CN206219295U - A kind of Texaco gasifier buck high efficient resourcing recycling system - Google Patents

Abstract

A kind of Texaco gasifier buck high efficient resourcing recycling system, including Heisui River subsider, the Heisui River sedimentation trench bottom connects filter to material pond by subsider lower valve, filter connects thick slag filter to the outlet of material pond by the first filter feed pump, and the top delivery port of Heisui River subsider connects Ca by valve on subsider²⁺、Mg²⁺The bottom water inlet of sedimentation basin, Ca²⁺、Mg²⁺The top discharge outlet of sedimentation basin connects the first draining pump, and the delivery port connection ash water tank of the first draining pump, the top discharge outlet of ash water tank connects MAP reaction settling basins by the second draining pump, and MAP reaction settling basins connect Rinsing Area by the 3rd draining pump；The utility model can rapidly and efficiently remove buck NH₄ ⁺N and Ca²⁺、Mg²⁺Ion, drastically increases the water quality that ash water recycling makees gasification furnace chilled water, equipment overhaul cycle is extended about more than 6 months, and the precipitation recoverable for producing, and reduces subsequent biochemical processing cost, realizes the theory of recycling industries and clean production.

Description

A kind of Texaco gasifier buck high efficient resourcing recycling system

Technical field

The utility model is related to industrial waste water treatment, especially a kind of Texaco gasifier buck efficient resource Change recycling system.

Background technology

Increasingly in short supply due to global range petroleum resources, China's Coal Chemical Industry turns into the strategy weight of economic development in recent years Point, particularly producing clear energy sources（Such as hydrogen, methane, methyl alcohol）Or substitute petrochemicals（Such as ethylene raw, poly- third Alkene raw material, dimethyl ether etc.）Based on New Coal Chemical the industry development impetus it is powerful.Wherein Texaco（GE）Coal water slurry gasification skill Art is one of more successful Coal Gasification Technology of current domestic and international application, has had the applicating history of more than 30 years, 2013 in China The oil plant such as Maoming, Zibo, Jiujiang, Nanjing, Anqing has built a series of extensive coal energy source devices after year.But coal gas chemical industry All there is the environmental issue that water consumption is big, wastewater discharge is big in skill, and waste water quality is determined by coal raw material and different gasification process It is fixed, such as lignite, bituminous coal, anthracite, coke and different coal gasifying process：Fixed bed（Lurgi gasifier）, fluid bed（Winkler stove） And air flow bed（Texaco stove）Deng waste water quality has very big difference.

The nucleus equipment of Texaco Water-coal Slurry Pressured Gasification Process is GE gasification furnaces, and it includes combustion chamber and two, shock chamber Point, top is combustion chamber, and bottom is shock chamber, inside there is the critical pieces such as chilling ring, down-comer, tedge and hydraulic barrier.Close Into gas and a small amount of slag under the guiding of down-comer, go out gasification furnace and enter under gasification furnace shock chamber liquid level, make in chilled water Drastically lower the temperature under, discharged through lock hopper after the cooled solidification of slag, synthesis gas then enters the further cleaning dust of scrubbing tower.From gas Change stove, wash tower bottoms and be expelled directly out temperature, pressure process water higher, black, solid content 10-15% and dissolved with H₂S、 CO₂、NH₃It is referred to as Heisui River Deng gas；Heisui River enters subsider after multistage flash evaporation, is grey by the water outlet after clarifying treatment of flocculating Water, its solid content is further reduced, H₂S、CO₂、NH₃Reduced Deng gas content.In order to reduce technique water consumption, there are nearly four points Three buck be back to use in gasification furnace again as chilled water, the buck of remainder enters sewage disposal system.But due to ash Except dissolubility high concentration NH in water₄ ⁺- N, also contains Ca²⁺1200-1400mg/L、Mg²⁺100-200mg/L, the two is far above mixed Saturated aqueous solution hardness 323.1mg/L is closed (with CaCO₃Meter), so cause Quench water pipeline and waterline fouling serious, often Platform gasifier operation 30-50 days, inner-walls of duct fouling thickness about 2-5cm.In production process major coal chemical industry enterprises occurred by It is forced the experience of all fronts parking maintenance in pipeline serious scale.In addition, after buck enters sewage disposal system, high concentration NH₄ ⁺- N causes carbon-nitrogen ratio low, and is unfavorable for that subsequent biochemical is processed.Therefore there is biochemical system fluctuation of service in actual process, Sludge easily expands, and total nitrogen concentration is exceeded, be difficult to remove, for drop total nitrogen causes that reflux ratio is high, high energy consumption phenomenon.

Utility model content

The utility model aims to provide one kind and can rapidly and efficiently remove buck NH₄ ⁺- N and Ca²⁺、Mg²⁺Ion, greatly The water quality that ash water recycling makees gasification furnace chilled water is improve, equipment overhaul cycle is extended about more than 6 months, and the precipitation for producing Can be recycled respectively as the construction material of high-quality and agricultural slow-release fertilizer, reduce subsequent biochemical processing cost, realize circulation warp The Texaco gasifier buck high efficient resourcing recycling system of the theory of Ji and clean manufacturing.

To achieve the above object, the utility model provides following technical scheme：A kind of Texaco gasifier buck is efficiently provided Source recycling system, including Heisui River subsider, Ca²⁺、Mg²⁺Sedimentation basin, ash water tank, MAP reaction settling basins, Rinsing Area and To material pond, the Heisui River sedimentation trench bottom connects filter to material pond to filter by subsider lower valve, and filter is to material pond Outlet thick slag filter is connected by the first filter feed pump, the top delivery port of Heisui River subsider passes through subsider upper valve Door connection Ca²⁺、Mg²⁺The bottom water inlet of sedimentation basin, Ca²⁺、Mg²⁺The top discharge outlet of sedimentation basin connects the first draining pump, first The delivery port connection ash water tank of draining pump, the top discharge outlet of ash water tank connects MAP reaction settling basins by the second draining pump, MAP reaction settling basins connect Rinsing Area, the downflow weir outlet connection chilled water intake pump of Rinsing Area by the 3rd draining pump；Ca²⁺、 Mg²⁺The bottom of sedimentation basin connects the first precipitation collecting pit by precipitating discharge line, and the first precipitation collecting pit is by the second filtering Machine feed pump connection first precipitates filter；The bottom of MAP reaction settling basins connects the second precipitation receipts by precipitating discharge line Ji Chi, the second precipitation collecting pit connects MAP recovery device by feed pump.

As further scheme of the present utility model：The Ca²⁺、Mg²⁺Set respectively in sedimentation basin and MAP reaction settling basins There are an agitator and No. two agitators.

As further scheme of the present utility model：The Ca²⁺、Mg²⁺Sedimentation basin bottom precipitation discharge line sets first Mud valve, MAP reaction settling basins bottom discharge line sets the second mud valve.

As further scheme of the present utility model：The Ca²⁺、Mg²⁺Sedimentation basin top is set plus NaOH is managed and added Na₂CO₃Pipe.

As further scheme of the present utility model：MAP reaction settling basins top setting adds magnesium salts pipe, phosphorate salt Manage, add NaOH pipes and the first pH value detector.

Compared with prior art, the beneficial effects of the utility model are：The Texaco gasifier buck high efficient resourcing is returned Receipts have advantages below using system：First, NH in Texaco gasifier coal gas technique buck₄ ⁺- N concentration is 280-400mg/L, COD is 800-1200mg/L, and its hardness usually between 1200-1460mg/L, is exceeded well over mixed full both at 25 DEG C With the hardness 323.1mg/L of the aqueous solution (with CaCO₃Meter), therefore feed-line fouling is serious in production, it is very big to Influence of production. This patent is first to Ca²⁺After ion carries out precipitation process, further acted synergistically by MAP sedimentations, reduced the hardness to Below 60-150mg/L, controls in less scaling safe range, NH₄ ⁺More than-N clearances 60-90%, drastically increases ash Water solves the easy scale problems of Quench water treatment system as the water quality of gasification furnace chilled water, equipment overhaul cycle is extended about 6 More than individual month.

2nd, because prevailing system buck carbon-nitrogen ratio is low, cause that biochemical system NH_3-N treating is difficult up to standard and total nitrogen is exceeded Phenomenon is serious.With the difference of dosage in this patent, buck NH₄ ⁺- N clearances are up to 60-90%, therefore significantly reduce follow-up The NH of biochemical treatment system₄ ⁺- N loads, make total nitrogen emission reduction improve more than 70-90%, greatly improve biochemical effects, it is ensured that NH₄ ⁺-N、 TN qualified discharges and system stable operation, while being significantly reduced cost for wastewater treatment.

3rd, this patent is to Ca²⁺、Mg²⁺Ion and NH₄ ⁺- N carries out precipitation removal respectively, and the precipitation of generation is with CaCO₃And phosphorus Based on sour ammonium magnesium, its CaO content is higher than 52%, MgNH₄PO₄·6H₂O content be higher than 95%, obtained high-quality construction material and The industrial chemicals of high-quality or agricultural slow-release fertilizer are reclaimed, therefore realize the theory of recycling industries and clean production.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of the utility model protection.

Fig. 1 is referred to, in the utility model embodiment, a kind of Texaco gasifier buck high efficient resourcing recycles system System, including Heisui River subsider 1, Ca²⁺、Mg²⁺Sedimentation basin 2, ash water tank 3, MAP reaction settling basins 4, Rinsing Area 5 and filter feed Pond 7, the bottom of Heisui River subsider 1 connects filter to material pond 7, outlet of the filter to material pond 7 by subsider lower valve 6 Thick slag filter 9 is connected by the first filter feed pump 8, the top delivery port of Heisui River subsider 1 is by valve on subsider 10 connection Ca²⁺、Mg²⁺The bottom water inlet of sedimentation basin 2, Ca²⁺、Mg²⁺The top discharge outlet of sedimentation basin 2 connects the first draining pump 18, The delivery port connection ash water tank 3 of the first draining pump 18, the top discharge outlet of ash water tank 3 connects MAP by the second draining pump 19 Reaction settling basin 4, MAP reaction settling basins 4 connect Rinsing Area 5, the downflow weir outlet connection of Rinsing Area 5 by the 3rd draining pump 29 Chilled water intake pump 32；Ca²⁺、Mg²⁺The bottom of sedimentation basin 2 connects the first precipitation collecting pit 15, first by precipitating discharge line Precipitation collecting pit 15 connects first and precipitates filter 17 by the second filter feed pump 16；The bottom of MAP reaction settling basins 4 leads to Cross precipitation discharge line connection second and precipitate collecting pit 26, the second precipitation collecting pit 26 connects MAP and reclaims dress by feed pump 27 Put 28.

It is above-mentioned, Ca²⁺、Mg²⁺An agitator 11 and No. two stirrings are respectively equipped with sedimentation basin 2 and MAP reaction settling basins 4 Device 20, after entering a quarter that water reaches pond body product, turn on agitator controls rotating speed for 300-350rpm, is intaking and is adding Medicine all after the completion of continue stir 30min after, adjustment agitator speed be 200-250rpm, continue stirring 15-20min.

It is above-mentioned, Ca²⁺、Mg²⁺The bottom precipitation discharge line of sedimentation basin 2 sets the first mud valve 14, the bottom of MAP reaction settling basins 4 Portion's discharge line sets the second mud valve 25, after sedimentation basin racks up buck, opens bottom mud valve, and precipitation enters precipitation and receives Ji Chi.

It is above-mentioned, Ca²⁺、Mg²⁺The top of sedimentation basin 2 is set plus NaOH pipes 12 and plus Na₂CO₃Pipe 13.

Above-mentioned, the top of MAP reaction settling basins 4 sets and adds magnesium salts pipe 21, the salt pipe 22 that phosphorates, adds the pH value of NaOH pipes 23 and first Detector 24.

It is above-mentioned, acid adding pipe 30, top is set in the porch of Rinsing Area 5 the 2nd pH detectors 31 are set.

It is above-mentioned, Ca²⁺、Mg²⁺Sedimentation basin 2 and MAP reaction settling basins 4 are intermittent operation, and water is produced according to actual in production Amount and reactor volume, configure 2-4 platforms.

Ammonium magnesium phosphate（MAP）The precipitation method are at present to dissolution of contaminated water NH₄ ⁺A kind of-N removals method the most rapidly and efficiently, With making waste water nitrogen phosphor resource technical advantage.Its action principle is：There is Mg in sewage or solution²⁺、PO₄ ^3–、NH₄ ⁺Three kinds of ions In the presence of, and ion concentration product is more than MgNH₄PO₄·6H₂During O solubility product constants, there is MgNH₄PO₄·6H₂O is produced, equation For：Mg²⁺+PO₄ ^3–+NH₄ ⁺+6H₂O↔MgNH₄PO₄·6H₂O↓。MgNH₄PO₄·6H₂O is white, and it is guanite to be commonly called as（MAP）, it is A kind of industrial chemicals or agriculture slow release fertilizer.NH in the buck that Texaco's coal gas technique is produced₄ ⁺- N concentration is usually in 280- 400mg/L, belongs to middle low concentration, therefore the method removing such as not easy-to-use stripping, extraction, rectifying, and otherwise cost high benefit is low.And moral Scholar's Gu furnace gas temperature, pressure is high, and harmful components are simpler in technique waste water, hardly oil-containing and aldehydes matter, COD contents compared with Low, often in 800-1200mg/L, therefore the utility model processes buck with MAP sedimentations, transforms existing water circulation system, And by Chinese patent " a kind of device that guanite resource recovery is carried out to waste water nitrogen phosphorus "（201420458242.0）It is right Precipitation is reclaimed and utilized as slow-release fertilizer.But contain high concentration Ca in buck²⁺Ion, when pH value in reaction is more than 8.0, just has in water More than 30% Ca²⁺Ion conversion is Ca₅OH(PO4)₃(HAP).Coal gas technique produces wastewater flow rate huge, per hour output 20 When ten thousand mark cubic meters, the plant hydrogen that purity is more than 97.5%, 4.8 MPas, waste water yield is about 400 tons/h, due to waste water The big precipitation capacity for then producing daily of amount is also considerable.As removed Ca in advance²⁺Ion, you can obtain high-purity MgNH₄PO₄· 6H₂O, is very valuable industrial chemicals.Therefore be combined together for two methods by this patent, strict control operation condition, Finally realize to NH₄ ⁺-N、Ca²⁺、Mg²⁺The target that ion is efficiently removed and recycled, while drastically increasing ash water recycling The water quality of gasification furnace chilled water, makes equipment overhaul cycle extend about more than 6 months, realizes the reason of recycling industries and clean production Read.

Design feature of the present utility model and its principle：The top water outlet of Heisui River subsider 1 enters Ca²⁺、Mg²⁺Sedimentation basin 2, Ca is reached in inflow²⁺、Mg²⁺After a quarter of the volume of sedimentation basin 2, an agitator 11 is opened, it is 300- to control rotating speed 350rpm, opens plus NaOH pipes 12 are to dosing completion, while after keeping an agitator 11 to continue to stir 15-20min, opening and adding NaCO₃Pipe 13 to dosing is completed, and after continuing to stir 30min after the completion of water inlet and dosing all, adjustment agitator speed is 200- 250rpm, and continue stirring 15-20min after, stop an agitator 11 simultaneously stand.After a number agitator 11 stops, opening another One Ca²⁺、Mg²⁺Sedimentation basin, is equally operated, different Ca²⁺、Mg²⁺Sedimentation basin batch (-type) alternate run, according to what is produced The volume of water and reaction tank determines the Ca for needing²⁺、Mg²⁺Sedimentation basin quantity.Stop in an agitator 11 and stand 1.5-2h Afterwards, open and Ca²⁺、Mg²⁺The first connected draining pump 18 of the top discharge outlet of sedimentation basin 2, after the first draining pump 18 is precipitated Buck is discharged into ash water tank 3.Work as Ca²⁺、Mg²⁺After sedimentation basin 2 racks up buck, open bottom precipitation and export the first mud valve 14 Afterwards, precipitation enters the first precipitation collecting pit 15, and entering first by the second filter feed pump 16 precipitates filter 17.Due to moral Scholar's Gu gasifier temperature is high, and coal gasification procedure decomposition is more complete, therefore by after the precipitation of Heisui River subsider 1, water quality is more As clear as crystal, SS is only 20-60mg/L, is precipitated as white, with CaCO₃It is main component, CaO content is higher than 52% after measured, can Reclaimed as fabulous construction material, building materials raw material is done in the first precipitation filtering Hou Song brickmaking of filter 17 factory.

The bottom precipitation of Heisui River subsider 1 is that thick slag is given into filter by valve 6 to material pond 7, then by the first filter Material pump 16 is exported and filtered into thick slag filter 9, and thick slag after filter 9 by carrying out outer row.

In Ca²⁺、Mg²⁺The top of sedimentation basin 2 sets and adds NaOH pipes 12, adds Na₂CO₃In pipe 13, described NaOH for chemistry is pure, Analysis is pure or industrial NaOH, is added after being configured to saturated solution or any concentration, the control of NaOH additions with Ca in buck²⁺ The mol ratio of ion is 0.3:1—0.5:1, described NaCO₃For chemistry is pure, analyze pure or industrial NaCO₃, can be configured to satisfy Added with solution or any concentration or solid mode, Na₂CO₃Addition control with Ca in buck²⁺The mol ratio of ion It is 0.85:1--1.00:1.NaOH and Na₂CO₃With Ca in buck²⁺And a small amount of Mg²⁺Ion fully reacts under agitation, Generation CaCO₃、Ca(OH)₂、MgCO₃、Mg(OH)₂Etc. the precipitation of form, the concentration of scale-forming ion in buck is considerably reduced.

The water outlet of the downflow weir of ash water tank 3 enters MAP reaction settling basins 4 by the second draining pump 19.MAP is reached in inflow After a quarter of the volume of reaction tank 4, No. two agitators 20 are opened, control rotating speed for 300-350rpm, opened plus magnesium salts pipe 21 Completed to dosing, after keeping No. two agitators 20 to continue to stir 10-15min, open salt pipe 22 to the dosing that phosphorates and complete, and keep Stirring, after the completion of water inlet and dosing all, by the first pH value detector 24 and plus NaOH pipes 23, regulation reacting solution pH value is not Less than 9.0, after continuing to stir 10-15min after the completion of water inlet and dosing all, No. two rotating speeds of agitator 20 of adjustment are 150- 200rpm, after stirring 20-30min, stops No. two agitators 20 and stands.After No. two agitators 20 stop, another MAP is opened Reaction settling basin, is equally operated, different MAP reaction settling basin batch (-type) alternate runs, according to the water for producing and instead The volume of Ying Chi determines the MAP reaction settling basin quantity for needing.After No. two agitators 20 stop and stand 1.5-2h, open with The 3rd connected draining pump 29 of the top discharge outlet of MAP reaction settling basins 4, is entered the buck after precipitation by the 3rd draining pump 29 Rinsing Area 5.The process that acid adding is adjusted is completed by acid adding pipe 30, the 2nd pH detectors 31 in the porch of Rinsing Area 5, in delivery port Buck pH value reaches 9.0 or so discharges, and entering pipeline by Quench water pump 32 enters gasification furnace reuse.

Set at the top of MAP reaction settling basins 4 and add magnesium salts pipe 21, the salt pipe 22 that phosphorates, add the inspection of the pH value of NaOH pipes 23 and first Device 24 is surveyed, described magnesium salts is for chemistry is pure, analyze pure or industrial MgCl₂、MgSO₄One kind with MgO, is configured to saturation molten Added by magnesium salts pipe 21 after liquid or any concentration, it is 1.2 that addition is controlled in the mol ratio with addition microcosmic salt:1--1.5:1； Described microcosmic salt is for chemistry is pure, analyze pure or industrial NaH₂PO₄、Na₂HPO₄、Na₃PO₄、KH₂PO₄、K₂HPO₄And H₃PO₄In One kind, is added after being configured to saturated solution or any concentration by microcosmic salt pipe 22, addition control with NH in buck₄ ⁺- N's rubs You are than being 0.6:1--1.1:1.Reacting solution pH value is detected by the first pH value detector 24 after the completion of dispensing, by adding NaOH pipes 23 add NaOH solution, and regulation reacting solution pH value is not less than 9.0.The PO in buck under stirring and alkalescence condition₄ ^3–With NH₄ ⁺、Mg²⁺Ion fully reacts, generation MAP precipitations, NH in buck₄ ⁺- N clearances reach 60-90%, hardness be reduced to 60- 150mg/L, controls in less scaling safe range.

After MAP reaction settling basins 4 rack up buck, after opening bottom precipitation the second mud valve 25 of outlet, precipitation enters Second precipitation collecting pit 26, MAP recovery device 28 is entered by filter feed pump 27.Described MAP recovery device 28 refers to Chinese patent " a kind of device that guanite resource recovery is carried out to waste water nitrogen phosphorus "（201420458242.0）Due to have passed through The precipitation process of early stage, therefore the precipitation that MAP reaction settling basins 4 are produced is very pure, is white, by MAP recovery device 28 After dehydrating, ammonium magnesium phosphate content is higher than 95%, can be reclaimed as the industrial chemicals of high-quality or agricultural slow-release fertilizer, is realized The theory of recycling industries and clean production, while also reducing subsequent biochemical processing cost.

MAP reaction settling basins 4 are intermittent operation, according to actual aquifer yield and reactor volume in production, configure 2-4 platforms More than.

Application examples one：

With the buck that China Petroleum ＆ Chemical Co., Ltd. Maoming Branch's Texaco gasifier coal process for making hydrogen is produced It is objective for implementation, Ca is contained in the buck after being precipitated through Heisui River subsider²⁺1150-1300mg/L、Mg²⁺120-150mg/L、NH₄ ⁺- N292.8-358.7mg/L, COD988.6-1023.2mg/L, SS are 26-40mg/L, pH value 8.1-8.34, on the subsider of Heisui River Portion's water outlet enters Ca²⁺、Mg²⁺Sedimentation basin, Ca is reached in inflow²⁺、Mg²⁺After a quarter of sedimentation basin volume, stirring is opened Device, controls rotating speed for 300-350rpm, opens plus NaOH pipes to dosing is completed, the control of NaOH additions with Ca in buck²⁺From The mol ratio of son is 0.3:1—0.5:1, after being kept stirring for device stirring 15-20min, open plus Na₂CO₃Pipe to dosing is completed, Na₂CO₃Addition control with Ca in buck²⁺The mol ratio of ion is 0.85:1--1.00:1.All completed in water inlet and dosing Afterwards continue stir 30min after, adjustment agitator speed be 200-250rpm, and continue stirring 15-20min after, stopping agitator And stand.After agitator stops and stands 1.5-2h, open and Ca²⁺、Mg²⁺The connected draining pump of sedimentation basin top discharge outlet, Buck after draining pump is precipitated is discharged into ash water tank.Work as Ca²⁺、Mg²⁺After sedimentation basin racks up buck, bottom precipitation is opened After outlet valve, precipitation enters precipitation collecting pit, and precipitation filter is entered by filter feed pump, in precipitation filter filtering Building materials raw material does in Hou Song brickmaking factory.

The water outlet of ash water tank downflow weir enters MAP reaction settling basins by draining pump, and MAP reaction pond bodies are reached in inflow After long-pending a quarter, turn on agitator controls rotating speed for 300-350rpm, opens plus magnesium salts pipe to dosing is completed, addition It is 1.2 to control in the mol ratio with addition microcosmic salt:1--1.5:1, after being kept stirring for device continuation stirring 10-15min, opening phosphorates Salt pipe to dosing complete, addition control with NH in buck₄ ⁺The mol ratio of-N is 0.6:1—1.1:1, and be kept stirring for, Water inlet and dosing all after the completion of, by the first pH value detector and plus NaOH manage, regulation reacting solution pH value be not less than 9.0. After continuing to stir 10-15min after the completion of water inlet and dosing all, adjustment agitator speed is 150-200rpm, stirs 20-30min Afterwards, stop agitator and stand.After 1.5-2h is stood, the draining pump that unlatching is connected with MAP reaction settling basins top discharge outlet, Buck after precipitation is entered by Rinsing Area by draining pump.It is to buck monitoring index now：NH₄ ⁺It is-N31.3-80.4mg/L, hard It is 46.4-102.2mg/L, COD693.5-1080.7mg/L, pH value 8.92-9.99 to spend, therefore by buck after precipitation reaction Middle NH₄ ⁺-N、Ca²⁺、Mg²⁺Ion is significantly removed, and water quality is significantly improved.After MAP reaction settling basins rack up buck, Bottom precipitation outlet valve is opened, precipitation enters precipitation collecting pit, MAP recovery device is entered by filter feed pump.

Add hydrochloric acid, the 2nd pH detectors to complete the process that acid adding is adjusted by acid adding pipe in Rinsing Area porch, going out Mouth of a river buck pH value is 8.97-9.01, and the too drastic water supply pump of about four/threeway is returned after entering chilled water pipeline system to gasification furnace With remainder enters sewage disposal system.

There are three classes to precipitate in the system, a class is the thick slag that Heisui River subsider is produced, filtering is entered after trench bottom collection During machine is to material pond, then it is pumped into thick slag filter and is filtered by filter feed, last thick slag carries out outer row or utilization.The Two classes are Ca²⁺、Mg²⁺The precipitation that sedimentation basin is produced, into precipitation collecting pit, precipitation filter is entered by filter feed pump, In precipitation filter filtering Hou Song brickmaking, building materials raw material does in factory.Because water quality is more as clear as crystal after Heisui River subsider precipitation, SS Only 26-40mg/L, so precipitation is with CaCO₃It is main component, white, CaO content is higher than 52% after measured, can be used as fabulous Construction material reclaimed.3rd class is the precipitation produced in MAP reaction settling basins, PO₄ ^3–With NH in buck₄ ⁺-N、Mg²⁺ Ion fully reacts under stirring and alkalescence condition, generation MAP, white precipitate.Due to have passed through early stage except Ca²⁺Precipitation, ash Water SS concentration is smaller, so precipitation is with MAP as main component, MAP contents are higher than 95% in precipitating after measured, can be used as high-quality Industrial chemicals or agricultural slow-release fertilizer are reclaimed, therefore realize the theory of recycling industries and clean production, while also reducing follow-up Biochemical treatment cost.

The system flow is simple, easily operated, is a kind of rapidly and efficiently removal buck NH₄ ⁺- N and Ca²⁺、Mg²⁺Ion it is new Type ash water process and resource recycling system, drastically increase the water quality that ash water recycling makees gasification furnace chilled water, make equipment Time between overhauls(TBO) extends about more than 6 months, and the precipitation for producing can be reclaimed respectively as the construction material of high-quality and agricultural slow-release fertilizer Utilize, reduce subsequent biochemical processing cost, realize the theory of recycling industries and clean production.

Application examples two：

With in Zhanjiang section Guangdong refinery Texaco gasifier coal process for making hydrogen produce buck as objective for implementation, through black Contain Ca in buck after water subsider precipitation²⁺1009.5-1290.2mg/L、Mg²⁺90-130mg/L、NH₄ ⁺-N272.4- 338.9mg/L, COD787.6-1009.9mg/L, SS are 25-38mg/L, pH value 8.1-8.42, and Heisui River subsider top water outlet is entered Enter Ca²⁺、Mg²⁺Sedimentation basin, Ca is reached in inflow²⁺、Mg²⁺After a quarter of sedimentation basin volume, turn on agitator, control turns Speed be 300-350rpm, open plus NaOH pipes to dosing complete, NaOH additions control with Ca in buck²⁺The mol ratio of ion It is 0.3:1—0.5:1, after being kept stirring for device stirring 15-20min, open plus Na₂CO₃Pipe to dosing is completed, Na₂CO₃Addition Control with Ca in buck²⁺The mol ratio of ion is 0.85:1--1.00:1.Continue to stir after the completion of water inlet and dosing all After 30min, adjustment agitator speed be 200-250rpm, and continue stirring 15-20min after, stop agitator simultaneously stand.Stirring Mix after device stops and stand 1.5-2h, open and Ca²⁺、Mg²⁺The connected draining pump of sedimentation basin top discharge outlet, by draining pump Buck after precipitation is discharged into ash water tank.Work as Ca²⁺、Mg²⁺After sedimentation basin racks up buck, after opening bottom precipitation outlet valve, Precipitation enters precipitation collecting pit, and precipitation filter is entered by filter feed pump, in precipitation filter filtering Hou Song brickmaking factory Do building materials raw material.

The water outlet of ash water tank downflow weir enters MAP reaction settling basins by draining pump, and MAP reaction pond bodies are reached in inflow After long-pending a quarter, turn on agitator controls rotating speed for 300-350rpm, opens plus magnesium salts pipe to dosing is completed, addition It is 1.2 to control in the mol ratio with addition microcosmic salt:1--1.5:1, after being kept stirring for device continuation stirring 10-15min, opening phosphorates Salt pipe to dosing complete, addition control with NH in buck₄ ⁺The mol ratio of-N is 0.6:1—1.1:1, and be kept stirring for, Water inlet and dosing all after the completion of, by the first pH value detector and plus NaOH manage, regulation reacting solution pH value be not less than 9.0. After continuing to stir 10-15min after the completion of water inlet and dosing all, adjustment agitator speed is 150-200rpm, stirs 20-30min Afterwards, stop agitator and stand.After 1.5-2h is stood, the draining pump that unlatching is connected with MAP reaction settling basins top discharge outlet, Buck after precipitation is entered by Rinsing Area by draining pump.It is to buck monitoring index now：NH₄ ⁺It is-N31.3-66.7mg/L, hard It is 46.9-108.2mg/L, COD747.2-990.8mg/L, pH value 8.95-9.93 to spend, therefore by buck after precipitation reaction Middle NH₄ ⁺-N、Ca²⁺、Mg²⁺Ion is significantly removed, and water quality is significantly improved.After MAP reaction settling basins rack up buck, Bottom precipitation outlet valve is opened, precipitation enters precipitation collecting pit, MAP recovery device is entered by filter feed pump.

Hydrochloric acid is added by acid adding pipe when buck enters Rinsing Area porch, due to the turbulent flow of current, hydrochloric acid with Buck is fully mixed in ash water tank, and delivery port buck pH value reaches 8.96-9.01, and the too drastic water supply pump of about four/threeway enters To gasification furnace reuse after chilled water pipeline system, remainder enters sewage disposal system.

There are three classes to precipitate in the system, a class is the thick slag that Heisui River subsider is produced, filtering is entered after trench bottom collection During machine is to material pond, then it is pumped into thick slag filter and is filtered by filter feed, last thick slag carries out outer row or utilization.The Two classes are Ca²⁺、Mg²⁺The precipitation that sedimentation basin is produced, into precipitation collecting pit, precipitation filter is entered by filter feed pump, In precipitation filter filtering Hou Song brickmaking, building materials raw material does in factory.Because water quality is more as clear as crystal after Heisui River subsider precipitation, SS Only 26-40mg/L, so precipitation is with CaCO₃It is main component, white, CaO content is higher than 52% after measured, can be used as fabulous Construction material reclaimed.3rd class is the precipitation produced in MAP reaction settling basins, PO₄ ^3–With NH in buck₄ ⁺-N、Mg²⁺ Ion fully reacts under stirring and alkalescence condition, generation MAP, white precipitate.Due to have passed through early stage except Ca²⁺Precipitation, ash Water SS concentration is smaller, so precipitation is with MAP as main component, MAP contents are higher than 95% in precipitating after measured, can be used as high-quality Industrial chemicals or agricultural slow-release fertilizer are reclaimed, therefore realize the theory of recycling industries and clean production, while also reducing follow-up Biochemical treatment cost.

The system flow is simple, easily operated, is a kind of rapidly and efficiently removal buck NH₄ ⁺- N and Ca²⁺、Mg²⁺Ion it is new Type ash water process and resource recycling system, drastically increase the water quality that ash water recycling makees gasification furnace chilled water, make equipment Time between overhauls(TBO) extends about more than 6 months, and the precipitation for producing can be reclaimed respectively as the construction material of high-quality and agricultural slow-release fertilizer Utilize, reduce subsequent biochemical processing cost, realize the theory of recycling industries and clean production.

It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and And in the case of without departing substantially from spirit or essential attributes of the present utility model, can in other specific forms realize that this practicality is new Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation Involved claim.

Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each implementation method is only wrapped Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should Specification an as entirety, the technical scheme in each embodiment can also be formed into those skilled in the art through appropriately combined May be appreciated other embodiment.

Claims (5)

1. a kind of Texaco gasifier buck high efficient resourcing recycling system, including Heisui River subsider, Ca²⁺、Mg²⁺Precipitation Pond, ash water tank, MAP reaction settling basins, Rinsing Area and filter are to material pond, it is characterised in that the Heisui River sedimentation trench bottom leads to Subsider lower valve connection filter is crossed to material pond, filter connects thick slag to the outlet of material pond by the first filter feed pump Filter, the top delivery port of Heisui River subsider connects Ca by valve on subsider²⁺、Mg²⁺The bottom water inlet of sedimentation basin, Ca²⁺、Mg²⁺The top discharge outlet of sedimentation basin connects the first draining pump, the delivery port connection ash water tank of the first draining pump, ash water tank Top discharge outlet by the second draining pump connect MAP reaction settling basins, MAP reaction settling basins by the 3rd draining pump connection Rinsing Area, the downflow weir outlet connection chilled water intake pump of Rinsing Area；Ca²⁺、Mg²⁺The bottom of sedimentation basin is by precipitating discharge pipe Road connection first precipitates collecting pit, and the first precipitation collecting pit connects first and precipitates filter by the second filter feed pump；MAP The bottom of reaction settling basin connects the second precipitation collecting pit by precipitating discharge line, and the second precipitation collecting pit is connected by feed pump Connect MAP recovery device.

2. a kind of Texaco gasifier buck high efficient resourcing recycling system according to claim 1, its feature exists In the Ca²⁺、Mg²⁺An agitator and No. two agitators are respectively equipped with sedimentation basin and MAP reaction settling basins.

3. a kind of Texaco gasifier buck high efficient resourcing recycling system according to claim 1, its feature exists In the Ca²⁺、Mg²⁺Sedimentation basin bottom precipitation discharge line sets the first mud valve, MAP reaction settling basins bottom discharge line Second mud valve is set.

4. a kind of Texaco gasifier buck high efficient resourcing recycling system according to claim 1, its feature exists In the Ca²⁺、Mg²⁺Sedimentation basin top is set plus NaOH pipes and plus Na₂CO₃Pipe.

5. a kind of Texaco gasifier buck high efficient resourcing recycling system according to claim 1, its feature exists In the MAP reaction settling basins top sets and adds magnesium salts pipe, the salt pipe that phosphorates, adds NaOH pipes and the first pH value detector.