CN110395812A - A kind of the carbide slag processing method and system of centrifuge - Google Patents

Abstract

The invention belongs to the multistep treatment fields of sludge, it discloses a kind of carbide slag processing methods of centrifuge, the relative humidity that the method is related to slag bath, stirring pool, centrifuge, clear water reserviors and air is no more than 70%, the carbide slag processing method the following steps are included: (1) when, carbide slag is emitted into slag bath, static placement, the first waste liquid in carbide slag is leaked from the bottom side of slag bath to be discharged, and it is in without bright liquidated slurry state that carbide slag, which becomes surface layer,；(2) slurry is pumped into stirring pool, the slurry into stirring pool is passed through tap water, and the volume ratio of the tap water and slurry that are passed through is 2:9；(3) slurry for being passed through tap water is subjected to uniform stirring, slurry is in colloidal state or without obvious layering；This programme solves carbide slag because water content is uncontrollable or too low, to influence centrifuge charging unevenly, leading to the water content of dry slag is more than 25%, the problem of leakage in transit.

Description

A kind of the carbide slag processing method and system of centrifuge

Technical field

The present invention relates to the multistep treatment field of sludge, the carbide slag processing method of especially a kind of centrifuge and it is System.

Background technique

Carbide slag, calcium carbide hydrolysis obtain acetylene gas after with calcium hydroxide waste residue as main component.Acetylene (C2H2) is One of the important source material of basic organic synthesis industry adds the technique letter of water (wet process) production acetylene with calcium carbide (CaC2) for raw material It is single mature, larger specific gravity is accounted in China at present.1t calcium carbide adds water to produce the acetylene gas of 300kg or more, while generating 10t and containing Gu the industrial wastes of amount about 12%, is commonly called as carbide slag.The carbide slag generated after acetylene production discharges into venting moisture in slag bath, natural It is packaged outward transport after air-drying, qualified professional treatment company is entrusted to focus on.

By carbide slag after gravity settling separation, supernatant is recycled for most of manufacturer；Carbide slag is passed through into one Step dehydration, moisture content still reach 40%-50%, are in starchiness, and easy to leak pollutes road surface in transit, and long-term accumulation not only accounts for With a large amount of soils, and there is serious corrosion function to soil.

It can be carried out as scheduled by production plan for acetylene preparation, horizontal propulsion centrifuge is often used to by producers to calcium carbide Slag is handled, and handles carbide slag in this way, can obtain the dry slag that water content is lower than 25%, dry slag is in transit Without obvious leakage；The horizontal commonly used equipment for promoting centrifuge as calcium carbide Slag treatment, specific structure can refer to Authorization Notice No. and be The patent of invention scheme of CN109225668A, it discloses a kind of horizontal spiral discharge sedimentation centrifuge, including rack, rotary drum, Spiral propeller, differential mechanism, main motor and stand-by motor, the small end of the spiral propeller are provided with feed pipe, the spiral Cavity between propeller and rotary drum is connected to feed pipe, is provided with helical blade on the outside of the spiral propeller, it is described into Screw propulsion piece is provided on the inner wall of expects pipe, the hand of spiral of the screw propulsion piece and the hand of spiral of helical blade are anti- To cloth can be pushed to outlet from the entrance of feed pipe by the screw propulsion piece；The bottom of the main motor passes through bolster It is arranged on the rack.

But there is a situation where that effect is unstable using the horizontal process for promoting centrifuge, found through test of many times, calcium carbide The water content of slag influences the pumping material effect of slush pump, instability of flow, cause centrifuge can not uniform feeding, point of solid liquid phase It is poor from effect, it is difficult to the continual and steady dry slag isolated water content and be lower than 25%；If by the carbide slag without preliminary treatment It is directly discharged into centrifuge, the separating effect of solid liquid phase is able to satisfy requirement, but energy consumption is excessive, and production cost increases severely, and makes simultaneously Excessive at centrifuge load, failure rate increases, and finally influences production capacity.

In this production field, there is not yet the carbide slag processing method and system of a kind of centrifuge, electricity can not be solved Rock ballast is because water content is uncontrollable or too low, to influence centrifuge charging unevenly, leading to the water content of dry slag is more than 25%, fortune Defeated the problem of leaking on the way.

Summary of the invention

The object of the present invention is to provide the carbide slag processing methods and system of a kind of centrifuge, solve carbide slag because aqueous Measure it is uncontrollable or too low, to influence that centrifuge charging is uneven, and leading to the water content of dry slag is more than 25%, is occurred in transit The problem of leakage.

Technical solution provided by the invention are as follows: a kind of carbide slag processing method of centrifuge, the method are related to slag Pond, stirring pool, centrifuge, clear water reserviors and air relative humidity be no more than 70%, the carbide slag processing method includes Following steps:

(1) carbide slag is emitted into slag bath, static placement, the first waste liquid in carbide slag is leaked from the bottom side of slag bath and arranged Out, it is in without bright liquidated slurry state that carbide slag, which becomes surface layer,；

(2) slurry is pumped into stirring pool, the slurry into stirring pool is passed through tap water, the tap water that is passed through and slurry Volume ratio is 2:9-1:3；

(3) slurry for being passed through tap water is subjected to uniform stirring, slurry is in colloidal state or without obvious layering；

(4) slurry of uniform stirring is pumped into centrifuge, carries out the separation of dry slag and the second waste liquid, to the dry slag isolated It is packed into packaging bag, transport processing after dry slag is packed；

(5) the second waste liquid isolated is passed through clear water reserviors, after the second waste liquid staticly settles in clear water reserviors, in clear water reserviors Supernatant be passed through acetylene preparation production link.

In the carbide slag processing method of above-mentioned centrifuge, when the relative humidity in air is greater than 70%, to stirring The slurry for not being passed through tap water in pond is sampled, weighs, drying, being re-weighed the measurement for completing water content, and the slurry contains Water is higher than 60%, then is pumped into centrifuge after uniform stirring.

In the carbide slag processing method of above-mentioned centrifuge, when the slurry of stirring is in colloidal state or without obvious layering Afterwards, continue stirring until the slurry of stirring pool is evacuated；The upside that first waste liquid is drained to clear water reserviors is flowed into clear water Chi Zhong.

In the carbide slag processing method of above-mentioned centrifuge, when the accumulation height of the deposit in clear water reserviors is more than clear At the one third of the depth in pond, clearing and retrieving is carried out to deposit, is thrown in slag bath.

A kind of calcium carbide slag disposal system of centrifuge, including for collecting and the slag bath of primary filter carbide slag, being used for The well-mixed stirring pool of moisture, the centrifuge for secondary filtration slurry, the clear water reserviors for three-stage filtration in slurry, institute The slag bath stated is equipped with the first slush pump, and the pumping material end of first slush pump is arranged in the bottom of slag bath, and described first The discharge end of slush pump is connected to arrangement with the upside of stirring pool by first pipe；

The stirring pool is equipped with the second slush pump, blender and the second pipe for being passed through tap water, described The pumping material end of the second slush pump the bottom of stirring pool is set, the discharge end of second slush pump by third pipeline with The bottom of stirring pool is arranged in centrifuge connection, the power output end of the blender；

The clear water reserviors are equipped with centrifugal pump, and two points of the pond depth of clear water reserviors are arranged in the pumping material end of the suction pump One of place, the suction pump be connected to production link prepared by acetylene by the 4th pipeline.

In the calcium carbide slag disposal system of above-mentioned centrifuge, it is respectively equipped in the first pipe, second pipe Gate valve and flowmeter, the third pipeline are equipped with regulating valve, are equipped with hygrometer by the stirring pool；

The pumping material end of the centrifugal pump is equipped with L-shaped bend pipe, and the feed end of the bend pipe is upwardly disposed；Described The material of bend pipe is polyvinyl chloride.

In the calcium carbide slag disposal system of above-mentioned centrifuge, a side bottom of the slag bath is equipped with filter opening, described Filter opening interior survey be equipped with inclined-plane；The downside of filter opening is arranged in the one end on the inclined-plane, and the other end on the inclined-plane is set as It extends obliquely upward to the opposite side of slag bath；

The outside of the filter opening is equipped with irrigation canals and ditches, and the irrigation canals and ditches are connected to arrangement with the upside of clear water reserviors；Described first The pumping material end of slush pump is the side arrangement for closing on filter hole.

In the calcium carbide slag disposal system of above-mentioned centrifuge, the angle of the inclined-plane and horizontal plane is set as 3 ° -5 °.

In the calcium carbide slag disposal system of above-mentioned centrifuge, the 4th pipeline is equipped with filter, described Filter is filter-press arrangement, and the filter is equipped with filter cloth, and the material of the filter cloth is polypropylene.

In the calcium carbide slag disposal system of above-mentioned centrifuge, the first pipe, second pipe, third pipeline, The material of 4th pipeline is polyvinyl chloride.

The present invention is after adopting the above technical scheme, it has the beneficial effect that

Further to improve, for this programme by the carbide slag processing method of setting centrifuge, operation principles are first The moisture filter of carbide slag falls, and the water content of carbide slag is accurately controlled in 40%-50%；Then a certain amount of certainly by addition Water makes slurry water content up to 50%-60%；Then the slurry of added tap water is stirred, the moisture in slurry It is uniformly distributed；The dry slag that water content is lower than 25% is isolated finally by centrifuge, carries out pack transport processing；Solve carbide slag Because water content is uncontrollable or too low, to influence centrifuge charging unevenly, leading to the water content of dry slag is more than 25%, transport way Middle the problem of leaking.

Further to improve, this programme is stood after being discharged into slag bath by setting carbide slag, so that carbide slag is through primary filter Water content is 40%-50% afterwards, and carbide slag becomes slurry state by sewage state, accurately controls the preliminary water content of carbide slag, So as to the expansion of subsequent handling；Wherein, the filter residue part of carbide slag is the solid porous state mixture based on calcium hydroxide, and the One waste liquid density is less than filter residue part, and slag bath is discharged in leakage down under gravity, and the filter residue in slag bath is equivalent to multilayer Impurity in first waste liquid is carried out primary filter by the strainer of structure, on contaminant filter to filter residue after, filter residue at this time is slag Slurry carries out the processing of subsequent processing to slurry, is in addition collected recycling reprocessing to the first waste liquid of discharge.

Further to improve, this programme is passed through a certain amount of tap water by setting, so that the water content of slurry is from 40%- 50% promotes the level for arriving 50%-60%, and the second slush pump is pumped into centrifuge, this process stability of flow, and centrifuge is equal The dehydrating effect of even charging, slurry meets the requirements；Wherein, the ratio that is passed through of tap water is according to " solution dilution in Moore's Law The amount of the substance of front and back solute is constant " this principle is calculated, concentration after concentration × dilution front volume=dilution before diluting × Volume after dilution, it may be assumed that: C1 × V1=C2 × V2；If water content is up to 50% after slurry primary filter, it can still be passed through a small amount of tap water Its water content increase is set not surpass 5%, to take into account such case, take 1 cube of water content up to finally there is preferable dehydrating effect The slurry of 40%-50% takes the median 45% in water content ranges as C1 as V1, takes in required water content ranges Median 55% be used as C2, showing that tap water is passed through ratio 2:9, then taking limiting value water content 40% is C1, ultimate water content Amount 60% is C2, and V1 is constant, obtains the maximum ratio 1:3 that tap water is passed through, in summary many-sided to consider, so that control is originally Water is passed through flow, controls the water content of slurry in 50%-60%, and centrifuge is finally made to have preferable dehydrating effect.

Slurry further to improve, that this programme is passed through tap water by the way that stirring is arranged, so that the solute and moisture of slurry It is sufficiently mixed, moisture more uniform distribution, the slurry that the second slush pump each moment is extracted, water content in slurry exist In 50%-60%, the second slush pump has preferable extraction effect, stability of flow, centrifuge uniform feeding, the dehydration effect of slurry Fruit meets the requirements.

Further to improve, this programme carries out pack transport by the dry slag that setting is isolated, so that the life of acetylene preparation Producing process will not can not be handled because of carbide slag, and environmental issue occurs, production plan be influenced, to avoid reducing production capacity；Pass through It second waste liquid is set is discharged into clear water reserviors and staticly settle, the production for allowing the supernatant in clear water reserviors to be passed through acetylene preparation is worked as Middle Recycling needs a large amount of water as raw material because acetylene is prepared as wet processing, and the Recycling of supernatant is dropped significantly Low production cost.

Further to improve, this programme is by setting to measurement slurry water content when air humidity is more than 70% to judge to be It is no to need to be passed through tap water into slurry, because primary filter is to be filtered disengaging, the phase of air in natural conditions using gravity It is influenced on humidity on it very greatly, especially rainy days, the water content after primary filter can be more than 50% or more, select fine day and yin The separation of its relative humidity is beyond the mark to be measured to slurry as boundary, can effectively avoid increasing centrifuge Using load, increase the operational quality and efficiency of centrifuge, because of the relationship that water content increases, will cause the increasing of centrifuge dewatering time Long, there is energy consumption raising in pump in each link and other electrical parts in system, system is overall energy consumption is high it is big increase, influence Production cost.

Further to improve, through setting water content up to after meeting the requirements, slurry is stirred to colloidal state or nothing this programme Obvious layering, continues to stir, until slurry is evacuated so that the second slush pump each moment be extracted into be uniform stirring slag Slurry guarantees that the water content for being extracted into slurry is equally, thus stability of flow, centrifuge uniform feeding, the dehydrating effect symbol of slurry It closes and requires；When the second slush pump is influenced by power or number, and the slurry of stirring pool can not be evacuated in a short time, so that The pumping material overlong time of second slush pump causes slurry secondary clearing again easily occur, and moisture can not be uniformly distributed, and the second slush pump is every The slurry water content that one moment was extracted is not consistent, causes instability of flow, centrifuge is unevenly fed, the dehydrating effect of slurry It is poor, by avoiding instability of flow very well in lasting stirring, and dehydrating effect is made to meet the requirements.

Further to improve, this programme is drained in clear water reserviors by the way that the first waste liquid is arranged, and is received to the filtrate of primary filter Collection recycling reprocessing, increases recyclable solution Recycling, reduces it and produces the demand to external water, and then reduces its production Cost improves the competitiveness of product in market；First waste liquid is introduced by the upside of clear water reserviors, and bottom is flowed on the upside of clear water reserviors, The the first waste liquid feed end for avoiding the problem that clear water reserviors is not in flow backward counter gush.

Further to improve, this programme passes through the depth that the deposit accumulation height in setting clear water reserviors is more than clear water reserviors It is recycled when at one third, because the first waste liquid, the second waste liquid are flowed into from the upside of clear water reserviors, is impacted from top to bottom, clearly Original deposit raises floating in pond, influences sedimentation effect, but deposit is very few is not easy to clearing and retrieving, and one third Place balances the relationship between sedimentation effect and easy cleaning recycling well；The pumping material end of centrifugal pump is also increased simultaneously most The selection of excellent height by the resulting deposit of three-stage filtration, then puts into continuous circulating filtration in slag bath, greatly enhances system Processing capacity.

Further to improve, this programme expects end in the bottom of slag bath, so that the first mud by the pumping of the first slush pump of setting Stock pump can extract the slurry in slag bath to stirring pool completely, improve extraction efficiency；By the discharging that first pipe is arranged End is in the upside of stirring pool, so that slurry is from the upside of stirring pool toward falling, slurry will not be deposited in the discharge end of first pipe, Slurry, is smoothly evacuated in stirring pool by the appearance for avoiding the occurrence of blocking, flowing backward, return situations such as gushing；Similarly, pass through the second slush pump The setting of pumping material end, the slurry in stirring pool can be extracted into centrifuge completely, the discharge end of second pipe is arranged, and makes it not It can be blocked, tap water can be passed through in slurry by the moment, to improve the water content of slurry；The power output of blender is set It holds and is stirred in the bottom of stirring pool, the slurry of lower layer is first stirred that the slurry on upper layer is driven to be stirred, and cooperates the second mud The pumping material end of stock pump is in bottom, and what the second slush pump was preferentially extracted into is all the slurry of uniform stirring, and water content is consistent, be conducive to from The uniform feeding of scheming.

Further to improve, this programme passes through the pumping material end of setting centrifugal pump at the half of the pond depth of clear water reserviors, The deposit of clear water reserviors is cooperated to be no more than the depth of one third, it, can be with one while so that centrifuge avoids extraction deposit Secondary property extracts more supernatants, improves working efficiency, has preferable pump liquid effect.

Further to improve, this programme is by gate valve and flowmeter in setting first pipe, and first control is led into stirring pool Slurry flow, thus the amount that is passed through of control, that is, the volume being passed through, be passed through after a certain amount of slurry close the first slush pump and Gate valve stops transporting slurry, and the gate valve opened on second pipe is passed through tap water, under the flowmeter auxiliary on second pipe, Closing gate valve after a certain amount of tap water is inputted, stops conveying tap water, carries out the stirring of next step；By the way that throttle valve is arranged, So that improving the stability of feed flow, centrifugation using throttle valve during slurry is via third pipeline to centrifuge The charging of machine is more uniform；The setting of hygrometer is then the relative humidity in auxiliary judgment air, opposite pre- by inquiry weather Report learns the relative humidity of regional atmosphere, and in-site measurement is more accurate, effectively reduces energy consumption or improves the dehydration effect of carbide slag Fruit；The arrangement of bend pipe, so that centrifugal pump extracts supernatant by bend pipe again, and the feed end of bend pipe is upwardly disposed, and then avoids The deposit in lower layer is sucked, the pumping material quality of supernatant is improved.

It being further improved, this programme is by the filter opening of slag bath, so that after carbide slag is passed through slag bath, under gravity, Moisture leaks down, until leaking into filter opening, the first waste liquid is discharged outside slag bath by filter opening, slurry is left in slag bath, is completed Carbide slag primary filter；The setting on inclined-plane, so that the moisture constantly permeated down obtains guiding and is drained to filter opening discharge, first is useless Liquid can be smoothly discharged；The upside of clear water reserviors is connected to by setting irrigation canals and ditches, so that the first waste liquid leads under the drainage guiding of irrigation canals and ditches Enter clear water reserviors；And the pumping material end of the first slush pump is arranged in the side for closing on filter opening, so that the pumping material end of the first slush pump is located at The top of the downside on inclined-plane, preferably extracts slurry.

Further to improve, this programme is 40%-50%'s according to water content by the angle on setting inclined-plane and horizontal plane Carbide slag angle of repose is about between 53.5 ° -54.5 °, the internal friction angle of slurry is about 17.5 ° -19.5 ° and the attachment with inclined-plane Power is about 44kgf/cm²-48kgf/cm², repeatedly practical adjustment, while so that the first waste liquid is discharged in slag bath, slurry can be in slag The static accumulation in pond prevents slurry from blocking filter opening as the first waste liquid excessively flows to filter opening, or a large amount of slurry flows out filter opening, mentions The filter effect of high primary filter allows more slurries to be passed through the dehydration efficiency that centrifuge improves system.

Further to improve, this programme is by setting filter, so that being filtered into cycling use of water prepared by acetylene It is passed through in production link again afterwards, because supernatant is diluted by a large amount of tap water, sl. sol. calcium ion, magnesium is contained in tap water The substances such as ion, chloride ion, sulfate, minerals, though excessive influence is had no on the chemical reaction of acetylene preparation, it is straight for a long time Connect the production link into acetylene preparation, dirt can be formed in acetylene preparation used equipment and pipeline, accelerate equipment and The corrosion of pipeline, or cause because blocking, thus caused by production efficiency reduce the problem of；The selection of filter cloth material, using having Stronger alkali resistance and lower-cost polypropylene improve filter cloth service life, production cost needed for reducing consumptive material.

Further to improve, this programme is arranged by the material of first pipe, second pipe, third pipeline, the 4th pipeline, Mixed solution of the solution in the duct based on calcium hydroxide, and in the case that calcium hydroxide is alkaline matter, so that pipe The alkali resistance in road is improved, to increase resistance to corrosion, improves the service life of pipeline, reduces the replacement dimension of pipeline It repairs, reduces production cost, improve production efficiency.

Detailed description of the invention

Fig. 1 is the flow chart of the carbide slag processing method of the centrifuge of the embodiment of the present invention 1；

Fig. 2 is the schematic diagram of the calcium carbide slag disposal system of the centrifuge of the embodiment of the present invention 1；

Fig. 3 is the structural schematic diagram of the slag bath of the embodiment of the present invention 1；

Fig. 4 is the side view cutaway drawing of the slag bath of the embodiment of the present invention 1.

Appended drawing reference: 1, slag bath；2, the first waste liquid；3, the first slush pump；4, first pipe；5, flowmeter；6, gate valve；7, Tap water；8, second pipe；9, blender；10, the second slush pump；11, stirring pool；12, regulating valve；13, third pipeline；14, Centrifuge；15, dry slag；16, packaging bag；17, irrigation canals and ditches；18, the second waste liquid；19, supernatant；20, deposit；21, clear water reserviors； 22, bend pipe；23, centrifugal pump；24, filter；25, the 4th pipeline；26, filter opening；27, inclined-plane

Specific embodiment

With reference to embodiment, technical solution of the present invention is described in further detail, but do not constituted pair Any restrictions of the invention.

Embodiment 1

As shown in Figs 1-4, a kind of carbide slag processing method of centrifuge 14, the method are related to slag bath 1, stirring pool 11, the relative humidity of centrifuge 14, clear water reserviors 21 and air is no more than 70%, and the carbide slag processing method includes following Step:

(1) carbide slag is emitted into slag bath 1, static placement, the first waste liquid 2 in carbide slag is seeped from the bottom side of slag bath 1 It omits in printing out, it is in without bright liquidated slurry state that carbide slag, which becomes surface layer,；

(2) slurry is pumped into stirring pool 11, the slurry into stirring pool 11 is passed through tap water 7, the tap water 7 being passed through with The volume ratio of slurry is 2:9；

(3) slurry for being passed through tap water 7 is subjected to uniform stirring, slurry is in colloidal state or without obvious layering；

(4) slurry of uniform stirring is pumped into centrifuge 14, carries out the separation of dry slag 15 and the second waste liquid 18, to isolating Dry slag 15 be packed into packaging bag 16, transport processing after dry slag 15 is packed；

(5) the second waste liquid 18 isolated is passed through clear water reserviors 21, after the second waste liquid 18 staticly settles in clear water reserviors 21, Supernatant 19 in clear water reserviors 21 is passed through the production link of acetylene preparation.

Its operation principles is that first the moisture filter of carbide slag is fallen, the water content of carbide slag is accurately controlled in 40%- 50%；Then by adding a certain amount of tap water 7, make slurry water content up to 50%-60%；Then to added tap water 7 slurry is stirred, the uniform moisture distribution in slurry；It is dry lower than 25% that water content is isolated finally by centrifuge 14 Slag 15 carries out pack transport processing；Carbide slag is solved because water content is uncontrollable or too low, so that influencing centrifuge 14 feeds unevenness Even, leading to the water content of dry slag 15 is more than 25%, the problem of leakage in transit.

Its operating process is that acetylene is prepared generated carbide slag and is discharged into slag bath 1, carbide slag filters in slag bath 1 After completing slurry, after slurry is evacuated to stirring pool 11 by valve, the first slush pump 3 in beginning first pipe 4, first pipe is closed Valve, the first slush pump 3 on 4 open the valve on second pipe 8, after tap water 7 is passed through, close on second pipe 8 Valve, start blender 9, slurry is pumped into centrifuge 14 by the valve, the second slush pump 10 on later on third pipeline 13, Carbide slag finally obtains preferable dehydrating effect.

Firstly, being stood after being discharged into slag bath 1 by setting carbide slag, so that carbide slag water content after primary filter is 40%-50%, carbide slag become slurry state by sewage state, the preliminary water content of carbide slag are accurately controlled, so as to subsequent work The expansion of sequence；Wherein, the filter residue part of carbide slag is the solid porous state mixture based on calcium hydroxide, and the first waste liquid 2 is close Degree is less than filter residue part, and slag bath 1 is discharged in leakage down under gravity, and the filter residue in slag bath 1 is equivalent to multilayered structure Impurity in first waste liquid 2 is carried out primary filter by strainer, on contaminant filter to filter residue after, filter residue at this time is slurry, right Slurry carries out the processing of subsequent processing, is in addition collected recycling reprocessing to the first waste liquid 2 of discharge.

Then, by setting be passed through a certain amount of tap water 7 so that the water content of slurry from 40%-50% promoted to The level of 50%-60%, the second slush pump 10 are pumped into centrifuge 14, this process stability of flow, centrifuge 14 uniformly into Material, the dehydrating effect of slurry meet the requirements；Wherein, the ratio that is passed through of tap water 7 is according to " solution dilution front and back in Moore's Law The amount of the substance of solute is constant " this principle is calculated, concentration × dilution after concentration × dilution front volume=dilution before diluting Volume afterwards, it may be assumed that: C1 × V1=C2 × V2；If water content is up to 50% after slurry primary filter, can still be passed through a small amount of tap water 7 makes Its water content increase does not surpass 5%, to take into account such case, take 1 cube of water content up to finally there is preferable dehydrating effect The slurry of 40%-50% takes the median 45% in water content ranges as C1 as V1, takes in required water content ranges Median 55% be used as C2, showing that tap water 7 is passed through ratio 2:9, then taking limiting value water content 40% is C1, ultimate water content Measuring 60% is C2, and V1 is constant, obtains the maximum ratio 1:3 that tap water 7 is passed through, in summary many-sided to consider, so that control is certainly Water 7 is passed through flow, controls the water content of slurry in 50%-60%, and centrifuge 14 is finally made to have preferable dehydrating effect.

Then, the slurry for being passed through tap water 7 by the way that stirring is arranged, so that the solute and moisture of slurry are sufficiently mixed, moisture The more uniform distribution in slurry, the slurry that each moment of the second slush pump 10 is extracted, water content is in 50%-60% Interior, the second slush pump 10 has preferable extraction effect, stability of flow, 14 uniform feeding of centrifuge, the dehydrating effect symbol of slurry It closes and requires.

Finally, carry out pack transport by the dry slag 15 isolated of setting, so that the production procedure of acetylene preparation will not be because Carbide slag can not be handled, and environmental issue occur, influence production plan, to avoid reducing production capacity；By the way that the second waste liquid is arranged 18 are discharged into clear water reserviors 21 and staticly settle, and the supernatant 19 in clear water reserviors 21 is passed through in the production of acetylene preparation and is followed Ring is used again, because acetylene is prepared as wet processing, needs a large amount of water as raw material, the Recycling of supernatant 19 substantially reduces Production cost.

Wherein, the packaging bag 16 is set as the woven bag of double-layer structure, and the inside of the woven bag, which is equipped with, to be used for The plastic film of water proof, the woven bag, plastic film material be polypropylene so that utilizing tool in transit link The polypropylene and double-layer structure for having stronger alkali resistance are packaged dry slag 15, avoid the moisture water clock in dry slag 15, subtract Few ground pollution.

In the present embodiment, when the relative humidity in air is greater than 70%, to the slag for not being passed through tap water 7 in stirring pool 11 Slurry is sampled, weighs, drying, being re-weighed the measurement for completing water content, and the water content of the slurry is higher than 60%, then by equal It is pumped into after even stirring in centrifuge 14.

Preferably, by setting to air humidity is more than 70% when measure slurry water content to judge whether to need past slurry In be passed through tap water 7, because primary filter is to be filtered disengaging in natural conditions using gravity, the relative humidity of air is to its shadow Sound is very big, especially rainy days, and the water content after primary filter can be more than 50% or more, selects fine day and cloudy relative humidity Separation is as boundary, and beyond the mark to be measured to slurry, can effectively avoid increase centrifuge 14 uses load, increases The operational quality and efficiency of big centrifuge 14 will cause the growth of 14 dewatering time of centrifuge, system because of the relationship that water content increases In each link in pump and other electrical parts there is energy consumption raising, system is overall energy consumption is high it is big increase, influence to be produced into This.

In the present embodiment, after the slurry of stirring is in colloidal state or without obvious layering, continue stirring until stirring pool 11 slurry is evacuated；The upside that first waste liquid 2 is drained to clear water reserviors 21 is flowed into clear water reserviors 21.

In practical applications, through setting water content up to after meeting the requirements, slurry is stirred to colloidal state or without obvious point Layer, continues to stir, until slurry is evacuated so that each moment of the second slush pump 10 be extracted into be uniform stirring slurry, protect The water content that card is extracted into slurry is equally, so that stability of flow, 14 uniform feeding of centrifuge, the dehydrating effect of slurry conform to It asks；When the second slush pump 10 is influenced by power or number, and the slurry of stirring pool 11 can not be evacuated in a short time, so that The pumping material overlong time of second slush pump 10 causes slurry secondary clearing again easily occur, and moisture can not be uniformly distributed, the second slush pump The slurry water content that 10 each moment were extracted is not consistent, causes instability of flow, and centrifuge 14 is unevenly fed, and slurry takes off Water effect is poor, by avoiding instability of flow very well in lasting stirring, and dehydrating effect is made to meet the requirements.

In addition, being drained in clear water reserviors 21 by the way that the first waste liquid 2 is arranged, recycling is collected to the filtrate of primary filter and is located again Reason increases recyclable solution Recycling, reduces it and produces the demand to external water, and then reduce its production cost, improves The competitiveness of product in market；First waste liquid 2 is introduced by the upside of clear water reserviors 21, is flowed to bottom from the upside of clear water reserviors 21, is avoided 2 feed end of the first waste liquid of clear water reserviors 21 is not in flow backward anti-the problem of gushing.

In the present embodiment, when three points that the accumulation height of the deposit 20 in clear water reserviors 21 is more than the depth of clear water reserviors 21 One of place, to deposit 20 carry out clearing and retrieving, be thrown in slag bath 1.

It in actual operation, is more than the depth of clear water reserviors 21 by the accumulation height of deposit 20 in setting clear water reserviors 21 It is recycled when at one third, because the first waste liquid 2, the second waste liquid 18 are flowed into from the upside of clear water reserviors 21, is rushed from top to bottom It hits, original deposit 20 raises floating in clear water reserviors 21, influences sedimentation effect, but deposit 20 is very few is not easy to clear up back It receives, and balances the relationship between sedimentation effect and easy cleaning recycling at one third well；Centrifugation is also increased simultaneously The selection of the optimal height at the pumping material end of pump 23, by the resulting deposit 20 of three-stage filtration, then puts into slag bath 1 and constantly recycles Filtering, greatly enhances the processing capacity of system.

As shown in Figs 1-4, a kind of calcium carbide slag disposal system of centrifuge 14, including for collecting and primary filter calcium carbide The slag bath 1 of slag, in slurry the well-mixed stirring pool 11 of moisture, for secondary filtration slurry centrifuge 14, be used for The clear water reserviors 21 of three-stage filtration, the slag bath 1 are equipped with the first slush pump 3, and the pumping material end of first slush pump 3 is arranged In the bottom of slag bath 1, the discharge end of first slush pump 3 is connected to arrangement with the upside of stirring pool 11 by first pipe 4；

The stirring pool 11 is equipped with the second slush pump 10, blender 9 and the second pipe for being passed through tap water 7 8, the bottom of stirring pool 11 is arranged in the pumping material end of second slush pump 10, and the discharge end of second slush pump 10 is logical It crosses third pipeline 13 to connect with centrifuge 14, the bottom of stirring pool 11 is arranged in the power output end of the blender 9.

Preferably, expect that end in the bottom of slag bath 1, allows the first slush pump 3 will by the way that the pumping of the first slush pump 3 is arranged Slurry in slag bath 1 is extracted to stirring pool 11 completely, improves extraction efficiency；Discharge end by the way that first pipe 4 is arranged is stirring The upside in pond 11 is mixed, so that slurry is from the upside of stirring pool 11 toward falling, slurry will not be deposited in the discharge end of first pipe 4, Slurry is smoothly evacuated in stirring pool 11 by the appearance for avoiding the occurrence of blocking, flowing backward, return situations such as gushing；Similarly, pass through the second mud The pumping material end setting of pump 10, can extract the slurry in stirring pool 11 into centrifuge 14, the discharge end of second pipe 8 is set completely It sets, so that it will not be blocked, tap water 7 can be passed through in slurry by the moment, to improve the water content of slurry；Blender is set 9 power output end is stirred in the bottom of stirring pool 11, and the slurry of lower layer is first stirred that the slurry on upper layer is driven to be stirred It mixes, cooperates the pumping material end of the second slush pump 10 in bottom, what the second slush pump 10 was preferentially extracted into is all the slurry of uniform stirring, is contained Water is consistent, is conducive to the uniform feeding of centrifuge 14.

In the present embodiment, the clear water reserviors 21 are equipped with centrifugal pump 23, and the pumping material end setting of the suction pump exists At the half of the pond depth of clear water reserviors 21, the suction pump is connected by the 4th pipeline 25 and the production link of acetylene preparation It is logical.

Its actual effect is that the pumping by the way that centrifugal pump 23 is arranged expects that end at the half of the pond depth of clear water reserviors 21, is matched The deposit 20 for closing clear water reserviors 21 is no more than the depth of one third, while so that centrifuge 14 avoids extracting deposit 20, More supernatants 19 can be disposably extracted, working efficiency is improved, there is preferable pump liquid effect.

In the present embodiment, the first pipe 4, be respectively equipped with gate valve 6 and flowmeter 5 on second pipe 8, it is described Third pipeline 13 is equipped with regulating valve 12, is equipped with hygrometer by the stirring pool 11；

The pumping material end of the centrifugal pump 23 is equipped with L-shaped bend pipe 22, and the feed end of the bend pipe 22 is upwardly disposed； The material of the bend pipe 22 is polyvinyl chloride.

Preferably, by the gate valve 6 and flowmeter 5 in setting first pipe 4, first control is led into the slurry of stirring pool 11 Flow, so that the amount that control is passed through, that is, the volume being passed through close the first slush pump 3 and gate valve 6 after being passed through a certain amount of slurry, Stopping transporting slurry, the gate valve 6 opened on second pipe 8 is passed through tap water 7, in the case where the flowmeter 5 on second pipe 8 assists, Closing gate valve 6 after a certain amount of tap water 7 is inputted, stops conveying tap water 7, carries out the stirring of next step；It is throttled by setting Valve, so that improving the stabilization of feed flow using throttle valve during slurry is delivered to centrifuge 14 via third pipeline 13 Property, the charging of centrifuge 14 is more uniform；The setting of hygrometer is then the relative humidity in auxiliary judgment air, opposite to pass through The relative humidity of regional atmosphere is learnt in inquiry weather forecast, and in-site measurement is more accurate, is effectively reduced energy consumption or is improved calcium carbide The dehydrating effect of slag；The arrangement of bend pipe 22, so that centrifugal pump 23 extracts supernatant 19 by bend pipe 22 again, and the charging of bend pipe 22 It holds upwardly disposed, and then avoids sucking the deposit 20 in lower layer, improve the pumping material quality of supernatant 19.

In the present embodiment, a side bottom of the slag bath 1 is equipped with filter opening 26, and the interior survey of the filter opening 26 is equipped with oblique Face 27；The downside of filter opening 26 is arranged in the one end on the inclined-plane 27, and the other end on the inclined-plane 27 is set as extending obliquely upward To the opposite side of slag bath 1；

The outside of the filter opening 26 is equipped with irrigation canals and ditches 17, and the irrigation canals and ditches 17 are connected to arrangement with the upside of clear water reserviors 21；Institute The pumping material end for the first slush pump 3 stated is the side arrangement for closing on filter hole 26.

In actual use, by the filter opening 26 of slag bath 1, so that after carbide slag is passed through slag bath 1, under gravity, Moisture leaks down, until leaking into filter opening 26, first waste liquid 2 is discharged outside slag bath 1 by filter opening 26, leaves slag in slag bath 1 Slurry completes carbide slag primary filter；The setting on inclined-plane 27, so that the moisture constantly permeated down obtains guiding and is drained to filter opening 26 Discharge, the first waste liquid 2 can be smoothly discharged；The upside of clear water reserviors 21 is connected to by setting irrigation canals and ditches 17, so that the first waste liquid 2 is in ditch The drainage of canal 17, which is led, opens below into clear water reserviors 21；And the pumping material end of the first slush pump 3 is arranged in the side for closing on filter opening 26, so that The pumping material end of first slush pump 3 is located at the top of the downside on inclined-plane 27, preferably extracts to slurry.

In the present embodiment, the angle of the inclined-plane 27 and horizontal plane is set as 3 ° -5 °.

In test of many times, by the way that the angle on inclined-plane 27 and horizontal plane is arranged, the calcium carbide for being 40%-50% according to water content Slag angle of repose is about between 53.5 ° -54.5 °, the internal friction angle of slurry is about 17.5 ° -19.5 ° and the adhesive force with inclined-plane 27 About 44kgf/cm²-48kgf/cm², repeatedly practical adjustment, while so that the first waste liquid 2 are discharged in slag bath 1, slurry can be in slag The static accumulation in pond 1 prevents slurry from blocking filter opening 26 as the first waste liquid 2 excessively flows to filter opening 26, or a large amount of slurry outflow Filter opening 26 improves the filter effect of primary filter, and more slurries is allowed to be passed through the dehydration efficiency that centrifuge 14 improves system.

In the present embodiment, the 4th pipeline 25 is equipped with filter 24, and the filter 24 is filter-press arrangement, The filter 24 is equipped with filter cloth, and the material of the filter cloth is polypropylene.

As a further improvement, by the way that filter 24 is arranged, so that being filtered into cycling use of water prepared by acetylene Be passed through in production link again afterwards, because supernatant 19 is diluted by a large amount of tap water 7, in tap water 7 containing sl. sol. calcium from The substances such as son, magnesium ion, chloride ion, sulfate, minerals, though excessive influence is had no on the chemical reaction of acetylene preparation, it is long Time is passed directly into the production link of acetylene preparation, can form dirt in acetylene preparation used equipment and pipeline, accelerate The corrosion of equipment and pipeline, or cause because blocking, thus caused by production efficiency reduce the problem of；The selection of filter cloth material, benefit With having stronger alkali resistance and lower-cost polypropylene, filter cloth service life is improved, production cost needed for reducing consumptive material.

In the present embodiment, the first pipe 4, second pipe 8, third pipeline 13, the material of the 4th pipeline 25 are equal For polyvinyl chloride.

As the another improvement of the present embodiment, pass through first pipe 4, second pipe 8, third pipeline 13, the 4th pipeline 25 Material setting, mixed solution of the solution in the duct based on calcium hydroxide, and calcium hydroxide be alkaline matter feelings Under condition, so that the alkali resistance of pipeline is improved, to increase resistance to corrosion, the service life of pipeline is improved, reduces pipe The repair and replacement in road reduce production cost, improve production efficiency.

Comparative example 1

In addition to after primary filter, still there is a small amount of liquid phase layer on the slurry surface layer of slag bath, other steps and processing system with Embodiment 1 is identical.

Comparative example 2

Volume ratio in addition to the tap water and slurry that are passed through is being less than 2:9；, other steps and processing system are and embodiment 1 is identical.

Comparative example 3

In addition to without carrying out uniform stirring to the slurry for being passed through tap water, other steps and processing system with 1 phase of embodiment Together.

The water content detection data contrast table of dry slag before table 1. packs

The treating capacity statistical data contrast table of the qualified dry slag of table 2.

Above data comparison shows carbide slag processing method and system using this kind of centrifuge, effectively solution calcium carbide Slag is because water content is uncontrollable or too low, to influence centrifuge charging unevenly, leading to the water content of dry slag is more than 25%, transport The problem of leaking on the way avoids the moisture water clock in dry slag, reduces ground pollution；Meanwhile improving carbide slag dehydration Processing capacity, production capacity can be handled by increasing, and reduced processing cost, finally treatment effeciency is greatly promoted.

The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention, It should be equivalent substitute mode, be included within the scope of the present invention.

Claims (10)

1. a kind of carbide slag processing method of centrifuge, the method be related to slag bath, stirring pool, centrifuge, clear water reserviors with And the relative humidity of air is no more than 70%, which is characterized in that the carbide slag processing method the following steps are included:

(1) carbide slag being emitted into slag bath, static placement, the first waste liquid in carbide slag is leaked from the bottom side of slag bath and is discharged, It is in without bright liquidated slurry state that carbide slag, which becomes surface layer,；

(2) slurry is pumped into stirring pool, the slurry into stirring pool is passed through tap water, the volume of the tap water and slurry that are passed through Than for 2:9-1:3；

(3) slurry for being passed through tap water is subjected to uniform stirring, slurry is in colloidal state or without obvious layering；

(4) slurry of uniform stirring is pumped into centrifuge, carries out the separation of dry slag and the second waste liquid, the dry slag isolated is packed into Packaging bag, transport processing after dry slag is packed；

(5) the second waste liquid isolated is passed through clear water reserviors, it is upper in clear water reserviors after the second waste liquid staticly settles in clear water reserviors Clear liquid is passed through the production link of acetylene preparation.

2. the carbide slag processing method of centrifuge according to claim 1, which is characterized in that when relatively wet in air Degree is greater than 70%, is sampled, weighs to the slurry for not being passed through tap water in stirring pool, drying, being re-weighed and complete water content The water content of measurement, the slurry is higher than 60%, then is pumped into centrifuge after uniform stirring.

3. the carbide slag processing method of centrifuge according to claim 1, which is characterized in that when the slurry of stirring is in glue Body state or without obvious layering after, continue stirring until the slurry of stirring pool is evacuated；First waste liquid is drained to clearly The upside in pond flows into clear water reserviors.

4. the carbide slag processing method of centrifuge according to claim 1, which is characterized in that when the deposition in clear water reserviors The accumulation height of object is more than to carry out clearing and retrieving at the one third of depth of clear water reserviors to deposit, be thrown to slag bath It is interior.

5. a kind of electric with primary filter for implementing the processing system of any the method for claim 1-4, including for collecting The slag bath of rock ballast, in slurry the well-mixed stirring pool of moisture, for secondary filtration slurry centrifuge, be used for three-level The clear water reserviors of filtering, which is characterized in that the slag bath is equipped with the first slush pump, and the pumping material end of first slush pump is set It sets in the bottom of slag bath, the discharge end of first slush pump is connected to arrangement with the upside of stirring pool by first pipe；

The stirring pool is equipped with the second slush pump, blender and the second pipe for being passed through tap water, and described the The bottom of stirring pool is arranged in the pumping material end of two slush pumps, and the discharge end of second slush pump passes through third pipeline and centrifugation The bottom of stirring pool is arranged in machine connection, the power output end of the blender；

The clear water reserviors are equipped with centrifugal pump, and the half of the pond depth of clear water reserviors is arranged in the pumping material end of the suction pump Place, the suction pump are connected to by the 4th pipeline with production link prepared by acetylene.

6. the calcium carbide slag disposal system of centrifuge according to claim 5, which is characterized in that the first pipe, Gate valve and flowmeter are respectively equipped on second pipe, the third pipeline is equipped with regulating valve, is equipped with by the stirring pool Hygrometer；

The pumping material end of the centrifugal pump is equipped with L-shaped bend pipe, and the feed end of the bend pipe is upwardly disposed；The bend pipe Material be polyvinyl chloride.

7. the calcium carbide slag disposal system of centrifuge according to claim 5, which is characterized in that the side of the slag bath Bottom is equipped with filter opening, and the interior survey of the filter opening is equipped with inclined-plane；The downside of filter opening is arranged in the one end on the inclined-plane, described The other end on inclined-plane is set as extending obliquely upward to the opposite side of slag bath；

The outside of the filter opening is equipped with irrigation canals and ditches, and the irrigation canals and ditches are connected to arrangement with the upside of clear water reserviors；First mud The pumping material end of pump is the side arrangement for closing on filter hole.

8. the calcium carbide slag disposal system of centrifuge according to claim 7, which is characterized in that the inclined-plane and level The angle in face is set as 3 ° -5 °.

9. according to the calcium carbide slag disposal system of centrifuge described in claim 5, which is characterized in that on the 4th pipeline Equipped with filter, the filter is filter-press arrangement, and the filter is equipped with filter cloth, and the material of the filter cloth is poly- Propylene.

10. the calcium carbide slag disposal system of centrifuge according to claim 5, which is characterized in that the first pipe, Second pipe, third pipeline, the 4th pipeline material be polyvinyl chloride.