CN102603433B - Device and method for zero emission preparation of aqueous oxidizer salt solution - Google Patents
Device and method for zero emission preparation of aqueous oxidizer salt solution Download PDFInfo
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- CN102603433B CN102603433B CN201110319585.XA CN201110319585A CN102603433B CN 102603433 B CN102603433 B CN 102603433B CN 201110319585 A CN201110319585 A CN 201110319585A CN 102603433 B CN102603433 B CN 102603433B
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Abstract
The invention relates to a device and a method for the zero emission preparation of an aqueous oxidizer salt solution. The device of the invention concretely comprises a preparation tank, a coarse filter tank, a fine filter tank, a water tank, a wastewater concentration precipitation tank, a recovered water filter and a recovered water tank, recovered water which is filtered by the recovered water filter is injected to the recovered water tank by the lower space under the filter screen in the recovered water filter through a pipeline, and the recovered water in the recovered water tank is injected to the preparation tank through a pipeline. The invention also relates to the method for preparing the aqueous oxidizer salt solution through using the device. Advantages of the device and the method of the invention are shown in the specification.
Description
Technical field
The present invention relates to emulsion explosive manufacturing technology field, relate in particular to a kind of apparatus and method of the zero release preparation oxidizer salt aqueous solution, the described oxidizer salt aqueous solution can be used for preparing emulsion explosive.
Background technology
The main raw material(s) containing as the oxidizer salt aqueous solution of preparing emulsion explosive is the nitrate oxidizer such as ammonium nitrate, SODIUMNITRATE, soluble in water, there is corrodibility, thereby equipment, pipeline, valve, the test set manufactured all adopt the corrosion-resistant materials such as stainless steel to make.The starting material that are inevitably scattered in oxidizer salt aqueous solution manufacturing processed, part is scattered starting material owing to having sneaked into impurity, can not recycle, and must clean ground for water, produces waste water.In addition, the oxidizer salt aqueous solution is crystallization and freezing very easily, blocking pipe, and device interior very easily crystallization solidifies, thereby the necessary routine cleaning of equipment and pipeline inside and outside, produces a large amount of waste water.
Domestic industrial emulsion explosive production line key point when prepared by the oxidizer salt aqueous solution has been placed in raw-material input amount, due to the quality property of there are differences of starting material own, the oxidizer salt aqueous solution by this manufacture seems qualified, inner quality is widely different in fact, reason due to process control, cause the waste water of all manufacturing processedes to be all discharged into occurring in nature, serious environment pollution also causes water resource waste, the active substances such as oxidizer salt is wasted in the lump simultaneously.Current domestic technology does not also have to pay attention to the degree that must recycle trade effluent, and waste water is directly discharge after producing, and because not containing heavily contaminated material, country does not force control yet.People also do not grasp at present completely or focus does not focus in the recycling of controlling oxidizer salt aqueous solution manufacture generation waste water; The manufacturing processed of the oxidizer salt aqueous solution is not carried out to parameter control, cause the oxidizer salt aqueous solution unbalanced.
In general, while preparing at present the oxidizer salt aqueous solution, the water that contains oxidizer salt directly discharges, and in the time of waste water resource, has wasted the active substances such as oxidizer salt; And in existing method, do not control in oxidizer salt aqueous solution manufacturing processed pH value, opacity, crystallization point, the unified control techniques of temperature.
Therefore, device for formulating and the compound method of the new oxidizer salt aqueous solution still expected to have in this area, particularly expects to have the apparatus and method that can effectively remove impurity and the zero release preparation oxidizer salt aqueous solution.
Summary of the invention
The object of the present invention is to provide a kind of device for formulating of the oxidizer salt aqueous solution of novelty, by this device for formulating, can effectively reduce oxidizer salt to the discharge in environment, and can obtain effective impurity-eliminating effect.Another object of the present invention is to prepare with this device for formulating the method for the oxidizer salt aqueous solution.The oxidizer salt that in production plant, be particularly scattered in ground is reclaimed for preparing the oxidizer salt aqueous solution, make whole production process reach the effect of zero release.。
For this reason, first aspect present invention provides a kind of device for formulating of the oxidizer salt aqueous solution, and it comprises:
Preparation tank, is wherein provided with agitator;
Coarse filtration tank, is wherein provided with coarse strainer, and the upper space of coarse strainer is connected to the bottom opening of described preparation tank by the first pipeline;
Secondary filter, is provided with at least one essence filter body in it, the bottom of this essence filter body is connected to the lower space of coarse strainer in described coarse filtration tank by second pipe, and the top of essence filter body communicates with described preparation tank by the 3rd pipeline;
Water pot, it communicates with described preparation tank by the 4th pipeline;
Waste Water Centralized settling tank, it is arranged at below the horizontal plane of described device for formulating, and the waste water producing in process of production for collecting described device for formulating;
Recycle-water strainer, is wherein provided with filter screen, and the upper space of filter screen is connected to below the liquid level of described Waste Water Centralized settling tank by pipeline; With
Reclaim water pot, in described recycle-water strainer, the lower space of filter screen can be injected into filtered recycle-water in recycle-water strainer in this recovery water pot by pipeline, and this recovery water pot can be injected into recycle-water wherein in preparation tank by pipeline.
According to the device for formulating of first aspect present invention, in wherein said the 4th pipeline, be provided with the 4th T-valve, the 5th pipeline of being drawn by the 4th T-valve is connected to the upper space of coarse strainer in described coarse filtration tank.
Second aspect present invention provides the compound method of the oxidizer salt aqueous solution, and it comprises the following steps:
(i) by opening for feed, in preparation tank, add oxygenant calculated amount, broken; From water pot via the 4th pipeline to the water that adds calculated amount preparation tank, and/or from reclaim water pot via pipeline to the recovery salt and the water that add calculated amount preparation tank, make the material in preparation tank reach the concentration needing; Under 85-102 ℃ of (preferably 85-95 ℃) heating, stir and make material dissolution, measure pH value and crystallization point, be adjusted to if desired pH value and crystallization point qualified;
(ii) in preparation tank, add diatomite, continue to stir;
(iii) make material in preparation tank enter the upper space of the coarse strainer in coarse filtration tank through the first pipeline, under the effect of in-line pump suction filtration, material enters the lower space of coarse strainer by coarse strainer, and material is further forwarded to secondary filter via second pipe;
(iv) material, through the essence filter body filteration of secondary filter, enters the 3rd pipeline, and the stepping of going forward side by side enters preparation tank;
(v) optionally, make step (iii) and (iv) circulation, until the opacity of solution is up to specification;
(vi) open the first T-valve, make to process the qualified oxidizer salt aqueous solution and import solution discharge port, complete preparation process,
Wherein, the recovery salt in described recovery water pot and water are that Waste Water Centralized settling tank by being arranged at below the horizontal plane of device for formulating is collected and obtains through recycle-water strainer filtration treatment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment of the device for formulating of the oxidizer salt aqueous solution according to the present invention.
Fig. 2 and Fig. 3 are respectively the local schematic flow sheets of an embodiment of the compound method of the oxidizer salt aqueous solution according to the present invention.
In the present invention, the main Reference numeral of use is as follows:
The upper space 52 of filter screen in preparation tank 1 recycle-water strainer
The lower space 53 of filter screen in agitator 11 recycle-water strainers
Bottom opening 12 pipelines 54 of preparation tank
Zone of heating 13 recycle-water pipeline pumps 55
Fire proof motor 14 reclaims water pot 6
Opening for feed 15 pipelines 61
Coarse filtration tank 2 Waste Water Centralized settling tanks 7
Coarse strainer 21 coarse strainers 71
Upper space 22 pipelines 72 of coarse strainer
The lower space 23 of coarse strainer is received water filter blow-off pipe 73
Clamp flange handle 24 first pipelines 81
Sewage draining exit 25 first T-valve 811
Secondary filter 3 solution discharge ports 812
Essence filter body 31 second pipes 82
Water pot 4 in-line pumps 821
Recycle-water strainer 5 the 3rd pipeline 83
Recycle-water strainer screen 51 the 4th pipeline 84
The 4th T-valve 841
The 5th pipeline 85
Embodiment
Mode below in conjunction with accompanying drawing with example is further described to various aspects of the present invention.
Referring to Fig. 1, wherein described according to the schematic diagram of an embodiment of the device for formulating of the first aspect present invention oxidizer salt aqueous solution.The device for formulating of the oxidizer salt aqueous solution of the present invention comprises:
Preparation tank 1, is wherein provided with agitator 11;
Coarse filtration tank 2, is wherein provided with coarse strainer 21, and the upper space 22 of coarse strainer is connected to the bottom opening 12 of described preparation tank 1 by the first pipeline 81;
Secondary filter 3, is provided with at least one essence filter body 31 in it, the bottom of this essence filter body is connected to the lower space 23 of coarse strainer in described coarse filtration tank by second pipe 82, and the top of essence filter body communicates with described preparation tank 1 by the 3rd pipeline 83;
Water pot 4, it communicates with described preparation tank 1 by the 4th pipeline 84;
Waste Water Centralized settling tank 7, it is arranged at below the horizontal plane of described device for formulating, and the waste water (be that described Waste Water Centralized settling tank 7 is to design at the low-lying place on production plant ground, in workshop, ground is to this low-lying place inclined design) producing in process of production for collecting described device for formulating;
Recycle-water strainer 5, is wherein provided with filter screen 51, and the upper space 52 of filter screen is connected to below the liquid level of described Waste Water Centralized settling tank by pipeline 72; With
Reclaim water pot 6, in described recycle-water strainer 5, the lower space 53 of filter screen can be injected into filtered recycle-water in recycle-water strainer 5 in this recovery water pot 6 by pipeline 54, and this recovery water pot 6 can be injected into recycle-water wherein in preparation tank 1 by pipeline 61.
According to the device for formulating of first aspect present invention, in wherein said the 4th pipeline 84, be provided with the 4th T-valve 841, the 5th pipeline 85 of being drawn by the 4th T-valve 841 is connected to the upper space 22 of coarse strainer in described coarse filtration tank.Being provided with of the 5th pipeline 85 is beneficial to system operation, and particularly they are very useful when each parts of cleaning system, yet those skilled in the art understand and do not use the 5th pipeline 85 can also realize the cleaning of each parts of device for formulating of the present invention.
According to the device for formulating of first aspect present invention, the tank body of wherein said preparation tank 1 comprises zone of heating 13.Be the usually said heating jackets of people, heating medium for example hot water circulates and makes the liquid heat in preparation tank in this chuck.In one embodiment, preparation tank, coarse filtration tank, secondary filter and various transport pipe are provided with independently of one another the tank body that is similar to preparation tank 1 and comprise the thermal insulation layer of zone of heating 13 or the thermal insulation layer of other type.
According to the device for formulating of first aspect present invention, the agitator 11 arranging in wherein said preparation tank 1 is driven by fire proof motor 14.
According to the device for formulating of first aspect present invention, the top of wherein said preparation tank 1 is provided with opening for feed 15.Material can join in preparation tank 1 through this opening for feed 15 such as ammonium nitrate, SODIUMNITRATE etc.
According to the device for formulating of first aspect present invention, wherein said the 3rd pipeline 83 and/or the 4th pipeline 84 are communicated with top or the tank skin top of described preparation tank 1.
According to the device for formulating of first aspect present invention, in wherein said the first pipeline 81, be provided with the first T-valve 811, by this first T-valve 811, draw solution discharge port 812.
According to the device for formulating of first aspect present invention, wherein said the first pipeline 81 together with the downstream of the first T-valve 811 is converged with described the 5th pipeline 85, be connected to described coarse filtration tank in the upper space 22 of coarse strainer.
According to the device for formulating of first aspect present invention, wherein said coarse strainer 21 is to hold back diatomaceous filter screen.
According to the device for formulating of first aspect present invention, wherein said coarse filtration tank 2 tops are provided with clamp flange handle 24.This clamp flange handle 24 can make this coarse filtration tank 2 open or sealing, thereby makes in working order whole coarse filtration tank 2 sealings, and can open this clamp flange handle 24 after having worked, and can clean coarse strainer 21 and/or coarse filtration tank 2.
According to the device for formulating of first aspect present invention, wherein said coarse filtration tank 2 bottoms are provided with sewage draining exit 25.The dirt that is deposited on coarse filtration tank 2 bottoms after work completes can be discharged from this sewage draining exit 25.
According to the device for formulating of first aspect present invention, on wherein said second pipe 82, be provided with in-line pump 821.In-line pump 821 can drive working liquid circulation in device for formulating of the present invention.
According to the device for formulating of first aspect present invention, the filler in wherein said essence filter body 31 is diatomite.The two ends that it will be appreciated by those skilled in the art that described essence filter body 31 can arrange micropore pad (not shown), this micropore pad can allow solution by but can not make diatomite particle pass through.When described essence filter body 31 has two or more, they can be to combine in mode in parallel or series connection; Compare with parallel combination, series combination will contribute to obtain the better oxidizer salt aqueous solution of impurity-eliminating effect, but filtration velocity is slower.
According to the device for formulating of first aspect present invention, for operational convenience, can also in each pipeline, valve be set, for example can be at the first pipeline 81 and the forward and backward valve that arranges independently of one another of the 5th pipeline 85 points; For example can also valve be set in upstream or the downstream of in-line pump 821 again.Being provided with of these valves helps make whole operating procedure to carry out continuously and when breaking down, is convenient to hang up.
According to the device for formulating of first aspect present invention, described coarse strainer 21 can be to be horizontally placed in described strainer, thus the internal space of strainer is separated into upper and lower two portions, i.e. upper space 22 and lower space 23.Those skilled in the art understand, coarse strainer 21 can be to be vertically installed in described strainer, upstream, downstream two portions of thus the internal space of strainer being separated into liquid material, these upstream and downstream two portions can be called upper space 22 and lower space 23.For the present invention, to be horizontally disposed be preferred to coarse strainer 21.
According to the device for formulating of first aspect present invention, described Waste Water Centralized settling tank 7 is arranged at the whole device for formulating of the present invention and (includes but not limited to preparation tank 1, coarse filtration tank 2, secondary filter 3, water pot 4, recycle-water strainer 5 and reclaim water pot 6, and all tubing systems) below horizontal plane, and for collecting the waste water that described device for formulating produces in process of production (these waste water comprise do not wish the oxidizer salt that can recycle that discharges in environment).Thus, no matter be the material that loses in production process (comprise in these materials do not wish discharge the oxidizer salt that can recycle) in environment, or the waste water producing for cleaning equipment or ground (comprise in these waste water do not wish discharge in environment the oxidizer salt that can recycle), all can collect by this Waste Water Centralized settling tank 7.
According to the device for formulating of first aspect present invention, wherein connect in the lower space 53 of filter screen in recycle-water strainer 5 and the pipeline 54 of recovery water pot 6 recycle-water pipeline pump 55 can be set.By the suction function of this recycle-water pipeline pump 55, the lower space 53 of filter screen in recycle-water strainer 5 can be evacuated, then make waste water in Waste Water Centralized settling tank 7 by the upper space 52 of filter screen in pipeline 72 suction recycle-water strainers 5, by filter screen 51 and finally reach and reclaim water pot 6.
According to the device for formulating of first aspect present invention, be wherein communicated with the upper space 52 of filter screen in recycle-water strainer and the pipeline 72 between Waste Water Centralized settling tank 7, in the bottom of this pipeline 72, be provided with a coarse strainer 71.This coarse strainer can avoid Waste Water Centralized settling tank 7 to suck recycle-water strainer 5.
According to the device for formulating of first aspect present invention, wherein in recycle-water strainer 5, the bottom of the lower space 53 of filter screen is provided with an opening, and this opening for example, is communicated to Waste Water Centralized settling tank 7 by recycle-water strainer blow-off pipe 73 that can opened/closed (controlling by valve).Thus, in recycle-water strainer 5, the throw out (if present) of lower space 53 depositions of filter screen can be discharged by this outlet.
According to the device for formulating of first aspect present invention, wherein secondary filter 3, water pot 4 and recovery water pot 6 threes can arrange sewage draining exit in its bottom independently of one another, for example, be similar to the sewage draining exit 25 of coarse filtration tank 2 bottoms, so that technological operation or cleaning.
Again referring to Fig. 2 and Fig. 3, wherein described according to the schematic flow sheet of an embodiment of the compound method of the second aspect present invention oxidizer salt aqueous solution, Fig. 2 has mainly described to use apparatus of the present invention and method to carry out a part of process that coarse filtration/essence filters out impurities, and Fig. 3 has mainly described a part of process of using apparatus of the present invention and method to reclaim oxidizer salt and reducing oxidizer salt discharge.The recovery liquid that shown in Fig. 3, process obtains is after measured after oxidizer salt content wherein, can join as calculated shown in Fig. 2 in preparation process, as the solvent of preparing that is added with oxidizer salt, can reduce thus the starting material such as ammonium nitrate used in the preparation of flow process shown in the independent use Fig. 2 oxidizer salt aqueous solution of the present invention, SODIUMNITRATE.
In one embodiment, described compound method comprises the following steps:
(i) by opening for feed 15, in preparation tank 1, add oxygenant calculated amount, broken; From water pot 4 via the 4th pipeline 84 to the water that adds calculated amount preparation tank 1, and/or from reclaim water pot 6 via pipeline 61 to the recovery salt and the water that add calculated amount preparation tank 1, make the material in preparation tank 1 reach the concentration needing; Under 85-102 ℃ of (preferably 85-95 ℃) heating, stir and make material dissolution, measure pH value and crystallization point, be adjusted to if desired pH value and crystallization point qualified;
(ii) in preparation tank 1, add diatomite, continue to stir;
(iii) make material in preparation tank 1 enter the upper space 22 of the coarse strainer in coarse filtration tank 2 through the first pipeline 81, under in-line pump 821 suction filtration effects, material enters the lower space 23 of coarse strainer by coarse strainer 21, and material is further forwarded to secondary filter 3 via second pipe 82;
(iv) material, through essence filter body 31 filteration of secondary filter 3, enters the 3rd pipeline 83, and the stepping of going forward side by side enters preparation tank 1;
(v) optionally, make step (iii) and (iv) circulation, until the opacity of solution is up to specification;
(vi) open the first T-valve 811, make to process the qualified oxidizer salt aqueous solution and import solution discharge port 812, complete preparation process,
Wherein, the recovery salt in described recovery water pot 6 and water are that Waste Water Centralized settling tank 7 by being arranged at below the horizontal plane of device for formulating is collected and obtains through recycle-water strainer 5 filtration treatment.
The oxidizer salt aqueous solution that gained of the present invention is qualified can be directly used in follow-up emulsification process or temporary by appropriate vessel after for follow-up emulsification process.
According to the compound method of second aspect present invention, wherein, in step (i), preparing water can be the pure water in water pot 4, can also be to reclaim the recycle-water that contains oxidizer salt in water pot 6, and can also be the mixture of the two.When using recycle-water, can first to the kind of various oxidizer salts in recycle-water and content, measure, and when preparation feeds intake, reduce these and be present in the oxidizer salt in recycle-water.
According to the compound method of second aspect present invention, wherein in step (i) before and/or in step (vi) afterwards, also comprise the step that device for formulating is cleaned.These cleaning steps can use valve and other associated components in pipeline, for example, in cleaning process, can open the 4th T-valve 841 and make the water in water pot 4 directly introduce in strainer; For example can open again the clamp flange handle 24 of strainer 2, so that coarse strainer 21 and strainer 2 are cleaned.
According to the compound method of second aspect present invention, in the working cycle of step (v), if the lower space 23 of coarse strainer has obvious settling in coarse filtration tank, can in operating process, by sewage draining exit 25, this settling be discharged.Thus, the lower space 23 of second pipe 82 coarse strainer from coarse filtration tank is drawn, and outlet is not preferably arranged on the bottom of strainer, and sewage draining exit 25 is preferably arranged on the bottommost of the bottom of strainer.
According to the method for second aspect present invention, by Waste Water Centralized settling tank 7, collect the waste water that described device for formulating produces in process of production (comprise in these waste water do not wish discharge the oxidizer salt that can recycle) in environment.Thus, no matter be the material that loses in production process (comprise in these materials do not wish discharge the oxidizer salt that can recycle) in environment, or the waste water producing for cleaning equipment or ground (comprise in these waste water do not wish discharge in environment the oxidizer salt that can recycle), all can collect by this Waste Water Centralized settling tank 7.
According to the method for second aspect present invention, in connecting recycle-water strainer 5, in the lower space 53 of filter screen and the pipeline 54 of recovery water pot 6, be provided with recycle-water pipeline pump 55.By the suction function of this recycle-water pipeline pump 55, the lower space 53 of filter screen in recycle-water strainer 5 can be evacuated, then make waste water in Waste Water Centralized settling tank 7 by the upper space 52 of filter screen in pipeline 72 suction recycle-water strainers 5, by filter screen 51 and finally reach and reclaim water pot 6.
According to the method for second aspect present invention, be wherein communicated with the upper space 52 of filter screen in recycle-water strainer and the pipeline 72 between Waste Water Centralized settling tank 7, in the bottom of this pipeline 72, be provided with a coarse strainer 71.Waste water in Waste Water Centralized settling tank 7 has been done in advance to filter entering this coarse strainer 71 of the front process of recycle-water strainer 5, thereby can alleviate the working load of recycle-water strainer 5.
According to the method for second aspect present invention, wherein in recycle-water strainer 5, the bottom of the lower space 53 of filter screen is provided with an opening, and this opening for example, is communicated to Waste Water Centralized settling tank 7 by recycle-water strainer blow-off pipe 73 that can opened/closed (controlling by valve).Thus, in needs, by this outlet, the throw out of recycle-water filter bottom deposition can be discharged.
According to the compound method of second aspect present invention, it can be carried out by arbitrary embodiment of device for formulating described in first aspect present invention, in other words, the arbitrary embodiment of first aspect present invention is all applicable to the compound method of second aspect present invention (those skilled in the art understand and can carry out suitably adjusting to adapt to the method for second aspect to these embodiments of first aspect).
Generally speaking, problem to be solved by this invention is by Waste Water Centralized all in production process, by purifying treatment, removes visible impurity, concentrates in metering water pot, and the water solvent while manufacturing as the oxidizer salt aqueous solution, recycles.Those skilled in the art know, and owing to containing oxidizer salt more or less in the water of recycling, according to formula, feed intake and must cause component proportions gap, make oxidizer salt aqueous solution quality unbalanced, finally affect explosive quality, by control process parameter, control terminal quality.Variation at the aspects such as size of the sneaking into of impurity, raw-material variation, moisture content all may directly affect proportioning, causes proportioning unbalance.The present invention's expectation is carried out impurity absorption, coarse filtration, essence filter to oxidizer salt aqueous solution manufacturing processed, to reach the object of purity.Another object of the present invention is by pH value, crystallization point, temperature, opacity in control oxidizer salt aqueous solution manufacturing processed, to carry out the constant quality of stable, aqueous solution.
According to the present invention, the main raw material(s) that the described oxidizer salt aqueous solution contains is the nitrate oxidizer such as ammonium nitrate, SODIUMNITRATE, and they are soluble in water, typically have corrodibility.
According to the present invention, in oxidizer salt aqueous solution manufacturing processed, carry out impurity absorption, coarse filtration, essence filter, circulation suction filtration, can effectively reach the object of purifying.
According to the present invention, the final quality index of the oxidizer salt aqueous solution can by detect opacity, pH value, crystallization point even temperature weigh the quality of the gained oxidizer salt aqueous solution.
According to the present invention, opacity is to weigh the topmost index of oxidizer salt aqueous solution quality, after the filter of coarse filtration essence, detects opacity, too high, continues suction filtration, until qualified.According to the present invention, the oxidizer salt aqueous solution is measured opacity after the filter of coarse filtration essence, and the preferred opacity of the oxidizer salt aqueous solution finally obtaining is less than 3NTU, is more preferably less than 2NTU, is more preferably less than 1NTU;
According to the present invention, diatomite must be the product that meets GB, and the diatomite adding in secondary filter needs periodic replacement, and general 30 batches of replacings can contribute to the preparation of the oxidizer salt aqueous solution.
In an embodiment of the present invention, basic craft course is: in oxidizer salt aqueous solution preparation tank, add the water through metering, the oxidizer salt such as ammonium nitrate, SODIUMNITRATE joins in preparation tank after measuring fragmentation, utilize circulating hot water to be heated to the temperature of regulation, normally between 85-102 degree Celsius, measure temperature, measuring and adjusting pH value, detects crystallization point, adds diatomite by the mode of suction filtration when qualified, through strainer, secondary filter, filter, circulate 30 minutes, detect opacity, when opacity is qualified, stop suction filtration, be pumped to batch tank standby.
According to the present invention, to preparation tank 1, adding diatomaceous amount is that those skilled in the art easily determine according to existing knowledge, for example 0.1～0.5% (w/v) of liquid material amount in diatomaceous preparation tank 1, preferably 0.1～0.4% (w/v), preferably 0.1～0.3% (w/v).
According to the present invention, each T-valve can be the T-valve of electronic commutation pattern, also can be described as in the present invention electronic commutation valve.
In one embodiment of the invention, in described device for formulating, the parts such as preparation tank, strainer and conveying pipeline are provided with hot water thermal insulating layer (being heating medium interlayer) independently of one another.
According to the present invention, after day end-of-job, in preparation tank, make the oxidizer salt aqueous solution and be transferred to conservation tank or finished using, switch the electronic commutation valve of water pot, use clear water flushing pipe, rinse water is entered to preparation tank.
According to the present invention, after pipeline cleaning finishes, open strainer blind flange, remove the impurity filtering out; Open secondary filter blind flange, whether normally check, and regularly replace fine filtering device.
According to apparatus and method of the present invention, can recycle waste water, reclaim the useful components such as ammonium nitrate that contain in waste water simultaneously.
According to the processing step of one embodiment of the invention, be: the waste water of all generations is left to pond for recovering naturally, carry out elementary precipitation, primary filter, with water pump, through single filter (if desired through cascade filtration), be pumped into and reclaim in water pot, to the waste water that reclaims water pot by batch joining in preparation tank, with this as solvent, by processing requirement, add the oxidizer salts such as ammonium nitrate, SODIUMNITRATE, heating for dissolving, while reaching certain temperature, carry out pH value, opacity, temperature, crystallization point mensuration, debugging agent adjustment criteria index by acid or alkali, reaches standard-required and is as the criterion.
According to apparatus and method of the present invention, the processing set-up of factory building need to design the water storage tank (being Waste Water Centralized settling tank of the present invention) of indentation at the k level level attitude of factory building, the trade effluent producing in all production processes is all focused in water storage tank.
According to apparatus and method of the present invention, can test crystallization point.In one embodiment, measure crystallization point, rule of thumb, crystallization point is often lower than standard 1 degree, be equivalent to solution per ton and add 3.3kg water, according to total solution tonnage and the crystallization point number of degrees that need adjust, calculate the water yield of adding, then by formula calculation, go out the amount of the ammonium nitrate that need add.Often higher than standard once, by adding about 3kg water in solution per ton, can reduce crystallization point 1 degree.
According to apparatus and method of the present invention, can test the test of pH value.In one embodiment, pH value determination, can add acetic acid if be greater than 4.0, if be less than 3.5, can add sodium carbonate; In solution per ton, add 10g sodium carbonate, pH value can improve 0.01 unit; In solution per ton, add 0.1kg acetic acid, p H value can reduce 0.1Ge unit.According to the apparatus and method of the application's case, wherein available process control parameter for example comprises 69 ℃-71 ℃ of pH value 3.5-4.0, solution turbidity < 1NTU and/or crystallization points, is the preferred aqueous solution in these parameter areas.
The waste water reclamation that the invention solves the generation of oxidizer salt aqueous solution manufacturing processed utilizes problem, the active substances such as the nitrate containing in waste water are recycled simultaneously, by the unified of processing parameter in process control controlled, guaranteed the quality balance of the oxidizer salt aqueous solution.
Although described the present invention and advantage thereof in detail, be to be understood that in the situation that do not exceed the spirit and scope of the present invention that limited by appended claim and can carry out various changes, alternative and conversion.And scope of the present invention is not limited only to the specific embodiment of the described process of specification sheets, equipment, means, method and step.One of ordinary skilled in the art will readily appreciate that from disclosure of the present invention, according to the present invention, can use carry out with in this fast essentially identical function of corresponding embodiment or obtain process, equipment, means, method or step result essentially identical with it, that existing and will be developed future.Therefore, appended claim is intended to comprise such process, equipment, means, method or step in their scope.
Claims (13)
1. the device for formulating of the oxidizer salt aqueous solution, is characterized in that comprising:
Preparation tank, is wherein provided with agitator;
Coarse filtration tank, is wherein provided with coarse strainer, and the upper space of coarse strainer is connected to the bottom opening of described preparation tank by the first pipeline;
Secondary filter, is provided with at least one essence filter body in it, the bottom of this essence filter body is connected to the lower space of coarse strainer in described coarse filtration tank by second pipe, and the top of essence filter body communicates with described preparation tank by the 3rd pipeline;
Water pot, it communicates with described preparation tank by the 4th pipeline;
Waste Water Centralized settling tank, it is arranged at below the horizontal plane of described device for formulating, and the waste water producing in process of production for collecting described device for formulating;
Recycle-water strainer, is wherein provided with filter screen, and the upper space of filter screen is connected to below the liquid level of described Waste Water Centralized settling tank by pipeline; With
Reclaim water pot, in described recycle-water strainer, the lower space of filter screen can be injected into filtered recycle-water in recycle-water strainer in this recovery water pot by pipeline, and this recovery water pot can be injected into recycle-water wherein in preparation tank by pipeline,
Wherein, in described the 4th pipeline, be provided with the 4th T-valve, the 5th pipeline of being drawn by the 4th T-valve is connected to the upper space of coarse strainer in described coarse filtration tank.
2. according to the device for formulating of claim 1, it is characterized in that described preparation tank, coarse filtration tank, secondary filter, pipeline arrange moisturizing layer independently of one another.
3. according to the device for formulating of claim 1, it is characterized in that the agitator arranging in described preparation tank is driven by fire proof motor.
4. according to the device for formulating of claim 1, it is characterized in that described the 3rd pipeline and/or the 4th pipeline are communicated with top or the tank skin top of described preparation tank.
5. according to the device for formulating of claim 1, it is characterized in that being provided with the first T-valve in described the first pipeline, by this first T-valve, draw solution discharge port.
6. according to the device for formulating of claim 1, it is characterized in that described the first pipeline together with the downstream of the first T-valve is converged with described the 5th pipeline, be connected to described coarse filtration tank in the upper space of coarse strainer.
7. according to the device for formulating of claim 1, it is characterized in that described coarse filtration pot bottom is provided with sewage draining exit.
8. according to the device for formulating of claim 1, it is characterized in that being provided with in-line pump on described second pipe.
9. according to the device for formulating of claim 1, it is characterized in that the filler in described essence filter body is diatomite.
10. according to the device for formulating of claim 1, it is characterized in that described Waste Water Centralized settling tank is arranged at below the horizontal plane on ground of whole device for formulating, and the waste water producing in process of production for collecting described device for formulating.
11. according to the device for formulating of claim 1, it is characterized in that connecting in the lower space of filter screen in recycle-water strainer and the pipeline of recovery water pot recycle-water pipeline pump is set.
12. according to the device for formulating of claim 1, it is characterized in that being communicated with the upper space of filter screen in recycle-water strainer and the pipeline between Waste Water Centralized settling tank, in the bottom of this pipeline, is provided with a coarse strainer.
The compound method of the 13. oxidizer salt aqueous solution, is characterized in that comprising the following steps:
(i) by opening for feed, in preparation tank, add oxygenant calculated amount, broken; From water pot via the 4th pipeline to the water that adds calculated amount preparation tank, and/or from reclaim water pot via pipeline to the recovery salt and the water that add calculated amount preparation tank, make the material in preparation tank reach the concentration needing; Under 85-102 ℃ of heating, stir and make material dissolution, measure pH value and crystallization point, be adjusted to if desired pH value and crystallization point qualified;
(ii) in preparation tank, add diatomite, continue to stir;
(iii) make material in preparation tank enter the upper space of the coarse strainer in coarse filtration tank through the first pipeline, under the effect of in-line pump suction filtration, material enters the lower space of coarse strainer by coarse strainer, and material is further forwarded to secondary filter via second pipe;
(iv) material, through the essence filter body filteration of secondary filter, enters the 3rd pipeline, and the stepping of going forward side by side enters preparation tank;
(v) optionally, make step (iii) and (iv) circulation, until the opacity of solution is up to specification;
(vi) open the first T-valve, make to process the qualified oxidizer salt aqueous solution and import solution discharge port, complete preparation process,
Wherein, the recovery salt in described recovery water pot and water are that Waste Water Centralized settling tank by being arranged at below the horizontal plane of device for formulating is collected and obtains through recycle-water strainer filtration treatment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110319585.XA CN102603433B (en) | 2011-10-20 | 2011-10-20 | Device and method for zero emission preparation of aqueous oxidizer salt solution |
| PCT/CN2012/082751 WO2013056631A1 (en) | 2011-10-20 | 2012-10-11 | Low-carbon environmental emulsion explosive, preparation method thereof and preparation device for oxidant salt aqueous solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110319585.XA CN102603433B (en) | 2011-10-20 | 2011-10-20 | Device and method for zero emission preparation of aqueous oxidizer salt solution |
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| CN102603433A CN102603433A (en) | 2012-07-25 |
| CN102603433B true CN102603433B (en) | 2014-02-12 |
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| CN201110319585.XA Expired - Fee Related CN102603433B (en) | 2011-10-20 | 2011-10-20 | Device and method for zero emission preparation of aqueous oxidizer salt solution |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013056631A1 (en) * | 2011-10-20 | 2013-04-25 | Xue Shizhong | Low-carbon environmental emulsion explosive, preparation method thereof and preparation device for oxidant salt aqueous solution |
| CN103694108B (en) * | 2013-12-17 | 2015-10-28 | 河南金丹乳酸科技股份有限公司 | Utilize equipment and the method for crystal lactic acid continuous seepage liquid lactic acid |
| CN111056887A (en) * | 2019-12-23 | 2020-04-24 | 青海海西东诺化工有限公司 | Method for producing emulsion explosive by recycling explosive production wastewater |
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|---|---|---|---|---|
| US4177141A (en) * | 1978-03-30 | 1979-12-04 | Hirosi Isizuka | Filter medium, process for preparation thereof, filtering method and filtering apparatus |
| CN2376983Y (en) * | 1999-05-29 | 2000-05-10 | 谭绩成 | Double-loop water filter |
| US6310253B1 (en) * | 1985-05-22 | 2001-10-30 | The United States Of America As Represented By The Department Of Energy | Preparation of 1,3,5-triamino-2,4,6-trinitrobenzene of submicron particle size |
| CN2707757Y (en) * | 2004-06-16 | 2005-07-06 | 重庆葛洲坝易普力化工有限公司 | Movable ground type mixed-loading explosive semi-finished products preparing vehicle |
-
2011
- 2011-10-20 CN CN201110319585.XA patent/CN102603433B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4177141A (en) * | 1978-03-30 | 1979-12-04 | Hirosi Isizuka | Filter medium, process for preparation thereof, filtering method and filtering apparatus |
| US6310253B1 (en) * | 1985-05-22 | 2001-10-30 | The United States Of America As Represented By The Department Of Energy | Preparation of 1,3,5-triamino-2,4,6-trinitrobenzene of submicron particle size |
| CN2376983Y (en) * | 1999-05-29 | 2000-05-10 | 谭绩成 | Double-loop water filter |
| CN2707757Y (en) * | 2004-06-16 | 2005-07-06 | 重庆葛洲坝易普力化工有限公司 | Movable ground type mixed-loading explosive semi-finished products preparing vehicle |
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| CN102603433A (en) | 2012-07-25 |
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