country environmental regulation degree of perfection especially implementation capacity, the sold inside the country product of textiles and products for export environmental requirement gap are bigger, at present sold inside the country product is progressively by the chlorine bleaching hydrogen peroxide bleaching of migrating, and products for export has all been finished alternative Process.Along with the enhancing of people's environmental consciousness, hydrogen peroxide is extensively cognitive by people as a kind of eco-friendly hot product, and industrial competition also progressively strengthens.The outburst of domestic SARS epidemic situation in 2003 becomes the catalyzer that the hydrogen peroxide production capacity expands rapidly, 2005, China's hydrogen peroxide production capacity is (pure by 32.3 ten thousand t/a in 2000, down together) surge is to 83.5 ten thousand t/a, output is increased sharply to 68.0 ten thousand t by 21.5 ten thousand t, at present, domestic hydrogen peroxide unit throughput has reached more than 6,000,000 tons; China has become the first production of global hydrogen peroxide, country of consumption at present.For improving environment, rising the upsurge of one Green Chemistry synthesis technique research and development both at home and abroad, in the hydrogen peroxide derived product, developed country has reached over one hundred kind, and only there are tens kinds in China, gap is bigger.Present China hydrogen peroxide prepares hexanolactam and dihydroxy-benzene technology has realized industrialization, for dwindling the gap with the Western imperialist powers, at present, state's hydrogen peroxide industry is being accelerated the product restructuring paces, research and development concentrates and purification techniques, improve constantly quality product, increase high value added product proportions of production such as high density, high purity, electronic-grade, food grade, progressively capture middle and high-end market.Continually develop and the hydrogen peroxide derivative of production plurality of specifications, extend and improve product chain, with product " do essence, do dark, do specially, run business into strong one ", these will bring wide opportunity to develop to the hydrogen peroxide industry of China.
Hydrogen peroxide is heated and easily decomposes, belong to heat-sensitive substance, at present domestic concentrated rectificating method to the rare product solution of hydrogen peroxide mainly contains two classes: a class is that the vacuum of Liming chemical Inst's exploitation rises one step of embrane method (or two steps) evaporation and rectification process: another kind of be nineteen ninety-five bigization of Cangzhou evaporate and a rectification process later domestic Soviet Union's formula process unit of introducing a few cover different scales successively from the vacuum drop embrane method of Suhl longevity (being called for short Soviet Union's formula) introduction.The concentrated rectifier unit of the rare product solution of this two classes hydrogen peroxide is similar substantially on technological principle and operational path, all be in vacuum and low temperature evaporation rectifying based on the rare product solution of hydrogen peroxide, the pan feeding technical process is too loaded down with trivial details, make power consumption increase in the investment of device disposable apparatus and the production process, and raw material enter the hydrogen peroxide of adding before the vaporizer stabilizing agent specially used can't be continuously, quantitatively, the stable interpolation, the bad control of quality product, product yield is low; Hydrogen peroxide concentrates in the rectification process that the de-salted water effect mainly contains three aspects in the backflow flow container: one, rectifying tower trim the top of column liquid in addition, fully contact with hydrogen peroxide at the bottom of the rectifying Tata and hydrogen peroxide steam and to carry out hydrogen peroxide in the mass-and heat-transfer condensation hydrogen peroxide steam, two, regulating control rectifying tower column bottom temperature is 50～65 ℃, three, when system is in a state of emergency, use for rectifier bottoms, vaporizer top and bottom feed liquid dilution cooling, thereby suppress hydrogen peroxide decomposition speed, guarantee security of system.As seen de-salted water and water quality characteristic thereof are extremely important in system produces, and technical requirement enters that de-salted water is slightly acidic in the backflow flow container, and pH value is controlled 5～7; But in the rare product solution concentration of traditional hydrogen peroxide rectifying two class explained hereafter, all less than design continuously, automatization, be fit to acid facility and the pH value on-line monitoring system regulated of de-salted water that use in the scale operation; But in the acid control method employing of de-salted water two desalination tanks are set, two artificial switchings mutually of desalination tank, add the phosphoric acid solution resampling on time and analyze acidity, for use, do not reach continuously, the requirement of stable, automatization, device scale operation, not only increase energy consumption, manpower and cost of investment, and acidity is wayward, security incident very easily takes place, and the influence safety in production brings certain difficulty for operation and safety in production.
The rare product solution concentration of traditional hydrogen peroxide rectification process by the rectifying tower cat head come out gas and be mixed by the gas that the vaporizer shell is extracted out after, after tail gas condenser cooling gas-liquid separation, enter the vacuum pump group, enter atmosphere by the withdrawing gas of vacuum pump group; Vacuum tightness is subjected to factor affecting such as vacuum pump type selecting, system process, circulating water temperature, hydrogen peroxide quality product, production load bigger.The fluctuation of vacuum tightness can cause produces instability, bring certain difficulty for operation and safety in production, can cause the product concentration produced and off quality simultaneously, enter in the finished product jar production process at the rare product solution concentration of the traditional hydrogen peroxide of Soviet Union's formula rectification process product, according to the existing processes trend be, the technical grade product through with the heat exchange of the rare product solution of hydrogen peroxide after directly enter the finished product jar, the chemical grade product is directly delivered to the finished product jar by pump, and vaporizer, the drop temperature of rectifying tower is up to 65 ℃, being higher than the requirement of hydrogen peroxide storage temperature far away is lower than 30 ℃ (the universal experience data shows, liquid hydrogen peroxide temperature raises 10 ℃, its decomposition rate increases by 2.2 ± 0.1 times), increased the insecurity that hydrogen peroxide is stored, security incident easily takes place, adopt for the adding of 50% stabilizer of hydrogen peroxide in the finished product tank field utilization of stablizer groove to be set and to be pumped in the finished product jar superoxol, agitate with air again to stir; Air, facility investment, power consumption and dangerous have been increased.
Summary of the invention
The purpose of patent of the present invention is in order to improve the deficiency of prior art, and it is concentrated rectifying optimization production system and the method thereof of the dense product solution of 50% hydrogen peroxide that the rare product solution concentration of a kind of 27.5% hydrogen peroxide is provided.
The present invention is achieved through the following technical solutions:
The rare product solution concentration of a kind of 27.5% hydrogen peroxide is the concentrated rectifying optimization production system of the dense product solution of 50% hydrogen peroxide, it is characterized in that: include the rare product solution of 27.5% hydrogen peroxide basin, the rare product solution of 27.5% hydrogen peroxide basin discharge end inserts the hydrogen peroxide interchanger, hydrogen peroxide interchanger discharge end inserts vaporizer, the concentrated concentrate stablizer of the rare product of hydrogen peroxide is injected into the rare product solution of 27.5% hydrogen peroxide by electromagnetic dosing pump and is delivered to invention application in the vaporizer pipeline, vaporizer liquid phase discharge end inserts the hydrogen peroxide recycle pump, technical grade product after the discharging of a hydrogen peroxide recycle pump discharge end part concentrates as the rare product of 27.5% hydrogen peroxide, technical grade product discharge end inserts hydrogen peroxide interchanger and the heat exchange of the rare product solution of 27.5% hydrogen peroxide, the technical grade product is discharge end access technology level reactor product cooler after hydrogen peroxide interchanger and the heat exchange of the rare product solution of 27.5% hydrogen peroxide, technical grade reactor product cooler discharge end inserts 50% hydrogen peroxide product storage tank, and stabilizer of hydrogen peroxide is injected into 50% hydrogen peroxide product by electromagnetic dosing pump and is delivered to invention application in the 50% hydrogen peroxide product jar pipeline; The liquid phase discharge end inserts the chemical grade water cooler at the bottom of the rectifying Tata, chemical grade water cooler discharge end inserts chemical grade product jar, chemical grade product jar discharge end inserts 50% hydrogen peroxide product jar, and stabilizer of hydrogen peroxide is injected into invention application in chemical grade product jar discharging to the 50% hydrogen peroxide product jar pipeline by electromagnetic dosing pump; Come out gas and mixed by giving vent to anger into the gas-liquid mixed separating tank after the tail gas condenser cooling by the gas that the vaporizer shell is extracted out of rectifying tower top, gas fully mixes with spray water xi in the gas-liquid mixed separating tank and contacts, the gas of separating enters the vacuum pump group, and the withdrawing gas of vacuum pump group enters atmosphere; Cold shocking water adds the shower nozzle on gas-liquid mixed separating tank top by control valve; De-salted water is delivered to from the de-salted water station and is added de-salted water acidity adjustment device and PH meter on-Line Monitor Device in the backflow flow container process, guarantees that system's production safety is controlled.
The rare product solution concentration of described 27.5% hydrogen peroxide is the method for the concentrated rectifying of the dense product solution of 50% hydrogen peroxide, it is characterized in that: specifically include following steps:
⑴ the rare product solution of 27.5% hydrogen peroxide that, temperature are about 25 ℃ by the rare product solution of 27.5% hydrogen peroxide basin (1) with 17～21m
3The flow of/h is sent into the hydrogen peroxide interchanger, after the rare product solution of 27.5% hydrogen peroxide is heated to 30～40 ℃ in the hydrogen peroxide interchanger, enters vaporizer again;
⑵, the concentrated concentrate stablizer of the rare product of hydrogen peroxide utilize electromagnetic dosing pump (2) to be injected into the rare product solution of 27.5% hydrogen peroxide by stablizer groove (16) and are delivered in vaporizer (5) pipeline, by entering vaporizer (5) by pipeline and mixing tank 3 after rare product solution fully mixes;
⑶, vaporizer (5) liquid phase discharge end insert hydrogen peroxide recycle pump (24), utilize hydrogen peroxide recycle pump (24) to make 50 ℃～65 ℃ of high temperature superoxol temperature discharging to vaporizer (5) the top heating evaporation that circulates again, hydrogen peroxide recycle pump (24) discharge end is with flow 5～7.5m
3/ h extraction part concentration is as the technical grade product after the rare product solution concentration of 27.5% hydrogen peroxide more than 50% or 35%;
⑷, technical grade product discharge end insert hydrogen peroxide interchanger (23) and the heat exchange of the rare product solution of 27.5% hydrogen peroxide, technical grade product access technology level reactor product cooler (14) after the heat exchange, the back technical grade product that is cooled with 20～30 ℃ of dischargings of temperature to 50% hydrogen peroxide product storage tank (1);
⑸, stabilizer of hydrogen peroxide utilize electromagnetic measurement (4) to be injected into the technical grade product by stablizer groove (16) and are delivered in 50% hydrogen peroxide product jar (1) pipeline, by entering 50% hydrogen peroxide product jar (1) by pipeline and mixing tank (22) after the dense product solution of hydrogen peroxide fully mixes;
⑹ the liquid phase discharge end is with flow 3～6.5m at the bottom of, rectifying tower (6) tower
350～65 ℃ of/h extraction temperature, concentration are as the chemical grade product after the rare product solution concentration of 27.5% hydrogen peroxide more than 50% or 35%, the chemical grade product enters into chemical grade product jar (13), product utilization pump (25) discharging discharging to 50% hydrogen peroxide product jar (1) after temperature is down to 20～30 ℃ after chemical grade water cooler (15) cooling in the chemical grade product jar (13);
⑺, stabilizer of hydrogen peroxide utilize electromagnetic dosing pump (20) to be injected into the chemical grade product by stablizer groove (16) and are delivered in 50% hydrogen peroxide product jar (1) pipeline, by entering 50% hydrogen peroxide product jar (1) by pipeline and mixing tank (21) after the dense product solution of hydrogen peroxide fully mixes;
⑻, rectifying tower (6) cat head come out gas and be mixed by the gas that vaporizer (5) shell is extracted out after, cool off through tail gas condenser (8), gas-liquid mixed separation (9) middle and lower part is inserted in the outlet side after the gas-liquid separation, gas in gas-liquid mixed separating tank (9) by the bottom enter with from top to bottom the ejection the reverse abundant mixing of spray water xi contact, the gas that refrigerated separation is come out enters vacuum pump group (12) again, enters atmosphere by vacuum pump group (12) withdrawing gas; Cold shocking water adds gas-liquid mixed separating tank (9) top shower nozzle by control valve (26) and forms spray water xi;
⑼, de-salted water are delivered to backflow flow container (7) process development and are added de-salted water acidity adjustment device (10,18,19) from the de-salted water station;
⑽, de-salted water are delivered to backflow flow container (7) process development and are added PH meter (17) on-Line Monitor Device from the de-salted water station, guarantee that system's production safety is controlled.
Principle of the present invention is:
1, cancellation raw material charging stock tank, the raw material fresh feed pump, adopt the rare product solution of 27.5% hydrogen peroxide to utilize the direct discharging of transferpump to be the hydrogen peroxide interchanger by the rare product basin of hydrogen peroxide, enter vaporizer after the hydrogen peroxide heat exchange again, the rare product of hydrogen peroxide concentrate that concentrate is stabilizing agent specially used to be injected into the rare product solution of 27.5% hydrogen peroxide by electromagnetic dosing pump and to be delivered in the vaporizer pipeline, advance vaporizer together by mixing back two kinds of solution by pipeline and mixing tank, not only the technological process of production is simplified, the one-time investment of saving equipment, reduced power consumption, quality product is effectively guaranteed, and has improved product yield.
2, increased the technical grade product by the discharging of hydrogen peroxide recycle pump after hydrogen peroxide interchanger and the heat exchange of the rare product solution of 27.5% hydrogen peroxide, again after technical grade reactor product cooler cooling discharging to 50% hydrogen peroxide product storage tank, 50% stabilizer of hydrogen peroxide is injected into 50% hydrogen peroxide product by electromagnetic dosing pump and is delivered in the 50% hydrogen peroxide product jar pipeline, deliver to together in the 50% hydrogen peroxide product jar by mixing back two kinds of solution by pipeline and mixing tank, satisfied the requirement (being lower than 30 ℃) of peroxidation storage temperature, reduced the risk of decomposing in the 50% superoxol storage process, increase the security that 50% superoxol is stored, saved facility investment simultaneously, power consumption.
3, liquid phase (chemical grade product) discharge end inserts chemical grade product jar at the bottom of having set up the rectifying Tata, the recycling pump delivery inserts 50% hydrogen peroxide product jar to chemical grade water cooler discharge end after cooling off, 50% stabilizer of hydrogen peroxide is injected in chemical grade product jar discharging to the 50% hydrogen peroxide product jar pipeline by electromagnetic dosing pump, deliver to together in the 50% hydrogen peroxide product jar by mixing back two kinds of solution by pipeline and mixing tank, satisfied the requirement (being lower than 30 ℃) of peroxidation storage temperature, reduce the risk of decomposing in the 50% superoxol storage process, increased the security that 50% superoxol is stored.
4, increased come out gas and mixed by giving vent to anger into the gas-liquid mixed separating tank after the tail gas condenser cooling by the gas that the vaporizer shell is extracted out of rectifying tower top, gas fully mixes with spray water xi in the gas-liquid mixed separating tank and contacts, the gas of separating enters the vacuum pump group, and the withdrawing gas of vacuum pump group enters atmosphere; Cold shocking water adds the shower nozzle on gas-liquid mixed separating tank top by control valve; Utilize gas-liquid directly to mix contact, mixture temperature reduces greatly, greatly reduced by come out gas and entered into the amount of vacuum pump group by the mixed gas that the vaporizer shell is extracted out of rectifying tower top, make vacuum pump group operating load steady, the system vacuum degree is stablized Bao Chi Zai – 97KPa～– 95 Kpa scopes, reduced the rate of decomposition of Hydrogen Peroxide Dilute Solution in concentration process, product yield is up to 97%～99%, reduced the power consumption of system simultaneously, equipment can remain under certain steady state and move, prolong machine work-ing life, guaranteed security of system, the long-term operation of device.
5, increased de-salted water and delivered to backflow flow container process development from the de-salted water station and add de-salted water acidity adjustment device, de-salted water is delivered to backflow flow container process development and is added PH meter on-Line Monitor Device from the de-salted water station, guarantee that system's production safety is controlled.Guaranteed the production requirement of de-salted water pH value, realized monitor state constantly, satisfied system under production process and the emergency state to the de-salted water requirements in water quality, reach continuously, the technical requirements of stable, automatization, device scale operation, not only reduce energy consumption, manpower and cost of investment, more reduced the generation of security incident, optimized operation, reduce people's labour intensity, guaranteed system's long period safe operation.
Compare with conventional art, the advantage of patent of the present invention is:
Patent of the present invention has that raw produce yield height, plant investment are economized, quality product can obtain stablely guaranteeing, energy consumption is low, product is stored advantages such as risk is little, automatic continuous production, cancellation raw material charging stock tank, raw material fresh feed pump, the rare product solution of 27.5% hydrogen peroxide utilizes the direct discharging of transferpump to enter vaporizer by the rare product basin of hydrogen peroxide, simplifies the technological process of production, has saved cost of investment, has made things convenient for operation.The rare product of hydrogen peroxide concentrate that concentrate is stabilizing agent specially used to be injected into the rare product solution of 27.5% hydrogen peroxide by electromagnetic dosing pump and to be delivered in the vaporizer pipeline, advance vaporizer together by mixing back two kinds of solution by pipeline and mixing tank, quality product is effectively guaranteed, and has improved product yield.Technical grade, the discharging of chemical grade product increase water cooler respectively and stablizer adds electromagnetic pump, mixing tank to the product jar, both reduced product temperature, satisfy storage temperature less than 30 ℃ of requirements, reduced the risk of decomposing in the 50% superoxol storage process again, increase the security that 50% superoxol is stored, saved facility investment, power consumption simultaneously.Set up the gas-liquid mixed separating tank, utilize gas-liquid directly to mix contact, mixture temperature reduces greatly, greatly reduced the amount that gas enters into the vacuum pump group, make vacuum pump group operating load steady, the system vacuum degree is stablized Bao Chi Zai – 97KPa～– 95 Kpa scopes, reduced the rate of decomposition of Hydrogen Peroxide Dilute Solution in concentration process, reduced the power consumption of system simultaneously, product yield is up to 97%～99%, equipment can remain under certain steady state and move, prolonged machine work-ing life, has guaranteed the long-term operation of security of system, device.Having increased de-salted water delivers to backflow flow container process development and adds de-salted water acidity adjustment device from the de-salted water station, de-salted water is delivered to backflow flow container process development and is added PH meter on-Line Monitor Device from the de-salted water station, assurance system production safety is controlled, guaranteed the production requirement of de-salted water pH value, realized monitor state constantly, satisfied system under production process and the emergency state to the de-salted water requirements in water quality, reach continuous, stable, automatization, the technical requirements of device scale operation, not only reduced energy consumption, manpower and cost of investment, more reduce the generation of security incident, optimize operation, reduced people's labour intensity, guaranteed system's long period safe operation.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
Referring to accompanying drawing, the rare product solution concentration of a kind of 27.5% hydrogen peroxide is concentrated rectifying optimization production system's measure and the method for the dense product solution of 50% hydrogen peroxide, include the rare product solution of 27.5% hydrogen peroxide basin 1, the rare product solution of 27.5% hydrogen peroxide basin 1 discharge end inserted hydrogen peroxide interchanger 23, hydrogen peroxide interchanger 23 discharge ends insert vaporizer 5, the rare product of hydrogen peroxide concentrate that concentrate is stabilizing agent specially used to be injected into the rare product solution of 27.5% hydrogen peroxide by electromagnetic dosing pump 2 and to be delivered in the vaporizer pipeline invention and to use, vaporizer 5 liquid phase discharge ends insert hydrogen peroxide recycle pump 24, hydrogen peroxide recycle pump 24 discharge ends part dischargings (more than the concentration 50% or 35%) concentrate back technical grade product (more than the concentration 50% or 35%) as the rare product of 27.5% hydrogen peroxide, technical grade product discharge end inserts hydrogen peroxide interchanger 23 and the heat exchange of the rare product solution of 27.5% hydrogen peroxide, the technical grade product is discharge end access technology level reactor product cooler 14 after hydrogen peroxide interchanger and the heat exchange of the rare product solution of 27.5% hydrogen peroxide, technical grade reactor product cooler discharge end inserts 50% hydrogen peroxide product storage tank, 1,50% stabilizer of hydrogen peroxide and is injected into 50% hydrogen peroxide product by electromagnetic dosing pump 4 and is delivered in 50% hydrogen peroxide product jar, 1 pipeline invention and uses; The liquid phase discharge end inserts chemical grade product jar 13 at the bottom of rectifying tower 6 towers, chemical grade product jar 13 discharge ends insert chemical grade water cooler 15, chemical grade water cooler 15 discharge ends insert 50% hydrogen peroxide product jar, 1,50% stabilizer of hydrogen peroxide and are injected into invention application in chemical grade product jar 1 discharging to the 50% hydrogen peroxide product jar pipeline by electromagnetic dosing pump 20; Rectifying tower 6 ejects gas and is mixed by giving vent to anger into gas-liquid mixed separating tank 9 after tail gas condenser 8 coolings by the gas that vaporizer 5 shells are extracted out, gas fully mixes with spray water xi in gas-liquid mixed separating tank 9 and contacts, the gas of separating enters vacuum pump group 12, and 12 withdrawing gass of vacuum pump group enter atmosphere; Cold shocking water adds gas-liquid mixed separating tank 9 top shower nozzles by control valve 26; De-salted water is delivered to from the de-salted water station and is set up de-salted water acidity adjustment device (10,18,19) in backflow flow container 7 processes and PH counts 17 on-Line Monitor Device.
The rare product solution concentration of 27.5% hydrogen peroxide is concentrated rectifying optimization production system's measure and the method for the dense product solution of 50% hydrogen peroxide, specifically may further comprise the steps:
⑴ the rare product solution of 27.5% hydrogen peroxide that, temperature are about 25 ℃ by the rare product solution of 27.5% hydrogen peroxide basin 1 with 17～21m
3The flow of/h is sent into hydrogen peroxide interchanger 23, after the rare product solution of 27.5% hydrogen peroxide is heated to 30～40 ℃ in the hydrogen peroxide interchanger 23, enter vaporizer 5 again, cancellation raw material charging stock tank, raw material fresh feed pump, adopt the rare product solution of 27.5% hydrogen peroxide to utilize the direct discharging of transferpump to be the hydrogen peroxide interchanger by the rare product basin of hydrogen peroxide, enter vaporizer after the hydrogen peroxide heat exchange again, not only the technological process of production is simplified, and the one-time investment of the equipment of saving, has reduced power consumption.
⑵, stabilizer of hydrogen peroxide utilize electromagnetic dosing pump 2 to be injected into the rare product solution of 27.5% hydrogen peroxide by stablizer groove 16 and are delivered in vaporizer 5 pipelines, by after rare product solution fully mixes, entering vaporizer 5 by pipeline and mixing tank 3, quality product is effectively guaranteed, improve product yield, reduced power consumption simultaneously.
⑶, vaporizer 5 liquid phase discharge ends insert hydrogen peroxide recycle pump 24, utilize hydrogen peroxide recycle pump 24 to make 50 ℃～65 ℃ of high temperature superoxol temperature discharging to the vaporizer 5 tops heating evaporation that circulates again, hydrogen peroxide recycle pump 24 discharge ends are with flow 5～7.5m
3/ h extraction part concentration is 50%(or 35%) above as the technical grade product after the rare product solution concentration of 27.5% hydrogen peroxide, technical grade product discharge end inserts hydrogen peroxide interchanger 23 and the heat exchange of the rare product solution of 27.5% hydrogen peroxide, technical grade product access technology level reactor product cooler 14 after the heat exchange, be cooled back technical grade product with 20～30 ℃ of dischargings of temperature to 50% hydrogen peroxide product storage tank 1, by increasing the technical grade reactor product cooler, having developed 50% stabilizer of hydrogen peroxide is injected into 50% hydrogen peroxide product by electromagnetic dosing pump and is delivered in the 50% hydrogen peroxide product jar pipeline, deliver to together in the 50% hydrogen peroxide product jar by mixing back two kinds of solution by pipeline and mixing tank, not only satisfied the requirement (being lower than 30 ℃) of hydrogen peroxide storage temperature, reduced the risk of decomposing in the 50% superoxol storage process, increase the security that 50% superoxol is stored, saved facility investment simultaneously, power consumption.
⑷ the liquid phase discharge end is with flow 3～6.5m at the bottom of, rectifying tower 6 towers
350～65 ℃ of/h extraction temperature, concentration is 50%(or 35%) above as the chemical grade product after the rare product solution concentration of 27.5% hydrogen peroxide, the chemical grade product enters into chemical grade product jar 13, product utilization pump 25 dischargings discharging to 50% hydrogen peroxide product jar 1 after temperature is down to 20～30 ℃ after 15 coolings of chemical grade water cooler in the chemical grade product jar 13,50% stabilizer of hydrogen peroxide utilizes electromagnetic dosing pump 20 to be injected into the chemical grade product by stablizer groove 16 and is delivered in 50% hydrogen peroxide product jar, 1 pipeline, by after the dense product solution of hydrogen peroxide fully mixes, entering 50% hydrogen peroxide product jar 1 by pipeline and mixing tank 21, satisfied the requirement (being lower than 30 ℃) of peroxidation storage temperature, reduce the risk of decomposing in the 50% superoxol storage process, increased the security that 50% superoxol is stored.
⑸, rectifying tower 6 cats head come out gas and be mixed by the gas that vaporizer 5 shells are extracted out after, through tail gas condenser 8 coolings, outlet side access gas-liquid mixed is separated 9 middle and lower parts after the gas-liquid separation, gas in gas-liquid mixed separating tank 9 by the bottom enter with from top to bottom the ejection the reverse abundant mixing of spray water xi contact, the gas that refrigerated separation is come out enters vacuum pump group 12 again, enters atmosphere by 12 withdrawing gass of vacuum pump group; Cold shocking water adds gas-liquid mixed separating tank 9 top shower nozzles by control valve 26 and forms spray water xi.Gas-liquid mixed separating tank 9 and cold shocking water have been increased by control valve 26, make come out gas and mixed by giving vent to anger into the gas-liquid mixed separating tank after the tail gas condenser cooling by the gas that the vaporizer shell is extracted out of rectifying tower top, gas fully mixes with spray water xi in the gas-liquid mixed separating tank and contacts, the gas of separating enters the vacuum pump group, and the withdrawing gas of vacuum pump group enters atmosphere; Cold shocking water adds the shower nozzle on gas-liquid mixed separating tank top by control valve; Utilize gas-liquid directly to mix contact, mixture temperature reduces greatly, greatly reduced by come out gas and entered into the amount of vacuum pump group by the mixed gas that the vaporizer shell is extracted out of rectifying tower top, make vacuum pump group operating load steady, the system vacuum degree is stablized Bao Chi Zai – 97KPa～– 95 Kpa scopes, reduced the rate of decomposition of Hydrogen Peroxide Dilute Solution in concentration process, product yield is up to 97%～99%, reduced the power consumption of system simultaneously, equipment can remain under certain steady state and move, prolong machine work-ing life, guaranteed security of system, the long-term operation of device.
⑹, de-salted water are delivered to backflow flow container 7 process developments and are added de-salted water acidity adjustment device (10,18,19) from the de-salted water station, de-salted water is delivered to backflow flow container 7 process developments and is added PH and count 17 on-Line Monitor Device from the de-salted water station, assurance system production safety is controlled, deliver to backflow flow container process development from the de-salted water station and add de-salted water acidity adjustment device (10,18,19) by increasing de-salted water, de-salted water is delivered to backflow flow container process development and is added PH and count 17 on-Line Monitor Device from the de-salted water station.Not only guaranteed the production requirement of de-salted water pH value, guarantee that more system's production safety is controlled, realized monitor state constantly, satisfied system under production process and the emergency state to the de-salted water requirements in water quality, reach continuously, the technical requirements of stable, automatization, device scale operation, not only reduced energy consumption, manpower and cost of investment, more reduce the generation of security incident, optimize operation, reduced people's labour intensity, guaranteed system's long period safe operation.
Claims (2)
1. the rare product solution concentration of hydrogen peroxide is the concentrated rectifying optimization production system of the dense product solution of 50% hydrogen peroxide, it is characterized in that: include the rare product solution of 27.5% hydrogen peroxide basin, the rare product solution of 27.5% hydrogen peroxide basin discharge end inserts the hydrogen peroxide interchanger, hydrogen peroxide interchanger discharge end inserts vaporizer, the concentrated concentrate stablizer of the rare product of hydrogen peroxide is injected into the rare product solution of 27.5% hydrogen peroxide by electromagnetic dosing pump and is delivered to invention application in the vaporizer pipeline, vaporizer liquid phase discharge end inserts the hydrogen peroxide recycle pump, technical grade product after the discharging of a hydrogen peroxide recycle pump discharge end part concentrates as the rare product of 27.5% hydrogen peroxide, technical grade product discharge end inserts hydrogen peroxide interchanger and the heat exchange of the rare product solution of 27.5% hydrogen peroxide, the technical grade product is discharge end access technology level reactor product cooler after hydrogen peroxide interchanger and the heat exchange of the rare product solution of 27.5% hydrogen peroxide, technical grade reactor product cooler discharge end inserts 50% hydrogen peroxide product storage tank, and stabilizer of hydrogen peroxide is injected into 50% hydrogen peroxide product by electromagnetic dosing pump and is delivered to invention application in the 50% hydrogen peroxide product jar pipeline; The liquid phase discharge end inserts the chemical grade water cooler at the bottom of the rectifying Tata, chemical grade water cooler discharge end inserts chemical grade product jar, chemical grade product jar discharge end inserts 50% hydrogen peroxide product jar, and stabilizer of hydrogen peroxide is injected into invention application in chemical grade product jar discharging to the 50% hydrogen peroxide product jar pipeline by electromagnetic dosing pump; Come out gas and mixed by giving vent to anger into the gas-liquid mixed separating tank after the tail gas condenser cooling by the gas that the vaporizer shell is extracted out of rectifying tower top, gas fully mixes with spray water xi in the gas-liquid mixed separating tank and contacts, the gas of separating enters the vacuum pump group, and the withdrawing gas of vacuum pump group enters atmosphere; Cold shocking water adds the shower nozzle on gas-liquid mixed separating tank top by control valve; De-salted water is delivered to from the de-salted water station and is added de-salted water acidity adjustment device and PH meter on-Line Monitor Device in the backflow flow container process, guarantees that system's production safety is controlled.
2. be the method for the concentrated rectifying of the dense product solution of 50% hydrogen peroxide based on the rare product solution concentration of described 27.5% hydrogen peroxide of claim 1, it is characterized in that: specifically include following steps:
⑴ the rare product solution of 27.5% hydrogen peroxide that, temperature are about 25 ℃ by the rare product solution of 27.5% hydrogen peroxide basin (1) with 17～21m
3The flow of/h is sent into the hydrogen peroxide interchanger, after the rare product solution of 27.5% hydrogen peroxide is heated to 30～40 ℃ in the hydrogen peroxide interchanger, enters vaporizer again;
⑵, the concentrated concentrate stablizer of the rare product of hydrogen peroxide utilize electromagnetic dosing pump (2) to be injected into the rare product solution of 27.5% hydrogen peroxide by stablizer groove (16) and are delivered in vaporizer (5) pipeline, by entering vaporizer (5) by pipeline and mixing tank 3 after rare product solution fully mixes;
⑶, vaporizer (5) liquid phase discharge end insert hydrogen peroxide recycle pump (24), utilize hydrogen peroxide recycle pump (24) to make 50 ℃～65 ℃ of high temperature superoxol temperature discharging to vaporizer (5) the top heating evaporation that circulates again, hydrogen peroxide recycle pump (24) discharge end is with flow 5～7.5m
3/ h extraction part concentration is as the technical grade product after the rare product solution concentration of 27.5% hydrogen peroxide more than 50% or 35%;
⑷, technical grade product discharge end insert hydrogen peroxide interchanger (23) and the heat exchange of the rare product solution of 27.5% hydrogen peroxide, technical grade product access technology level reactor product cooler (14) after the heat exchange, the back technical grade product that is cooled with 20～30 ℃ of dischargings of temperature to 50% hydrogen peroxide product storage tank (1);
⑸, stabilizer of hydrogen peroxide utilize electromagnetic measurement (4) to be injected into the technical grade product by stablizer groove (16) and are delivered in 50% hydrogen peroxide product jar (1) pipeline, by entering 50% hydrogen peroxide product jar (1) by pipeline and mixing tank (22) after the dense product solution of hydrogen peroxide fully mixes;
⑹ the liquid phase discharge end is with flow 3～6.5m at the bottom of, rectifying tower (6) tower
350～65 ℃ of/h extraction temperature, concentration are as the chemical grade product after the rare product solution concentration of 27.5% hydrogen peroxide more than 50% or 35%, the chemical grade product enters into chemical grade product jar (13), product utilization pump (25) discharging discharging to 50% hydrogen peroxide product jar (1) after temperature is down to 20～30 ℃ after chemical grade water cooler (15) cooling in the chemical grade product jar (13);
⑺, stabilizer of hydrogen peroxide utilize electromagnetic dosing pump (20) to be injected into the chemical grade product by stablizer groove (16) and are delivered in 50% hydrogen peroxide product jar (1) pipeline, by entering 50% hydrogen peroxide product jar (1) by pipeline and mixing tank (21) after the dense product solution of hydrogen peroxide fully mixes;
⑻, rectifying tower (6) cat head come out gas and be mixed by the gas that vaporizer (5) shell is extracted out after, cool off through tail gas condenser (8), gas-liquid mixed separation (9) middle and lower part is inserted in the outlet side after the gas-liquid separation, gas in gas-liquid mixed separating tank (9) by the bottom enter with from top to bottom the ejection the reverse abundant mixing of spray water xi contact, the gas that refrigerated separation is come out enters vacuum pump group (12) again, enters atmosphere by vacuum pump group (12) withdrawing gas; Cold shocking water adds gas-liquid mixed separating tank (9) top shower nozzle by control valve (26) and forms spray water xi;
⑼, de-salted water are delivered to backflow flow container (7) process development and are added de-salted water acidity adjustment device (10,18,19) from the de-salted water station;
⑽, de-salted water are delivered to backflow flow container (7) process development and are added PH meter (17) on-Line Monitor Device from the de-salted water station, guarantee that system's production safety is controlled.
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| CN2013101197135A CN103204476A (en) | 2013-04-08 | 2013-04-08 | Concentration-rectification optimized production system for concentrating 27.5% hydrogen peroxide dilute solution into 50% hydrogen peroxide thick solution and method thereof |
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| CN2013101197135A CN103204476A (en) | 2013-04-08 | 2013-04-08 | Concentration-rectification optimized production system for concentrating 27.5% hydrogen peroxide dilute solution into 50% hydrogen peroxide thick solution and method thereof |
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Cited By (4)
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| CN103523756A (en) * | 2013-10-23 | 2014-01-22 | 天津大沽化工股份有限公司 | Production method and device of high-concentration hydrogen peroxide |
| CN108203079A (en) * | 2016-12-16 | 2018-06-26 | 中国石油化工股份有限公司 | A kind of hydrogen peroxide concentration unit |
| CN109589624A (en) * | 2019-01-31 | 2019-04-09 | 滨化集团股份有限公司 | A kind of concentration integrated evaporator of hydrogen peroxide |
| CN111099562A (en) * | 2019-12-25 | 2020-05-05 | 山东新龙集团有限公司 | Hydrogen peroxide rectification process |
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| CN102161475A (en) * | 2009-11-02 | 2011-08-24 | 郑国玉 | Concentration method in production of hydrogen peroxide by anthraquinone method |
| TW201223857A (en) * | 2010-08-25 | 2012-06-16 | Evonik Degussa Gmbh | Process for concentrating aqueous hydrogen peroxide solution |
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| CN102086028A (en) * | 2009-12-07 | 2011-06-08 | 郑国玉 | Concentration method for producing highly-concentrated chemical-grade hydrogen peroxide solution |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103523756A (en) * | 2013-10-23 | 2014-01-22 | 天津大沽化工股份有限公司 | Production method and device of high-concentration hydrogen peroxide |
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| CN108203079A (en) * | 2016-12-16 | 2018-06-26 | 中国石油化工股份有限公司 | A kind of hydrogen peroxide concentration unit |
| CN108203079B (en) * | 2016-12-16 | 2021-06-01 | 中国石油化工股份有限公司 | Hydrogen peroxide concentration device |
| CN109589624A (en) * | 2019-01-31 | 2019-04-09 | 滨化集团股份有限公司 | A kind of concentration integrated evaporator of hydrogen peroxide |
| CN111099562A (en) * | 2019-12-25 | 2020-05-05 | 山东新龙集团有限公司 | Hydrogen peroxide rectification process |
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