CN104232805A - Quick sulfurous-method alkaline mixed juice floating and cleaning device and process used in sugar refinery - Google Patents

Quick sulfurous-method alkaline mixed juice floating and cleaning device and process used in sugar refinery Download PDF

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Publication number
CN104232805A
CN104232805A CN201410523693.2A CN201410523693A CN104232805A CN 104232805 A CN104232805 A CN 104232805A CN 201410523693 A CN201410523693 A CN 201410523693A CN 104232805 A CN104232805 A CN 104232805A
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China
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juice
order reaction
reaction case
floating
silica frost
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梁积勋
韦锦然
韦桂香
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NANNING JIRAN SUGAR TECHNOLOGY CO LTD
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NANNING JIRAN SUGAR TECHNOLOGY CO LTD
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Abstract

The invention discloses a quick sulfurous-method alkaline mixed juice floating and cleaning device used in a sugar refinery. The quick sulfurous-method alkaline mixed juice floating and cleaning device is characterized by comprising a primary reaction box, a secondary reaction box and a quick floatation device which are sequentially connected, wherein the floatation device comprises a floatation device barrel body, a fed juice distribution system, a mixed clear juice collecting system and a residue scraping and discharging system, the fed juice distribution system is arranged in the middle of the floatation device barrel body, the outer side of the lower portion of the fed juice distribution system is connected with the residue scraping and discharging system, and the outer side of the upper portion of the fed juice distribution system is connected with the mixed clear juice collecting system. The process for preparing clear juice by utilizing the device comprises the steps of 1 preliming, namely adjusting a pH value to range from 7.0 to 7.5; 2 performing primary heating to enable the temperature to range from 60 DEG C to 65 DEG C; 3 liming, namely adjusting the pH value to range from 8.0 to 8.5; 4 making bubbles; 5 performing floating separation by means of the floatation device. By means of the quick sulfurous-method alkaline mixed juice floating and cleaning device and process, the cane juice standing time is shortened through the quick floatation device, and the quality of finished sugar product is ensured. In addition, the quick sulfurous-method alkaline mixed juice floating and cleaning device and process has the advantages of being simple, simple and convenient to operate and low in production cost.

Description

Sugar refinery sulfurous method alkalescence mixing juice floating upward quickly cleaning device and technique
Technical field
Patent of the present invention relates to a kind of sugar industry production technology and equipments, especially a kind of cane sugar factory sulfurous method alkalescence mixing juice floating upward quickly cleaning device and production technique thereof.
Background technology
From the initial stage eighties, the ground such as China Guangdong start the experimental study of syrup floating technology, are mainly used in raw sugar slurry back dissolving floating technique, achieve good result, significantly reduce the sulphur content of white sugar.In recent years, the phosphorus technology of floating researched and developed voluntarily by China have also been obtained application, not only increases quality product, has also played vital role for carbon method sugar refinery reduces filter mud quantity discharged and reduce environmental pollution.But these floating technology still have its weak point, as automatically controlled inadequate coordination, cause the parameter such as technic index and Liquid level unstable; The flocculating agent molecule amount used is lower, and floating effect is bad.
Some open source literatures also report syrup floating clarify process Technology and method in recent years, as Chinese patent: low temperature processing technique for sugar mill mixing liquor by sulfurous acid method, and Chinese Patent Application No.: 200710201374.X; Chinese patent: low-temp phosphorus floatation method purification process for sugar juice and method, Chinese Patent Application No.: 00114236.4; Chinese patent: a kind of method of sugar juice air-float clearing, Chinese Patent Application No.: 200810073620.2 etc.Sugarcane juice low-temp phosphorus floatation method principal feature is: at lower temperature (45 ~ 60 DEG C), carry out fast (10 ~ 12 minutes elapsed time) floating clear process to sugarcane juice, become scum silica frost although the impurity in mixing juice can condense and be separated removing, obtain the second best in quality mixed clear juice, but " low-temp phosphorus floatation method " remains in following problem in implementation process: 1, under low temperature, sugarcane juice very easily ferments, and the sediment accumulation bottom traditional floating device, increase the weight of again this negative effect; 2, low temperature scum silica frost viscosity greatly, extremely sad filter.
In addition, the domestic study general to mixing juice floating clarify process technology concentrates in production technique, and often have ignored the upgrading of equipment is improved, especially the floating device that in this production technique, one of them important dissolved air flotation step adopts, what most sugar refinery were applied is single layer cylinder shape floating device, its working process is: inflated and the syrup that adds flocculation agent enters the flocculating chamber at center, and in flocculating chamber, syrup mixes with flocculation agent and produces throwing out.Centre chamber exit has sleeve to play shock absorption, syrup is to outflow, enter the annular space between body outer wall and centre chamber, this place is buoyance lift disengaging zone, and scum silica frost upwards shifts to top and concentrates gradually, and the ash pit that the scraper plate be rotated slowly subsequently outwards dials out to annular flows out, mixed clear juice is then to dirty, bottom makes clear liquid area, and focus on spill box by annular porous pipe and discharge, the subject matter that this floating device exists is: the residence time is long.
As fully visible, blank is remained in conjunction with the research in equipment technology at sulfitation sugar mill in mixing juice floating technique, patent of the present invention is exactly study the sulfurous method mixing juice alkalescence peace and quiet technology that floats in this context, develops the equipment flow process that floating upward quickly under a kind of applicable mixing juice alkaline process condition is peace and quiet.
Summary of the invention
The object of patent of the present invention is to provide a kind of sulfurous method alkalescence mixing juice floating upward quickly cleaning technique and equipment, effectively can suppress mixing juice fermentation, sugared part Transformation Phenomenon, reduce intensity of sulfitation, improve the quality product in floatation and clarification effect and sugar refinery.
For achieving the above object, technical scheme of the present invention is:
A kind of sugar refinery sulfurous method alkalescence mixing juice floating cleaning device, is characterized in that:
Comprise the first order reaction case, second order reaction case and the floating upward quickly device that are connected successively, wherein: described floating upward quickly device comprises floating device cylindrical shell, enters juice distribution system, mixes clear juice gathering system and scrape slag dreg removing system, the centre of floating device cylindrical shell is provided with into juice distribution system, the lower outside entering juice distribution system is connected with scrapes slag dreg removing system, and upper outside is connected with mixed clear juice gathering system.
Described enter juice distribution system comprise juice feeding tube, inner core, upper juice overflow port, juice-blocking ring plate and back up pad, described juice feeding tube is located at the bottom of floating device cylindrical shell, juice feeding tube is connected with the inner core be located in the middle of floating device cylindrical shell, juice overflow port is provided with above inner core, the top of upper juice overflow port is provided with juice-blocking ring plate, and juice-blocking ring plate is fixed by the back up pad above upper juice overflow port.
Described mixed clear juice gathering system comprises square juice ejecting groove, juice yield tube, syrup row bottom tube, level control box and self-adjustable phosphoric acid interpolation mechanism, square juice ejecting groove is located at the bottom of floating device cylindrical shell, be connected with the U-shaped juice yield tube be arranged on outside floating device cylindrical shell below square juice ejecting groove, syrup row bottom tube is provided with below juice yield tube, the other end of juice yield tube is connected with level control box, the self-adjustable phosphoric acid that is connected with above of described level control box adds mechanism, is connected below with juice yield tube.
Described slag dreg removing system of scraping comprises scum silica frost annular groove, mud scraping rod arm, cleaning shoe, agitator motor, scraper plate, scraper plate lever arm, scum pipe and scum silica frost resistance cyclone, described scraper plate lever arm is arranged on the top of floating device cylindrical shell, driven by the agitator motor being arranged on floating device cylindrical shell end face, scraper plate lever arm is provided with scraper plate, the scum silica frost annular groove of annular is provided with outside scraper plate, the side of scum silica frost annular groove is connected with scum pipe, described scum silica frost resistance cyclone comprises some blocks of trapezoidal steel plates, be welded on the height location of floating device cylinder inboard wall scum layer trapezoidal steel plate uniform intervals, the bottom of floating device cylindrical shell is provided with mud scraping rod arm, mud scraping rod arm is connected with scraper plate lever arm by union lever, mud scraping rod arm is provided with cleaning shoe.
Described first order reaction case comprises first order reaction case tank body, first order reaction case agitator motor, first order reaction case stir shaft, first order reaction case juice feeding tube and first order reaction case juice yield tube, first order reaction case tank body end face is provided with first order reaction case agitator motor, first order reaction case agitator motor is connected with first order reaction case stir shaft, first order reaction case stir shaft vertically stretches in first order reaction case tank body, and first order reaction case stir shaft is provided with paddle; One side bottom of first order reaction case tank body is provided with first order reaction case juice feeding tube, is provided with first order reaction case juice yield tube in the middle part of opposite side; First order reaction case inner tank wall is provided with spiral board; The top of first order reaction case tank body is also provided with self-adjustable automatic liming apparatus.
Described second order reaction case comprises second order reaction case tank body, mechanical whisking machine, second order reaction case stir shaft, second order reaction case juice feeding tube and second order reaction case juice yield tube, wherein: second order reaction case tank body end face is provided with mechanical whisking machine, machinery whisking machine is connected with second order reaction case stir shaft, second order reaction case stir shaft vertically stretches in second order reaction case tank body, and second order reaction case stir shaft is provided with impeller; Second order reaction case tank body one side bottom is provided with second order reaction case juice feeding tube, is provided with second order reaction case juice yield tube in the middle part of opposite side, and second order reaction case juice yield tube is provided with pipeline flocculation agent automatic adding machine structure.
Utilize a technique for the mixed clear juice of described sugar refinery sulfurous method alkalescence mixing juice floating cleaning device preparation, it is characterized in that comprising the following steps:
(1) grey in advance: in the mixing juice squeezed out, to add phosphoric acid and lime milk solution, mixing juice pH value is adjusted to 7.0 ~ 7.5;
(2) one-level heating: go heater heats to 60 ~ 65 DEG C mixing juice pump;
(3) ash is added: the mixing juice after one-level heating is sent into first order reaction case secondary adds grey adjust ph to 8.0 ~ 8.5, obtains alkaline mixing juice;
(4) system bubble: alkaline mixing juice enters floating second order reaction case and gets blisters through mechanical whisking machine, then enters floating upward quickly device after adding flocculation agent in pipeline flocculation agent automatic adding machine structure;
(5) dissolved air flotation: carry out floating and be separated in floating upward quickly device, the scum silica frost risen is by skim, the mixed clear juice that settles down goes out juice from floating upward quickly device level control box, phosphoric acid adjust pH to 7.0 ~ 7.2 are added when going out juice, then send to Sulphitation and Neutralization, after scum silica frost drains into mud juice blending bin, pump is toward filtration device process.
In described step (3), the addition of flocculation agent is 3 ~ 5ppm.
In described step (5), when carrying out floating separation in floating upward quickly device, the scum silica frost floated after being separated floats, scum layer is formed on floating upward quickly device surface, scraper plate lever arm is driven to rotate by agitator motor, generation scum layer strikes off in scum silica frost annular groove by the scraper plate be connected with scraper arm, after collecting scum silica frost, drains through scum pipe by scum silica frost annular groove; Mixed clear juice enters in the square juice ejecting groove of floating upward quickly device cylinder body bottom, and is entered in level control box by syrup row bottom tube and go out juice.
Beneficial effect of the present invention is used to be:
1, under slight alkalinity, more non-saccharide can be divided cohesion removing by process, improves mixing juice purity, reduces sucrose inversion, reduces syrup colour and opacity;
2, add phosphoric acid again after removing more non-sugar, the performance of calcium phosphate adsorption bleaching turbidity removal can be played preferably;
3, ensure commerieal sugar quality, reduce Vanadium Pentoxide in FLAKES residual quantity in syrup;
4, reduce the incrustation of the equipment such as evaporating pot, improve heat conductive efficiency, reduce energy consumption;
5, reduce intensity of sulfitation, reduce the loss of sugared part, conservation consumption;
6, technique is simple, and easy and simple to handle, production cost is low;
7, mixed juice floating ascent rate is fast, and mixed clear juice quality is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of floating upward quickly device;
Fig. 2 is the structural representation of first order reaction case;
Fig. 3 is the structural representation of second order reaction case;
Fig. 4 is the peace and quiet equipment flowsheet of sugar refinery sulfurous method alkalescence mixing juice floating upward quickly;
Fig. 5 is the process diagram that sugar refinery peace and quiet preparation of sulfurous method alkalescence mixing juice floating upward quickly mixes clear juice.
In figure, self-adjustable phosphoric acid adds mechanism 1, level control box 2, scum silica frost annular groove 3, mud scraping rod arm 4, cleaning shoe 5, inner core 6, upper juice overflow port 7, agitator motor 8, juice-blocking ring plate 9, back up pad 10, scraper plate 11, scraper plate lever arm 12, scum silica frost resistance fine jade device 13, scum pipe 14, square juice ejecting groove 15, juice feeding tube 16, syrup row bottom tube 17, juice yield tube 18, floating device cylindrical shell 19, self-adjustable automatic liming apparatus 20, first order reaction case stir shaft 21, spiral board 22, first order reaction case juice feeding tube 23, first order reaction case agitator motor 24, first order reaction case tank body 25, first order reaction case juice yield tube 26, paddle 27, second order reaction case tank body 28, second order reaction case stir shaft 29, second order reaction case juice feeding tube 30, machinery whisking machine 31, pipeline flocculation agent automatic adding machine structure 32, second order reaction case juice yield tube 33, impeller 34, milk of lime bucket 35, flocculation agent case 36, phosphoric acid case 37, first order reaction case enters juice pH value detector 38, second order reaction case goes out juice pH value detector 39, mixed clear juice pH value detector 40, well heater 41, mixed juice case self-adjustable phosphoric acid adds mechanism 42, mixed juice case self-adjustable automatic liming apparatus 43, squeezing mixed juice case 44, mud juice blending bin 45, mixed juice case 46.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Sugar refinery of the present invention sulfurous method alkalescence mixing juice floating cleaning device, comprise the first order reaction case, second order reaction case and the floating upward quickly device that are connected successively, wherein: floating upward quickly device comprises floating device cylindrical shell 19, enters juice distribution system, mixes clear juice gathering system and scrape slag dreg removing system as described in Figure 1, the centre of floating device cylindrical shell is provided with into juice distribution system, the lower outside entering juice distribution system is connected with scrapes slag dreg removing system, and upper outside is connected with mixed clear juice gathering system.
As shown in Figure 2, first order reaction case comprises first order reaction case tank body 25, first order reaction case agitator motor 24, first order reaction case stir shaft 21, first order reaction case juice feeding tube 23 and first order reaction case juice yield tube 26, first order reaction case tank body 25 end face is provided with first order reaction case agitator motor 24, first order reaction case agitator motor 24 is connected with first order reaction case stir shaft 21, first order reaction case stir shaft 21 vertically stretches in first order reaction case tank body 25, and first order reaction case stir shaft 21 is provided with paddle 27; One side bottom of first order reaction case tank body 25 is provided with first order reaction case juice feeding tube 23, is provided with first order reaction case juice yield tube 26 in the middle part of opposite side; First order reaction case tank body 25 inwall is provided with spiral board 22; The top of first order reaction case tank body 25 is also provided with self-adjustable automatic liming apparatus 20.Wherein self-adjustable automatic liming apparatus 20 according to the real time data of pH value detector, can judge fast and accurately, meets the processing condition needed for producing; Spiral board 22 and whipping appts and first order reaction case agitator motor 24, first order reaction case stir shaft 21, paddle 22 Main Function are make mixing juice and milk of lime rapid reaction, and play the performance of calcium phosphate adsorption bleaching, reduce the sugarcane juice residence time.
As shown in Figure 3, second order reaction case comprises second order reaction case tank body 28, mechanical whisking machine 31, second order reaction case stir shaft 29, second order reaction case juice feeding tube 30 and second order reaction case juice yield tube 33, wherein: second order reaction case tank body 28 end face is provided with mechanical whisking machine 31, machinery whisking machine 31 is connected with second order reaction case stir shaft 29, second order reaction case stir shaft 29 vertically stretches in second order reaction case tank body 28, and second order reaction case stir shaft 29 is provided with impeller 34; Second order reaction case tank body 28 1 side bottom is provided with second order reaction case juice feeding tube 30, is provided with second order reaction case juice yield tube 33 in the middle part of opposite side, and second order reaction case juice yield tube 33 is provided with pipeline flocculation agent automatic adding machine structure 32.Wherein mechanical whisking machine 31 utilizes the high speed rotating of motor, and while stirring sugarcane juice, impeller 34 rotates and forms micro-bubble, and microbubble well can adhere to each other with calcium phosphate floss; Pipeline flocculation agent automatic adding machine structure 32, according to mixing juice real-time traffic, controls the addition of flocculation agent automatically.
The juice distribution system that enters of floating device comprises juice feeding tube 16, inner core 6, upper juice overflow port 7, juice-blocking ring plate 9 and back up pad 10, described juice feeding tube 16 is located at the bottom of floating device cylindrical shell 19, juice feeding tube 16 is connected with the inner core 6 be located in the middle of floating device cylindrical shell 19, inner core 6 is provided with juice overflow port 7 above, the top of upper juice overflow port 7 is provided with juice-blocking ring plate 9, and juice-blocking ring plate 9 is fixed by the back up pad 10 above upper juice overflow port 7.After mixing juice enters inner core 6 by juice feeding tube 16, enter floating device after distributing by upper juice overflow port 7, juice-blocking ring plate 9 and float.
The mixed clear juice gathering system of floating device comprises square juice ejecting groove 15, juice yield tube 18, syrup row bottom tube 17, level control box 2 and self-adjustable phosphoric acid interpolation mechanism 1, square juice ejecting groove 15 is located at the bottom of floating device cylindrical shell 19, be connected with the U-shaped juice yield tube 18 be arranged on outside floating device cylindrical shell 19 below square juice ejecting groove 15, syrup row bottom tube 15 is provided with below juice yield tube 18, the other end of juice yield tube 18 is connected with level control box 2, and the self-adjustable phosphoric acid that is connected with above of level control box 2 adds mechanism 1.The mixed clear juice floated after being separated is collected through square juice ejecting groove 15, then enters level control box 2 by juice yield tube 18, adds mechanism 1 automatic powder adding add phosphoric acid in level control box 2 by self-adjustable phosphoric acid.Add mechanism 1 owing to being designed with self-adjustable phosphoric acid, neutralize more than once absorption turbidity removal process again from the mixed clear juice phosphoric acid of floating upward quickly device alkalescence out, ensure that peace and quiet effect.
The slag dreg removing system of scraping of floating device comprises scum silica frost annular groove 3, mud scraping rod arm 4, cleaning shoe 5, agitator motor 8, scraper plate 11, scraper plate lever arm 12, scum pipe 14 and scum silica frost resistance cyclone 13, described scraper plate lever arm 12 is arranged on the top of floating device cylindrical shell 19, driven by the agitator motor 8 being arranged on floating device cylindrical shell 19 end face, scraper plate lever arm 12 is provided with scraper plate 11, the scum silica frost annular groove 3 of annular is provided with outside scraper plate 11, the side of scum silica frost annular groove 3 is connected with scum pipe 14, scum silica frost resistance cyclone 13 comprises some blocks of trapezoidal steel plates, be welded on the height location of floating device cylindrical shell 19 inwall scum layer trapezoidal steel plate uniform intervals, the bottom of floating device cylindrical shell 19 is provided with mud scraping rod arm 4, mud scraping rod arm 4 is connected with scraper plate lever arm 12 by union lever, mud scraping rod arm 4 is provided with cleaning shoe 5.The scum silica frost floated after being separated floats, form scum layer on floating device surface, drive scraper plate lever arm 12 to rotate by agitator motor 8, generation scum layer strikes off into scum silica frost annular groove 3 by the scraper plate 11 be connected with scraper arm, after collecting scum silica frost by scum silica frost annular groove 3, drain through scum pipe 14.Be connected with scraper plate lever arm 12 mud juice Scraping device mud scraping rod arm 4, cleaning shoe 5, and purpose of design avoids the mud juice of sedimentation to accumulate at the cone end, because of residence time souring of fermenting for a long time, causes sugared part to transform loss.The scum silica frost resistance cyclone 13 of design, the height location being welded in floating device cylindrical shell 19 inwall scum layer is uniformly distributed primarily of some blocks of trapezoidal steel plates, the preferred quantity of steel plate is 8, its role is to stop floating upward quickly device scum silica frost in operational process to rotate along with scraper plate 11, cause deslagging thoroughly not make scum silica frost fermentation souring, sugar transition loses.
Adopting above equipment to prepare the technique of mixed clear juice, shown in composition graphs 4 and Fig. 5, is comprise the following steps:
(1) grey in advance: in the mixing juice squeezed out, to add phosphoric acid and lime milk solution, mixing juice pH value is adjusted to 7.0 ~ 7.5;
(2) one-level heating: go well heater 41 to be heated to 60 ~ 65 DEG C mixing juice pump;
(3) ash is added: the mixing juice after one-level heating is sent into first order reaction case secondary adds grey adjust ph to 8.0 ~ 8.5, obtains alkaline mixing juice;
(4) system bubble: alkaline mixing juice enters floating second order reaction case and gets blisters through mechanical whisking machine 31, then enters floating upward quickly device after adding flocculation agent in pipeline flocculation agent automatic adding machine structure 32;
(5) dissolved air flotation: carry out floating and be separated in floating upward quickly device, the scum silica frost risen is by skim, the mixed clear juice that settles down goes out juice from floating upward quickly device level control box 2, phosphoric acid adjust pH to 7.0 ~ 7.2 are added when going out juice, then send to Sulphitation and Neutralization, after scum silica frost drains into mud juice blending bin 45, pump is toward filtration device process.
The detailed process of step (1) is: after pumping into squeezing mixed juice case 44 from squeezing machine mixing juice out, mixed juice case self-adjustable automatic liming apparatus 43 and mixed juice case self-adjustable phosphoric acid add mechanism 42 enters the mixing juice that juice pH value detector 37 detects real-time pH value according to first order reaction case, automatically from milk of lime bucket 35, milk of lime and phosphoric acid solution is pumped in phosphoric acid case 37, add in squeezing mixed juice case 44, phosphoric acid generates calcium phosphate flocks with milk of lime reaction, absorption colloid, the impurity such as pigment, be conducive to mixing juice precipitation, thus mixing juice pH value is adjusted to 7.0 ~ 7.5.
The detailed process of described step (3) is: self-adjustable automatic liming apparatus 20 receives the signal that second order reaction case goes out juice pH value detector 39, and secondary adds grey adjust ph to 8.0 ~ 8.5, obtains alkaline mixing juice.Under alkaline case, be conducive to removing charged colloidal particle, ash content and decompose nitrogenous thing, and CaSO 3now precipitate comparatively complete, soluble calcium salt and SO can be reduced 2residual quantity.
The detailed process of described step (4) is: alkaline mixing juice is after mechanical whisking machine 30 is got blisters, pipeline flocculation agent automatic adding machine structure 32, according to alkaline mixing juice flow, just enters in floating upward quickly device after the flocculation agent pumping 3 ~ 5ppm adds pipeline from flocculation agent case 36.
The detailed process of described step (5) is: in floating upward quickly device, bagasse chaff in mixing juice, cerosin, starch and the cohesion of other organic non-sugars of part are together, rise and become scum silica frost and by skim, obtain substantially clear and that purity is higher mixed clear juice, scum silica frost drives scraper plate lever arm 12 to rotate by agitator motor 8, generation scum silica frost strikes off in scum silica frost annular groove 3 by the scraper plate 11 be connected with scraper plate lever arm 12, after collecting scum silica frost, drains through scum pipe 14 by scum silica frost annular groove 3; Mixed clear juice enters in the square juice ejecting groove 15 bottom floating upward quickly device cylindrical shell 19, and entered in level control box 2 by juice yield tube 18 and go out juice, when mixed clear juice goes out juice from floating upward quickly device level control box 2, self-adjustable phosphoric acid adds automatic adjust ph to 7.0 ~ 7.2 of mechanism 1, and detected by mixed clear juice pH value detector 40, to regulate the addition of phosphoric acid according to detected value, mixed clear juice enters in mixed juice case 46, finally send to Sulphitation and Neutralization, after scum silica frost drains into mud juice blending bin 45, pump is toward filtration device process.
Advantage of the present invention is:
(1) micro-bubble adopting the mechanical whisking machine 31 of second order reaction case to get, the bubble volume of relatively common whisking machine is large, quantity is many, the sugarcane juice making to enter in this floating device is individual large, related floating power is large, thus it is faster to make the floating device in the present invention compare other floating device ascent rates, when realizing floating upward quickly, mixed clear juice quality is good.
(2) be designed with mud juice Scraping device, avoid the mud juice of sedimentation to accumulate and bore the end at floating device cylindrical shell 19, because of residence time souring of fermenting for a long time, cause sugared part to transform loss.
(3) be designed with scum silica frost resistance fine jade device 13, stop scum silica frost in the operational process of floating upward quickly device to rotate along with scraper plate 11, cause deslagging thoroughly not make scum silica frost fermentation souring, sugar transition loses.
It is as follows that the equipment combined process gained of the present embodiment mixes clear juice every detection data:
Date Mixing juice brix ( Bx) Mixed clear juice PH Mixing juice purity (AP) Mixed purity of clear juice (AP) Clear mixed juice purity difference Mixed color value of clear juice (IU)
2014.1.9 16.32 7.12 82.5 84.02 1.52 2521.36
2014.1.10 16.48 7.2 82.16 83.93 1.77 2803.58
2014.1.11 16.15 7.17 83.59 85.43 1.84 2751.47
2014.1.12 16.28 7.12 84.26 86.17 1.91 2912.25
2014.1.13 16.59 7.15 84.6 86.28 1.68 2630.48
2014.1.14 16.98 7.09 84.84 86.74 1.9 2598.17
2014.1.15 16.37 7.18 84.18 85.85 1.67 2834.2
2014.1.16 16.62 7.14 85.24 86.79 1.55 2545.89
2014.1.17 16.24 7.16 84.32 85.94 1.62 2671.68
2014.1.18 16.73 7.13 83.57 85.46 1.89 2833.45
On average 16.48 7.15 83.93 85.66 1.74 2710.25

Claims (9)

1. sugar refinery sulfurous method alkalescence mixing juice floating cleaning device, it is characterized in that: comprise the first order reaction case, second order reaction case and the floating upward quickly device that are connected successively, wherein: described floating upward quickly device comprises floating device cylindrical shell (19), enters juice distribution system, mixes clear juice gathering system and scrape slag dreg removing system, the centre of floating device cylindrical shell is provided with into juice distribution system, the lower outside entering juice distribution system is connected with scrapes slag dreg removing system, and upper outside is connected with mixed clear juice gathering system.
2. sugar refinery according to claim 1 sulfurous method alkalescence mixing juice floating cleaning device, it is characterized in that: described in enter juice distribution system and comprise juice feeding tube (16), inner core (6), upper juice overflow port (7), juice-blocking ring plate (9) and back up pad (10), described juice feeding tube (16) is located at the bottom of floating device cylindrical shell (19), juice feeding tube (16) is connected with the inner core (6) be located in the middle of floating device cylindrical shell (19), inner core (6) is provided with juice overflow port (7) above, the top of upper juice overflow port (7) is provided with juice-blocking ring plate (9), juice-blocking ring plate (9) is fixed by the back up pad (10) above upper juice overflow port (7).
3. sugar refinery according to claim 1 sulfurous method alkalescence mixing juice floating cleaning device, is characterized in that:
Described mixed clear juice gathering system comprises square juice ejecting groove (15), juice yield tube (18), syrup row's bottom tube (17), level control box (2) and self-adjustable phosphoric acid add mechanism (1), square juice ejecting groove (15) is located at the bottom of floating device cylindrical shell (19), below square juice ejecting groove (15) be arranged on floating device cylindrical shell (19) juice yield tube outward (18) and be connected, syrup row's bottom tube (15) is provided with below juice yield tube (18), the other end of juice yield tube (18) is connected with level control box (2), the self-adjustable phosphoric acid that is connected with above of described level control box (2) adds mechanism (1), be connected with juice yield tube (18) below.
4. sugar refinery according to claim 1 sulfurous method alkalescence mixing juice floating cleaning device, is characterized in that:
Described slag dreg removing system of scraping comprises scum silica frost annular groove (3), mud scraping rod arm (4), cleaning shoe (5), agitator motor (8), scraper plate (11), scraper plate lever arm (12), scum pipe (14) and scum silica frost resistance cyclone (13), described scraper plate lever arm (12) is arranged on the top of floating device cylindrical shell (19), driven by the agitator motor (8) being arranged on floating device cylindrical shell (19) end face, scraper plate lever arm (12) is provided with scraper plate (11), scraper plate (11) outside is provided with the scum silica frost annular groove (3) of annular, the side of scum silica frost annular groove (3) is connected with scum pipe (14), described scum silica frost resistance cyclone (13) comprises some blocks of trapezoidal steel plates, be welded on the height location of floating device cylindrical shell (19) inwall scum layer trapezoidal steel plate uniform intervals, the bottom of floating device cylindrical shell (19) is provided with mud scraping rod arm (4), mud scraping rod arm (4) is connected with scraper plate lever arm (12) by union lever, mud scraping rod arm (4) is provided with cleaning shoe (5).
5. sugar refinery according to claim 2 sulfurous method alkalescence mixing juice floating cleaning device, is characterized in that:
Described first order reaction case comprises first order reaction case tank body (25), first order reaction case agitator motor (24), first order reaction case stir shaft (21), first order reaction case juice feeding tube (23) and first order reaction case juice yield tube (26), first order reaction case tank body (25) end face is provided with first order reaction case agitator motor (24), first order reaction case agitator motor (24) is connected with first order reaction case stir shaft (21), first order reaction case stir shaft (21) vertically stretches in first order reaction case tank body (25), and first order reaction case stir shaft (21) is provided with paddle (27); One side bottom of first order reaction case tank body (25) is provided with first order reaction case juice feeding tube (23), is provided with first order reaction case juice yield tube (26) in the middle part of opposite side; First order reaction case tank body (25) inwall is provided with spiral board (22); The top of first order reaction case tank body (25) is also provided with self-adjustable automatic liming apparatus (20).
6. sugar refinery according to claim 1 sulfurous method alkalescence mixing juice floating cleaning device, it is characterized in that: described second order reaction case comprises second order reaction case tank body (28), machinery whisking machine (31), second order reaction case stir shaft (29), second order reaction case juice feeding tube (30) and second order reaction case juice yield tube (33), wherein: second order reaction case tank body (28) end face is provided with mechanical whisking machine (31), machinery whisking machine (31) is connected with second order reaction case stir shaft (29), second order reaction case stir shaft (29) vertically stretches in second order reaction case tank body (28), second order reaction case stir shaft (29) is provided with impeller (34), second order reaction case tank body (28) one side bottom is provided with second order reaction case juice feeding tube (30), is provided with second order reaction case juice yield tube (33) in the middle part of opposite side, and second order reaction case juice yield tube (33) is provided with pipeline flocculation agent automatic adding machine structure (32).
7. utilize a technique for the mixed clear juice of sugar refinery sulfurous method alkalescence mixing juice floating cleaning device preparation as claimed in claim 1, it is characterized in that comprising the following steps:
(1) grey in advance: in the mixing juice squeezed out, to add phosphoric acid and lime milk solution, mixing juice pH value is adjusted to 7.0 ~ 7.5;
(2) one-level heating: go well heater (41) to be heated to 60 ~ 65 DEG C mixing juice pump;
(3) ash is added: the mixing juice after one-level heating is sent into first order reaction case secondary adds grey adjust ph to 8.0 ~ 8.5, obtains alkaline mixing juice;
(4) system bubble: alkaline mixing juice enters floating second order reaction case and gets blisters through mechanical whisking machine (31), then enters floating upward quickly device after adding flocculation agent in pipeline flocculation agent automatic adding machine structure (32);
(5) dissolved air flotation: carry out floating and be separated in floating upward quickly device, the scum silica frost risen is by skim, the mixed clear juice that settles down goes out juice from floating upward quickly device level control box (2), phosphoric acid adjust pH to 7.0 ~ 7.2 are added when going out juice, then send to Sulphitation and Neutralization, scum silica frost drain into mud juice blending bin (45) afterwards pump toward filtration device process.
8. sugar refinery according to claim 7 sulfurous method alkalescence mixing juice floating cleaning technique, is characterized in that:
In described step (4), the addition of flocculation agent is 3 ~ 5ppm.
9. sugar refinery according to claim 7 sulfurous method alkalescence mixing juice floating cleaning technique, is characterized in that:
In described step (5), when carrying out floating separation in floating upward quickly device, the scum silica frost floated after being separated floats, scum layer is formed on floating upward quickly device surface, scraper plate lever arm (12) is driven to rotate by agitator motor (8), generation scum layer strikes off in scum silica frost annular groove (3) by the scraper plate (11) be connected with scraper plate lever arm (12), after collecting scum silica frost, drains through scum pipe (14) by scum silica frost annular groove (3); Mixed clear juice enters in the square juice ejecting groove (15) of floating upward quickly device cylindrical shell (19) bottom, and is entered in level control box (2) by juice yield tube (18) and go out juice.
CN201410523693.2A 2014-10-08 2014-10-08 Quick sulfurous-method alkaline mixed juice floating and cleaning device and process used in sugar refinery Pending CN104232805A (en)

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CN110731434B (en) * 2019-11-26 2024-01-30 广西叶茂机电自动化有限责任公司 Pretreatment system and pretreatment process before cane juice film passing

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