CN206793393U - Green ardealite solid waste processing reutilization system - Google Patents
Green ardealite solid waste processing reutilization system Download PDFInfo
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- CN206793393U CN206793393U CN201720637685.XU CN201720637685U CN206793393U CN 206793393 U CN206793393 U CN 206793393U CN 201720637685 U CN201720637685 U CN 201720637685U CN 206793393 U CN206793393 U CN 206793393U
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Abstract
The utility model discloses a kind of green ardealite solid waste processing reutilization system, including pulp mixing channel, circulation reaction component, gas-liquid separator and the slurries filtration machine being sequentially connected by liquid phase pipeline, circulation reaction component is connected with aerating pipeline and ammonification pipeline, gas-liquid separator is connected with circulation of tail gas reuse means, using the beneficial effects of the utility model the be ardealite dead meal from production phosphoric acid, CO2From waste gas caused by synthesis ammonia, CO is utilized2The sulfate radical in ardealite is replaced, ammonium sulfate fertilizer is obtained, is utilized the Sulphur ressource in ardealite, while consume substantial amounts of CO2Waste gas, reduce the CO of synthetic ammonia installation2The discharge capacity of waste gas, the utility model in the case where plant investment, operating cost are low, can realize the recycling of Sulphur ressource in ardealite solid waste.
Description
Technical field
It the utility model is related to and belong to chemical production equipment field, and in particular to a kind of green ardealite solid gives up
Gurry handles reutilization system.
Background technology
Ardealite be mainly sulphur dioxide of phosphor chemical industry production phosphoric acid by wet process when caused solid waste, produce 1 ton of phosphoric acid (with
100%P2O5Meter) produce 4.8~5.0 tons of ardealites (butt).The ardealite volume of cargo in storage in China is with 5,000 ten thousand tons/year of speed at present
Degree increases, and total volume of cargo in storage alreadys exceed 300,000,000 tons.Ardealite is moist fine powder, and 95% particle is less than 0.2mm, Free water
Content 20%~30%, and a small amount of objectionable impurities such as phosphorous, fluorine, organic matter and silica, in acidity, pH value is typically 4.5
Hereinafter, any discharge can cause environmental pollution, if setting fixed stockyard, not only occupation of land is big, and investment is high, and to the requirement in place
Height, prolonged accumulation, due to wind erosion and weathering, can cause the pollution of surface water or underground water.Ardealite main chemical compositions
It is calcium sulphate dihydrate, major impurity is phosphorus, fluorine, organic matter, has the impurity such as alkali metal salt, silicon, iron, aluminium, magnesium, and it contains a variety of latent
The resources such as sulphur, calcium in purposes, but the presence of wherein phosphorus, fluorine seriously limits its comprehensive utilization.At present, the whole world is to phosphorus stone
The average utilization of cream only reaches 4.5%, in Chinese utilization rate less than 30%.
Utility model content
To solve above technical problem, the purpose of this utility model is that providing a kind of green ardealite solid gives up
Gurry handles reutilization system.
Technical scheme is as follows：
What one of the purpose of this utility model was realized in：
A kind of green ardealite solid waste processing reutilization system, its key are：Including passing through liquid phase
Pulp mixing channel, circulation reaction component, gas-liquid separator and the slurries filtration machine that pipeline is sequentially connected, the circulation reaction component
Aerating pipeline and ammonification pipeline are connected with, the gas-liquid separator is connected with circulation of tail gas reuse means.Using above-mentioned technology
Scheme forms ardealite slurry after ardealite is added into water of sizing mixing, and liquefied ammonia is added after ardealite slurry is sent into circulation reaction component
And it is passed through CO2Gas, after fully being reacted with ardealite slurry, then through gas-liquid separation ammonium sulfate liquid and calcium carbonate solid are obtained,
Obtained ammonium sulfate can be used as fertilizer after ammonium sulfate liquid concentration, and solid carbonic acid calcium can as the raw materials for production of cement,
The primary raw material of production is discarded ardealite, and carbon dioxide may be derived from synthesizing CO caused by ammonia2Waste gas, two kinds of wastes all obtain
Make full use of, green, economic, environmental protection.
Further, above-mentioned circulation reaction component includes the circulation flow reactor of two series connection, the liquid of the pulp mixing channel
Outlet is connected with the liquid inlet of first circulation flow reactor, and the gas access of first circulation flow reactor is connected with
The aerating pipeline, first circulation flow reactor are connected with the ammonification pipeline, the liquid of first circulation flow reactor
Body outlet is connected with the liquid inlet of second circulation flow reactor, the gas vent of first circulation flow reactor and the
The gas access connection of two circulation flow reactors, the liquid outlet of second circulation flow reactor and the gas-liquid separation
The liquid inlet connection of device.High pressure CO is passed through to first circulation flow reactor using the program2Gas, this high pressure CO2Gas with
Circulation is formed between ardealite slurry in circulation flow reactor and has the function that automatic stirring, without additionally mounted agitating device,
And the automatic stirring effect of gas is evenly reacted more fully, and remaining CO in first circulation flow reactor2With mixing for ammonia
Closing gas still has certain pressure, then it is sent into second circulation flow reactor, is reacted by two step circulation, effectively lifting
Ardealite slurry and CO2, reactivity between ammonia, the yield of ammonium sulfate is improved, using this two-step reaction ammonium sulfate
Yield be up to 97%.
Above-mentioned circulation of tail gas reuse means includes scrubbing tower, the gas vent of second circulation flow reactor and institute
State gas access of the gas vent of gas-liquid separator respectively with the scrubbing tower to be connected, the liquid outlet connection of the scrubbing tower
There is circulating tank, the liquid outlet of the circulating tank is connected with the spray liquid entrance of the scrubbing tower.Scrubbing tower is passed through using the program
Tail gas is washed again, the ammonia for avoiding carrying secretly in tail gas directly discharge causes atmosphere pollution.
The liquid outlet of above-mentioned circulating tank is connected with the liquid inlet of the pulp mixing channel.Made using this scheme cleaning solution
It is sent into pulp mixing channel for water of sizing mixing and is mixed in advance with ardealite, the ammonia in cleaning solution obtains secondary use.
The top of above-mentioned circulating tank connects with the top of the scrubbing tower through air pressure balance pipeline.Ensure to follow using this scheme
Air pressure balance in ring tank and scrubbing tower, the cleaning solution circulation in scrubbing tower are unimpeded.
The bottom of towe of above-mentioned scrubbing tower is connected with cooling water inlet pipe road, and the tower top of the scrubbing tower is connected with cooling water water outlet
Pipeline, the tower top of the scrubbing tower are also associated with discharge duct and shower water addition pipeline.Shower water can be passed through using the program
Add pipeline and add new shower water, ensure that the cleaning solution liquid level in circulating tank keeps stable all the time.
What the two of the purpose of this utility model were realized in：
A kind of green ardealite solid waste processing reuse method including above-mentioned processing system, it is crucial
It is to carry out according to the following steps：
The first step, added in the pulp mixing channel after ardealite and add water of sizing mixing and be configured to ardealite slurries；
Second step, the ardealite slurries are pumped into first circulation flow reactor, while pass through the ammonification pipeline
Liquefied ammonia or gas ammonia are added to first circulation flow reactor, is led to by the aerating pipeline to first circulation flow reactor
Enter high pressure CO2Gas, the first gas-liquid mixture is obtained after first set reaction, first gas-liquid mixture is sent into second ring
In flow reactor, while by the remaining CO in first circulation flow reactor2Second institute is accessed with the mixed gas of ammonia
State progress secondary response in circulation flow reactor and obtain the second gas-liquid mixture；
3rd step, second gas-liquid mixture is introduced into the gas-liquid separator, described in the liquid feeding after separation
Slurries filtration machine is filtrated to get ammonium sulfate and calcium carbonate solid, and the gas after separation is sent into hydro-peening in the scrubbing tower, so
Hydro-peening liquid is sent into the circulating tank afterwards；
4th step, it is fed again into a part of hydro-peening liquid in the circulating tank in the scrubbing tower and carries out circulation spray
Wash, hydro-peening liquid described in another part, which is discharged into the pulp mixing channel, turns into the water of sizing mixing.
CO is passed through using above-mentioned technical proposal2Gas is essentially from CO caused by synthesis ammonia2Waste gas, another raw material phosphor stone
Two kinds of discarded objects are so become Fei Weibao simultaneously, had both avoided the direct discharge of discarded object by dead meal of the cream from production phosphoric acid
The environmental protection that brings, potential safety hazard, while product has larger economic value again；And the tail gas with ammonia caused by preparation process
It is washed down by ammonia after spray washing into cleaning solution, other gases meet environmental requirement and are discharged, and what is obtained washes
The recyclable washing of liquid is washed, also water of sizing mixing can be used as to be sent into pulp mixing channel, is not produced in so whole production process any useless
Gurry, all elements are all effectively utilized, environment friendliness.
As preferred：Calcium carbonate solid obtained by washing repeatedly collects washings, and the washings are sent into the circulation
In tank.Using the washed recovery of the ammonium sulfate carried secretly in program solid carbonic acid calcium, obtained pure calcium carbonate is higher, while
The yield of ammonium sulfate is added, and washings can also carry out twice laid again.
The tower top of above-mentioned scrubbing tower is connected with shower water addition pipeline, the shower water newly added through shower water addition pipeline
And the total amount of the washings entered in the circulating tank is equal to the total amount for the hydro-peening liquid discharged from the circulating tank.Adopt
Ensure that the cleaning solution that circulating tank is maintains to balance all the time with this scheme, ensure being smoothed out for whole reaction process.
The bottom of towe of above-mentioned scrubbing tower is connected with cooling water inlet pipe road, and the tower top of the scrubbing tower is connected with cooling water water outlet
Pipeline；The top of the circulating tank connects with the top of the scrubbing tower through air pressure balance pipeline.Ensure to circulate using this scheme
Air pressure balance in tank and scrubbing tower, the cleaning solution circulation in scrubbing tower are unimpeded.
Beneficial effect：Using the beneficial effects of the utility model the be ardealite dead meal from production phosphoric acid, CO2Come from
Waste gas caused by synthesizing ammonia, utilizes CO2The sulfate radical in ardealite is replaced, ammonium sulfate fertilizer is obtained, provides the sulphur in ardealite
Source is utilized, while consumes substantial amounts of CO2Waste gas, reduce the CO of synthetic ammonia installation2The discharge capacity of waste gas, the utility model
In the case where plant investment, operating cost are low, the recycling of in ardealite solid waste Sulphur ressource can be realized.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
With reference to embodiment and accompanying drawing, the utility model is described in further detail.
Embodiment 1, as shown in figure 1, a kind of green ardealite solid waste processing reutilization system, including it is logical
Cross pulp mixing channel 1, circulation reaction component, gas-liquid separator 4 and slurries filtration machine 5 that liquid phase pipeline is sequentially connected, the ring
Stream reaction component is connected with aerating pipeline 3 and ammonification pipeline 8, and the gas-liquid separator 4 is connected with circulation of tail gas reuse means.
The circulation reaction component include two series connection circulation flow reactors 2, the liquid outlet of the pulp mixing channel 1 with
The liquid inlet connection of first circulation flow reactor 2, the slurrying tank 1 is interior to be provided with agitator, and first circulation is anti-
The gas access of device 2 is answered to be connected with the aerating pipeline 3, first circulation flow reactor 2 is connected with the ammonification pipeline 8,
The liquid outlet of first circulation flow reactor 2 is connected with the liquid inlet of second circulation flow reactor 2, first institute
The gas vent for stating circulation flow reactor 2 is connected with the gas access of second circulation flow reactor 2, and second circulation is anti-
The liquid outlet of device 2 is answered to be connected with the liquid inlet of the gas-liquid separator 4, the slurries filtration machine 5 is band filter.
The circulation of tail gas reuse means includes scrubbing tower 6, the gas vent of second circulation flow reactor 2 and
Gas access of the gas vent of the gas-liquid separator 4 respectively with the scrubbing tower 6 is connected, the liquid discharge of the scrubbing tower 6
Mouth is connected with circulating tank 7, and the circulating tank 7 is provided with two liquid outlets, the spray of one of liquid outlet and the scrubbing tower 6
The connection of liquid entrance is drenched, another liquid outlet of the circulating tank 7 is connected with the liquid inlet of the pulp mixing channel 1, described
The top of circulating tank 7 connects with the top of the scrubbing tower 6 through air pressure balance pipeline 9, and heat exchange is distributed with inside the scrubbing tower 6
Tubulation, bottom of towe are connected with cooling water inlet pipe road 10, and the tower top of the scrubbing tower 6 is connected with cooling water outlet pipe road 11, described
The tower top of scrubbing tower 6 is also associated with discharge duct 12 and shower water addition pipeline 13.
Embodiment 2, a kind of green ardealite solid waste processing of system including described in embodiment 1 are sharp again
With method, carry out according to the following steps：
The first step, added in the pulp mixing channel 1 after ardealite and add water of sizing mixing and be configured to ardealite slurries；
Second step, the ardealite slurries are pumped into first circulation flow reactor 2, while pass through the ammonification pipeline
8 add liquefied ammonia or gas ammonia to first circulation flow reactor 2, are reacted by the aerating pipeline 3 to first circulation
Device 2 is passed through high pressure CO2Gas, the first gas-liquid mixture is obtained after first set reaction, first gas-liquid mixture is sent into second
In the circulation flow reactor 2, while by the remaining CO in first circulation flow reactor 22Accessed with the mixed gas of ammonia
Secondary response is carried out in second circulation flow reactor 2 and obtains the second gas-liquid mixture, in two circulation flow reactors 2
CO2, liquefied ammonia and ardealite slurries reaction time generally control at 5 minutes or so；
3rd step, second gas-liquid mixture is introduced into the gas-liquid separator 4, the liquid after vacuum flashing separation
It is sent into the slurries filtration machine 5 and is filtrated to get ammonium sulfate and calcium carbonate solid, the gas after separation is sent into the scrubbing tower 6
Interior hydro-peening, hydro-peening liquid is then sent into the circulating tank 7, wherein obtaining product ammonium sulfate after ammonium sulfate concentration, instead
After backwashing washs calcium carbonate solid and collects washings, and the washings are sent into the circulating tank 7；
4th step, it is fed again into the scrubbing tower 6 and is circulated into a part of hydro-peening liquid in the circulating tank 7
Hydro-peening, hydro-peening liquid described in another part, which is discharged into the pulp mixing channel 1, turns into the water of sizing mixing.
Heat exchanging pipe is distributed with inside the scrubbing tower 6, bottom of towe is connected with cooling water inlet pipe road 10, the scrubbing tower 6
Tower top be connected with cooling water outlet pipe road 11, the tower top of the scrubbing tower 6 is also associated with shower water addition pipeline 13, through the spray
The shower water and the total amount of the washings entered in the circulating tank 7 that water drenching addition pipeline 13 newly adds are equal to from described
The top of the total amount for the hydro-peening liquid discharged in circulating tank 7, the top of the circulating tank 7 and the scrubbing tower 6 is through barometric pipe
Road 9 connects.
Finally it should be noted that foregoing description is only preferred embodiment of the present utility model, the common skill of this area
Art personnel on the premise of without prejudice to the utility model aims and claim, can make under enlightenment of the present utility model
Expression, such conversion are each fallen within the scope of protection of the utility model as multiple types.
Claims (6)
- A kind of 1. green ardealite solid waste processing reutilization system, it is characterised in that：Including passing through liquid-phase tube Pulp mixing channel (1), circulation reaction component, gas-liquid separator (4) and the slurries filtration machine (5) that road is sequentially connected, the circulation Reaction component is connected with aerating pipeline (3) and ammonification pipeline (8), and the gas-liquid separator (4) is connected with circulation of tail gas recycling Device.
- 2. green ardealite solid waste processing reutilization system according to claim 1, it is characterised in that： The circulation reaction component includes the circulation flow reactor (2) of two series connection, the liquid outlet and first of the pulp mixing channel (1) The liquid inlet connection of the individual circulation flow reactor (2), the gas access of first circulation flow reactor (2) is connected with described Aerating pipeline (3), first circulation flow reactor (2) are connected with the ammonification pipeline (8), first circulation flow reactor (2) liquid outlet is connected with the liquid inlet of second circulation flow reactor (2), first circulation flow reactor (2) Gas vent be connected with the gas access of second circulation flow reactor (2), the liquid of second circulation flow reactor (2) Body outlet is connected with the liquid inlet of the gas-liquid separator (4).
- 3. green ardealite solid waste processing reutilization system according to claim 2, it is characterised in that： The circulation of tail gas reuse means includes scrubbing tower (6), the gas vent of second circulation flow reactor (2) and described Gas access of the gas vent of gas-liquid separator (4) respectively with the scrubbing tower (6) is connected, the liquid of the scrubbing tower (6) Outlet is connected with circulating tank (7), and the liquid outlet of the circulating tank (7) is connected with the spray liquid entrance of the scrubbing tower (6).
- 4. green ardealite solid waste processing reutilization system according to claim 3, it is characterised in that： The liquid outlet of the circulating tank (7) is connected with the liquid inlet of the pulp mixing channel (1).
- 5. the green ardealite solid waste processing reutilization system according to claim 3 or 4, its feature exist In：The top of the circulating tank (7) connects with the top of the scrubbing tower (6) through air pressure balance pipeline (9).
- 6. green ardealite solid waste processing reutilization system according to claim 5, it is characterised in that： The bottom of towe of the scrubbing tower (6) is connected with cooling water inlet pipe road (10), and the tower top of the scrubbing tower (6) is connected with cooling water and gone out Waterpipe (11), the tower top of the scrubbing tower (6) are also associated with discharge duct (12) and shower water addition pipeline (13).
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| CN201720637685.XU CN206793393U (en) | 2017-06-02 | 2017-06-02 | Green ardealite solid waste processing reutilization system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107051176A (en) * | 2017-06-02 | 2017-08-18 | 中化重庆涪陵化工有限公司 | The ardealite solid waste processing reutilization system and processing method of environmental protection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051176A (en) * | 2017-06-02 | 2017-08-18 | 中化重庆涪陵化工有限公司 | The ardealite solid waste processing reutilization system and processing method of environmental protection |
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