CN207748858U - The production line of magnesium sulfate is prepared using alkylation spent acid - Google Patents
The production line of magnesium sulfate is prepared using alkylation spent acid Download PDFInfo
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- CN207748858U CN207748858U CN201721737961.6U CN201721737961U CN207748858U CN 207748858 U CN207748858 U CN 207748858U CN 201721737961 U CN201721737961 U CN 201721737961U CN 207748858 U CN207748858 U CN 207748858U
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Abstract
The utility model is related to be alkylated spent acid process field, the production line of magnesium sulfate is prepared especially with alkylation spent acid.Including reactor, mixing channel, neutralizing tank, filter press, crystallizing tower, centrifuge and dryer, the outlet of reactor bottom is positioned at the surface of mixing channel, the outlet of mixing channel and the import of neutralizing tank connect, filter press includes filter press I and filter press II, the outlet of neutralizing tank is connect with the import of filter press I, the liquid outlet of filter press I and the inlet of crystallizing tower connect, and the solid outlet of centrifuge and the feed inlet of dryer connect, and the liquid outlet of centrifuge and the inlet of mixing channel connect；It further include slurrying slot, the solids inlet of slurrying slot is connect with the solid outlet of filter press I, and the outlet of slurrying slot is connect with the import of filter press II, and the liquid outlet of filter press II is connect with the inlet of slurrying slot, slurrying slot is equipped with liquid outlet, the inlet connection of the liquid outlet and mixing channel.Its production cost is low, takes full advantage of alkylation spent acid, and the solid sulphuric acid magnesium addition of preparation is few, purity is high.
Description
Technical field
It is especially a kind of to prepare magnesium sulfate using alkylation spent acid the utility model is related to be alkylated spent acid process field
Production line.
Background technology
Currently, the atmosphere pollution situation very severe in China, with pellet (PM10), fine particle (PM2.5)
The regional atmospheric environment problem for being characterized pollutant becomes increasingly conspicuous.In May, 2015, National Development and Reform Committee, the Ministry of Finance, environmental protection
Seven department such as portion, which combines, to print and distribute《Accelerate product oil quality upgrading programme of work》, the main target of scheme determines January 1 in 2017
Automobile-used vapour, the diesel oil of state of enforcement V standards in China a few days ago.Comprehensive upgrading work of petrol and diesel oil has been very urgent, this
It requires oil refining enterprise to accelerate upgrading paces, improves clear gusoline production and deliverability, complete quality liter comprehensively in advance
Grade task fulfils oil refining industry prevention and control of air pollution action target responsibility.Alkylation process is to make iso-butane and alkene in strong acid
Reaction generates alkylate oil under the action of catalyst, mainly organizes as C8 isoparaffins, alkylate oil octane number height, sensibility
Small, sulfur-bearing, aromatic hydrocarbons, alkene, do not have ideal volatility and clean flammability, are the ideals of aviation gasoline and motor petrol
Blend component.《Accelerate product oil quality upgrading programme of work》In, build the emphasis that alkyl plant is the following gasoline upgrading
One of direction.
Currently, China's oil plant mostly uses the sulfuric acid alkylation technique using the concentrated sulfuric acid as catalyst, 1t hydrocarbon is often produced
Carburetion will generate the alkylation spent acid of 80-100kg.It is alkylated spent acid abbreviation spent acid, is a kind of colloidal liquid that viscosity is larger,
Color and luster is in dark red, and property is unstable, distributes particularity stink, it is difficult to handle, serious pollution is brought to ecological environment.As directly
Discharge, will bring serious pollution to ecological environment.Therefore, can the development of sulfuric acid alkylation rationally handle close pass with spent acid
System.
Currently, there are two types of techniques for the waste sulfuric acid from alkylation processing of batch production.The first is cracking industrial sulphuric acid processed, the technique
Technology maturation, required fuel refinery can facilitate offer, more thoroughly to spent acid processing, the disadvantage is that：First, oil plant does not have sulphur
Acid treatment device need to increase mating sulfuric acid production plant using the technique, and the another long flow path, equipment is more, and control is complicated, disposably
Investment increases；Second, operating cost is high, and device consumes a large amount of fuel gas and electric power every year, and energy consumption is more, required catalyst valence
Lattice are expensive；Third, environmental protection pressure is big, and the sulfur dioxide concentration of this process route smoke stack emission is about 760mg/Nm3, such as meet dioxy
Change the concentration of emission limit value 400mg/Nm of amounts of sulphur contaminants3Prescribed requirement, it is necessary to it is newly-built it is a set of schedule to last purifier, as ammonia process is de-
Sulphur, alkali desulphurization etc., this just more increases the gross investment of device.
Second is to prepare magnesium sulfate, and magnesium sulfate is obtained by the reaction by spent acid and magnesium oxide powder.But due in spent acid
The principal monomer of organic matter containing 10-30%, organic matter is macromolecule alkene, alkadienes, polymer and alkyl sulfonic acid, sulphur
Acid esters etc., in the existing technique for preparing magnesium sulfate, organic matter can not be handled, therefore after above-mentioned reaction treatment, in spent acid
Organic substance residues cause the impurity in magnesium sulfate more in the solid magnesium sulfate prepared, and purity senior general is low, magnesium sulfate color
Jaundice.
Utility model content
Utility model aims to solve the above-mentioned problems in the prior art, it is proposed that a kind of to utilize alkylation
Spent acid prepares the production line of magnesium sulfate, and production cost is low, takes full advantage of alkylation spent acid, and prepare by the production line
Solid sulphuric acid magnesium addition is few, purity is high.
The technical solution of the utility model is：A kind of production line preparing magnesium sulfate using alkylation spent acid, wherein including
Reactor, mixing channel, neutralizing tank, filter press, crystallizing tower, centrifuge and dryer, the outlet of the reactor bottom, which is located at, to be mixed
The surface of slot is closed, the outlet of mixing channel and the import of neutralizing tank connect, and the filter press includes filter press I and filter press II,
The outlet of neutralizing tank is connect with the import of filter press I, and the liquid outlet of filter press I and the inlet of crystallizing tower connect, the centrifugation
The solid outlet of machine and the feed inlet of dryer connect, and the liquid outlet of centrifuge and the inlet of mixing channel connect；
Further include slurrying slot, the solids inlet of slurrying slot is connect with the solid outlet of filter press I, the outlet of slurrying slot and pressure
The import of filter II connects, and the liquid outlet of filter press II is connect with the inlet of slurrying slot, and slurrying slot is equipped with liquid outlet, this goes out liquid
Mouth is connect with the inlet of mixing channel.
Further include mother liquor tank in the utility model, the liquid outlet of the centrifuge and the inlet of mother liquor tank connect, slurrying
The liquid outlet of slot and the inlet of mother liquor tank connect, the inlet connection for going out liquid and mixing channel of mother liquor tank.By mother liquor tank and
Slurrying slot realizes cycle of the liquid in production line.
SO is will produce during reactor reaction2Gas, therefore the utility model further includes absorption tower and circulating slot, cycle
First liquid outlet of slot and the inlet on absorption tower connect, and the second liquid outlet of circulating slot connect with the inlet of slurrying slot, follows
The inlet of annular groove and the liquid outlet on absorption tower connect, and the gas vent of reactor head and the air inlet on absorption tower connect.Both
Absorb SO2Gas, the solution generated, which can be delivered in slurrying slot, cleans solid dregs.
Further include thickener and overflow launder, the solid outlet of thickener bottom is located at the surface of centrifuge, thickener
Import and the outlet of crystallizing tower connect, and the top of thickener is equipped with overflow port, and overflow port is connect with overflow launder, thickener bottom
Liquid outlet is connect with mixing channel or mother liquor tank, and the import of the solid outlet and crystallizing tower of isopipe root connects, on overflow launder
The liquid outlet in portion is connect with mixing channel or mother liquor tank.By the way that thickener and overflow launder is arranged, product that crystallizing tower is obtained into
Row two-stage precipitates, and carries out preliminary separation of solid and liquid, improves the separating effect of solid magnesium sulfate and magnesium sulfate liquid.
The dryer includes Drying, and the outlet of centrifuge and the import of Drying connect, the temperature of Drying entrance
Degree is 85-95 DEG C, and the temperature in Drying exit is 30-40 DEG C.
It is equipped with heating device in the neutralizing tank, the solution temperature in neutralizing tank is made to be not less than 80 DEG C.
It is equipped with heating device in the slurrying slot, the solution temperature in slurrying slot is made to be not less than 75 DEG C.By heated solution,
Prevent magnesium sulfate from crystallizing.
The beneficial effects of the utility model：
(1) waste water generated in alkylation process can fully be digested by the production line and containing the spent acid of organic matter, with
And any waste water generated in other processes production process, 65 tons of alkyl can be digested by often producing 100 tons of solid magnesium sulfates
Change spent acid；
(2) raw material needed for only needs waste water, alkylation spent acid and oxidation enzyme powder, production cost low；
(3) spent acid obtains solid magnesium sulfate by a series of reaction and subsequent processing, and the organic matter in spent acid passes through
Pyroreaction is converted into carbon, and solid magnesium sulfate can be used as Fertilizer application, and the carbon generated after organic matter pyroreaction can be done
Fertilizer or brickmaking will not cause environment any pollution；
(4) in the production line, the organic matter pyroreaction in spent acid is converted into the solid dregs that main component is carbon, leads to
Subsequent processing is crossed, the concentrated sulfuric acid is converted into solid magnesium sulfate, therefore finally obtained solid sulphuric acid magnesium addition is few, purity is high, face
Color is white；
(5) liquid circulates in this production line, will not externally be discharged, therefore the entire production line does not have waste water, exhaust gas
Discharge, both taken full advantage of alkylation spent acid, while having achieved the purpose that energy-saving and emission-reduction.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
In figure：1 reactor；2 neutralizing tanks；3 filter presses I；4 crystallizing towers；5 centrifuges；6 Dryings；7 slurrying slots；8 thickenings
Device；9 overflow launders；10 filter presses；11 circulating slots；12 mixing channels；13 absorption towers；14 mother liquor tanks I；15 mother liquor tanks II；16 mother liquor tanks
Ⅲ。
Specific implementation mode
The utility model is further described with reference to the accompanying drawings and examples.
As shown in Figure 1, it includes reactor that utilization alkylation spent acid described in the utility model, which prepares the production line of magnesium sulfate,
1, mixing channel 12, neutralizing tank 2, filter press, crystallizing tower 4, centrifuge 5, Drying 6 and slurrying slot 7, the outlet of 1 bottom of reactor
Positioned at the surface of mixing channel 12.The inlet of mixing channel 12 is connect by pipeline with mother liquor tank, and the outlet of mixing channel 12 passes through
Pipeline is connect with the entrance of neutralizing tank 2, and the outlet of neutralizing tank 2 is connect by pipeline with filter press.The setting heating in neutralizing tank 2
Device uses steam-heated mode in the present embodiment, and the temperature of solution in neutralizing tank 2 is made to be not less than 80 DEG C.
In the utility model, filter press includes filter press I 3 and filter press II 10, the wherein outlet of neutralizing tank 2 and filter press
I 3 import connects, and two filter presses I 3 are provided in the present embodiment, one or more platforms, quantity master can also be arranged
It to be determined according to actual need of work.It is realized in filter press I 3 after being separated by solid-liquid separation, the liquid outlet of filter press I 3 passes through pipe
Road is connect with the inlet of crystallizing tower 13, the magnesium sulfate of the liquid decrease temperature crystalline in crystallizing tower.The outlet of crystallizing tower 13 passes through pipe
Road is connect with the import at 8 top of thickener, and centrifuge 5 is located at the lower section of thickener 8, and the solid outlet of thickener bottom is located at
The surface of centrifuge 5.The bottom of thickener 8 is additionally provided with liquid outlet, and liquid outlet is connect by pipeline with mother liquor tank I 14.
The top of thickener 8 is equipped with overflow port, and overflow port is connect by pipeline with overflow launder 9, and the top of overflow launder 9 is equipped with
The overflow port of overflow port, overflow launder is connect by pipeline with mother liquor tank I 14, and the bottom of overflow launder 9 is equipped with solid outlet, and solid goes out
Mouth passes through the solids inlet of pipeline and crystallizing tower and connects.By the precipitation twice of thickener 8 and overflow launder 9, solid sulfur is realized
Sour magnesium and Adlerika are sufficiently separated.
The liquid outlet of centrifuge 5 is connect by pipeline with mother liquor tank II 15, and the solid outlet of centrifuge 5 passes through pipeline and baking
The entrance of dry cylinder 6 connects, and is dried to the solid magnesium sulfate for entering Drying 6 by natural gas in the present embodiment, further
The temperature of the moisture gone out in solid magnesium sulfate, Drying inlet is 85-95 DEG C, and the temperature in Drying exit is 30-40
℃.It can be obtained final solid sulphuric acid magnesium products after drying.
Magnesium oxide powder and strong stirring are added in reactor 1, alkylation spent acid, magnesia are added in whipping process
Powder generates the magnesium sulfate of solid with strong sulfuric acid response, and discharges a large amount of heat, so that reactor 1 is in hot environment, temperature
300 DEG C or more can be reached.It is alkylated the organic matter in spent acid at this time by high temperature cabonization, generates solid dregs.It is obtained after reaction
Solid matter directly dropped down onto in mixing channel 12 out of reactor 1, other than solid dregs, other solid matters are molten in mother liquor
Solution, the liquid and solid dregs obtained after dissolving are transported in neutralizing tank 2.In neutralizing tank 2, the pH value of solution is measured, when
When the pH value of solution is less than 7, MgO powder is added into solution, when the pH value of solution being allowed to be more than 7, it is molten that sulfuric acid is added into solution
Liquid, until the pH value of solution is equal to 7；While monitoring solution ph, the density of solution is also detected, ensures sulphur in neutralizing tank
The density of sour magnesium solution is 0.8-1.5kg/m3.After neutralization, all substances in neutralizing tank are discharged into filter press I 3, pressure
Filter I 3, which is realized, to be separated by solid-liquid separation, and the Adlerika obtained after separation is transported in crystallizing tower 4, by solution be cooled to 30 DEG C with
Under, crystallisation by cooling generates magnesium sulfate crystals.It is heavy that solid and liquid after crystallization enter progress two-stage in thickener 8 and overflow launder 8
Behind shallow lake, magnesium sulfate solid is fallen into centrifuge 5, is separated by solid-liquid separation by centrifuge 5, the solid magnesium sulfate obtained after separation into
Enter and dried in Drying 6, magnesium sulfate liquid then enters in mother liquor tank II 15.
Reactor 1 will produce SO during the reaction2Gas, in order to reduce SO2The discharge capacity of gas, meets environmental requirement,
Absorption tower 13 is set at the top of reactor, or gas outlet is set at the top of reactor, gas outlet and absorption tower 13 into
Gas port is connected to.Circulating slot 11 is built-in to have magnesium oxide solution, the first liquid outlet of circulating slot 11 to be connect with the inlet on absorption tower 13,
Second liquid outlet of circulating slot 11 is connect with the inlet of slurrying slot 7, the liquid outlet of the inlet and absorption tower 13 of circulating slot 11
Connection.
Solution circulates between absorption tower 13 and circulating slot 11.In absorption tower 13, magnesium oxide solution absorbs SO2Gas
Body, and Adlerika is produced, Adlerika flows into circulating slot 11, participates in next circulate.Monitoring follows in real time
The pH value of solution in annular groove 11, as long as the pH value of solution is more than 7, ie in solution continues in alkalinity, solution on absorption tower 13 and cycle
It is circulated between slot 11.When the pH value of solution is equal to 7, solution is in neutrality, and solution at this time can not reabsorb SO2Gas
Body, the liquid in circulating slot 11 enters along the second liquid outlet in slurrying slot 7, and new magnesium oxide solution is put into circulating slot.
In the utility model, Adlerika is realized in the entire production line by the way that slurrying slot 7 and mother liquor tank is arranged
Cycle.The outlet of slurrying slot 7 is connect with the import of filter press II 10, and the liquid outlet of filter press II 10 passes through pipeline and slurrying slot
Inlet connects, and slurrying slot 7 is equipped with a liquid outlet, which is connect by pipeline with mother liquor tank III 16.
The solid outlet of filter press I 3 is connect with the solids inlet of slurrying slot, and after the separation of filter press I 3, magnesium sulfate is molten
Liquid stream enters in crystallizing tower 4, and the solid dregs isolated are directly entered in slurrying slot 7.Since solid dregs surface also remaining has sulphur
Sour magnesium, therefore in slurrying slot 7, using in factory waste water or the Adlerika that is flowed out from circulating slot 11 to solid slag
Dregs cleans, and all substances after cleaning enter in filter press II 10, by the separation of solid and liquid of filter press II 10, after cleaning
Solid dregs and Adlerika separation, the solid dregs after separation are discharged, and can be used as fertilizer or brick-making raw material.Point
The Adlerika obtained from after goes successively to clean solid dregs in slurrying slot 7, makes Adlerika in slurrying slot 7 and press filtration
It is circulated between machine II 10, until Adlerika reaches certain concentration, Adlerika can not clean solid slag at this time
The magnesium sulfate on dregs surface.At this point, Adlerika is flow to from the liquid outlet of slurrying slot in mother liquor tank III 16.In the utility model,
The liquid outlet of mother liquor tank I 14, mother liquor tank II 15 and mother liquor tank III 16 is connect by pipeline with the inlet of mixing channel 12, mother liquor
Magnesium sulfate liquid in slot enters as mother liquor in mixing channel, for dissolving the substance after reacting.
In conclusion in the entire production line described in the utility model, required raw material is MgO powder, alkylation
Spent acid and water, water therein can utilize the waste water that factory generates in process of production.In entire production process, finally obtain
Product be solid dregs and the very high solid magnesium sulfate of mass percent concentration that main component is carbon, solid dregs can
Using as fertilizer or brick-making raw material, and solid magnesium sulfate can then be used as Fertilizer application.In the slurrying slot 7 or circulating slot 11
Interior continuous moisturizing to ensure the normal operation of the entire production line, and realizes liquid by setting mother liquor tank and is entirely producing
Recycling in line had both been sufficiently used alkylation spent acid, while will not also be to environment without the discharge of waste water, exhaust gas
It pollutes, has achieved the purpose that energy-saving and emission-reduction.
Claims (7)
1. a kind of production line preparing magnesium sulfate using alkylation spent acid, it is characterised in that：Including reactor, mixing channel, neutralization
Tank, filter press, crystallizing tower, centrifuge and dryer, the outlet of the reactor bottom is positioned at the surface of mixing channel, mixing channel
Outlet and the import of neutralizing tank connect, the filter press includes filter press I and filter press II, the outlet of neutralizing tank and filter press
I import connection, the liquid outlet of filter press I and the inlet of crystallizing tower connect, the solid outlet and dryer of the centrifuge
Feed inlet connection, the inlet of the liquid outlet of centrifuge and mixing channel connects；
Further include slurrying slot, the solids inlet of slurrying slot is connect with the solid outlet of filter press I, the outlet of slurrying slot and filter press
II import connection, the liquid outlet of filter press II connect with the inlet of slurrying slot, slurrying slot equipped with liquid outlet, the liquid outlet and
The inlet of mixing channel connects.
2. the production line according to claim 1 for preparing magnesium sulfate using alkylation spent acid, it is characterised in that：Further include mother
Liquid bath, the liquid outlet of the centrifuge and the inlet of mother liquor tank connect, the liquid outlet of filter press II and the inlet of mother liquor tank
Connection, the outlet of mother liquor tank and the inlet of mixing channel connect.
3. the production line according to claim 1 for preparing magnesium sulfate using alkylation spent acid, it is characterised in that：Further include inhaling
Tower and circulating slot are received, the first liquid outlet of circulating slot and the inlet on absorption tower connect, the second liquid outlet and slurrying of circulating slot
The inlet of slot connects, and the inlet of circulating slot and the liquid outlet on absorption tower connect, the gas vent of reactor head and absorption
The air inlet of tower connects.
4. the production line according to claim 1 for preparing magnesium sulfate using alkylation spent acid, it is characterised in that：Further include increasing
Thick device and overflow launder, the solid outlet of thickener bottom are located at the surface of centrifuge, the import of thickener and going out for crystallizing tower
Mouthful connection, the top of thickener are equipped with overflow port, and overflow port is connect with overflow launder, the liquid outlet and mixing channel of thickener bottom or
Person's mother liquor tank connects, and the import of the solid outlet of isopipe root and crystallizing tower connects, the liquid outlet on overflow launder top with mix
Slot or mother liquor tank connection.
5. the production line according to claim 1 for preparing magnesium sulfate using alkylation spent acid, it is characterised in that：The drying
Machine includes Drying, and the outlet of centrifuge and the import of Drying connect, and the temperature of Drying entrance is 85-95 DEG C, drying
The temperature in cylinder exit is 30-40 DEG C.
6. the production line according to claim 1 for preparing magnesium sulfate using alkylation spent acid, it is characterised in that：The neutralization
It is equipped with heating device in tank, the solution temperature in neutralizing tank is made to be not less than 80 DEG C.
7. the production line according to claim 1 for preparing magnesium sulfate using alkylation spent acid, it is characterised in that：The slurrying
It is equipped with heating device in slot, the solution temperature in slurrying slot is made to be not less than 75 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721737961.6U CN207748858U (en) | 2017-12-13 | 2017-12-13 | The production line of magnesium sulfate is prepared using alkylation spent acid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721737961.6U CN207748858U (en) | 2017-12-13 | 2017-12-13 | The production line of magnesium sulfate is prepared using alkylation spent acid |
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| CN207748858U true CN207748858U (en) | 2018-08-21 |
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ID=63148395
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107827130A (en) * | 2017-12-13 | 2018-03-23 | 青岛锐丰源化工有限公司 | Utilize the production line for being alkylated spent acid and preparing magnesium sulfate |
| CN110963510A (en) * | 2020-01-13 | 2020-04-07 | 山东齐创石化工程有限公司 | Recovery processing device and process for waste sulfuric acid |
-
2017
- 2017-12-13 CN CN201721737961.6U patent/CN207748858U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107827130A (en) * | 2017-12-13 | 2018-03-23 | 青岛锐丰源化工有限公司 | Utilize the production line for being alkylated spent acid and preparing magnesium sulfate |
| CN107827130B (en) * | 2017-12-13 | 2024-04-02 | 青岛锐丰源化工有限公司 | Production line for preparing magnesium sulfate by using alkylated waste acid |
| CN110963510A (en) * | 2020-01-13 | 2020-04-07 | 山东齐创石化工程有限公司 | Recovery processing device and process for waste sulfuric acid |
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