CN2527554Y - Device for removing silicon from thick oil sewage - Google Patents

Abstract

The utility model is a heavy oil sewage silicon removal device used for heavy oil sewage silicon removal in the metabolism field, the device is composed of a mixing part, a reaction part and a deposition part: the front end of the device is welded with a water inlet, a pipe static mixer is connected at the front of the inlet by a flange, a silicon removal stirrer is arranged at the right side at the front end of the device, and the left side thereof is provided with a flocculation stirrer; the bottom part of the device is provided with an orifice dredge pipe; the mixing, the reaction and the deposition parts are separated by guide plates, and the utility model solves the problem of difficult silicon removal of heavy oil sewage by connecting the three parts together organically and adopting the chemical method. The device has low cost, rather thorough reaction and good heavy oil sewage silicon removal effect by using the chemical method to remove silicon and adopting the combination of water power and machinery on the mixing and reaction of pH regulator and silicon removal agent, which has broad promotion and application prospect in the heavy oil sewage silicon removal industry.

Description

The removing silicon from thick oil sewage device

The removing silicon from thick oil sewage device that the utility model provides a kind of oil-field thick-oil sewage silica removal to use.

Produce a large amount of sewage in the oilfield process at present, how disposing polluted water in oil is reached the thermal recovery boiler water supply standard, its key is to remove silicon-dioxide, national regulation injection thermal recovery boiler feed water silicon content is less than 50mg/L, and in the oil-field thick-oil sewage dioxide-containing silica between 60--300mg/L, therefore, the silica treatment in the oilfield sewage must be arrived less than 50mg/L.In the water silicon exist form relevant with the pH value of water, when pH value is between 7-10, exist with silicate and metasilicic acid radical ion form; When pH value greater than 10 the time, exist with silicate ion.Oilfield sewage organic content height, water temperature is also high, and pH value is between 7.1-8.5, because silicon all exists with ionic forms in the condensed oil sewage, so be difficult to remove silicon in the condensed oil sewage, the at present also good without comparison silicon technology that removes.

At above-mentioned problems of the prior art, the purpose of this utility model is to develop the problem that silica removal in the condensed oil sewage is solved in a kind of oil field " removing silicon from thick oil sewage device ".

The utility model is achieved in that the removal of silicon-dioxide is that siliceous sewage is mixed with alkali in the oilfield sewage in mixing tank, make between the pH value control 9.0-11.0 in the sewage, adding the complex reaction of magnesia mixture by MgO particle or magnesium salts and water mesosilicic acid compound then makes the silicon matter in the sewage form throw out, coagulative precipitation under the effect of organic polymer coargulator again, thereby reach the purpose of silica removal, the removing silicon from thick oil sewage device has been made in design based on technique scheme, it is by mixing, reaction, precipitating three part-structures forms, pH value is regulated the mixing of part and is adopted pipeline static mixer, the speed governing stirrer is adopted in the mixing of silica removal and flocculation, the silica removal rotating speed is controlled at 500-1000 rev/min, the flocculation rotating speed is controlled at 100-500 rev/min, so just can reach mixing, the dual purpose of reaction.In the precipitation part, precipitate horizontal flow velocity in the 1-5 mm/second, set up swash plate or inclined tube in the water part.Guarantee the realization of magnesia mixture or magnesium salts silicon removing process in this device from structure, under alkaline condition, the dissolved silicon in the sewage forms the Magnesium Silicate q-agent throw out by magnesia mixture or magnesium salts reaction, removes in the settling tank by the silica removal device.The silica removal apparatus features be mix, three part-structures are organic is connected in one for reaction, precipitation, the silica removal medicament of this device is: PH conditioning agent (alkaline matter), desiliconizing agent (magnesia mixture or magnesium salts), flocculation agent (polyacrylamide), waterpower and mechanical system are adopted in the mixing of these three kinds of medicaments, reaction, and the combination of this device each several part is to reach the purpose of removing silicon from thick oil sewage.This three part-structure is made up of following each component: the mixing portion structure is by flocculation agent agitator (buncher, support shaft coupling, stir shaft, stirring) 1, speed regulating control is at 30-120r/min and silica removal agitator (with 1 bracket) 2, speed regulating control is at 60-150r/min, and water-in 11 is formed; The reactive moieties structure is to be two rows by flow deflector 3, and 5 holes of every row and perforated sludge discharge pipe 4 are formed; The precipitation part-structure is made up of three sub-districts: (one) be the sedimentation sub-district it form by inclined tube 6 and supporting plate frame 5; (2) being the overflow sub-district, is by weir 7, overflow groove 9, and water leg 8, shore pipe 10 and water outlet 12 are formed; (3) being the spoil disposal sub-district, is to be made of perforated sludge discharge pipe 4, mainly is spoil disposal, and this pipe is that dendriform is arranged, and is responsible for spacing: 600-1500mm, and a tube spacing is 200-400mm.This device is good through test effect.

The utility model compared with prior art, have with the chemical process silica removal and solved the big problem of silica removal difficulty, reach the siliceous standard that requires of thermal recovery boiler water, because the mixing of this device, react and precipitate the cost that three part organic composition one can reduce this device, in the silica removal medicament because the various piece by this device: PH conditioning agent (alkaline matter) desiliconizing agent (magnesia mixture or magnesium salts), the mixing of flocculation agent (polyacrylamide) medicament and be reflected in this device the combination of adopting waterpower and machinery, so react more thorough, removing silicon from thick oil sewage is effective.

Fig. 1 is a removing silicon from thick oil sewage device one-piece construction synoptic diagram, and 3 is flow deflectors among the figure, the 4th, and perforated sludge discharge pipe, the 6th, inclined tube, the 5th, supporting plate frame, the 7th, weir, the 8th, water leg, the 9th, overflow groove, the 10th, shore pipe, the 11st, water-in, the 12nd, water outlet.

Fig. 2 is a removing silicon from thick oil sewage device floor map.1 is the flocculation agitator among the figure, the 2nd, and silica removal agitator, the 8th, water leg, the 9th, overflow groove, the 10th, shore pipe.

Describe an embodiment in conjunction with the accompanying drawings: as can be seen from Figure 1 this device is designed to mix, reacts, precipitates three part-structures, at first buy material requested and component from market, then make by design paper, this device is formed by mixing, react, precipitate part: this device front end is welded with water-in 11, the pipeline static mixer that useful flange connects before water-in 11, be provided with silica removal agitator 2 on this device front end the right and be provided with flocculation agitator 1 on its front end left side, and be provided with perforated sludge discharge pipe 4 and shore pipe 10 in this bottom of device; With flow deflector 3 mixing, reactive moieties and precipitation are partly separated, be provided with supporting plate 5 and inclined tube 6 in this device bottom; Be provided with weir 7 and overflow groove 9 on inclined tube 6 tops, be provided with water leg 8 and water outlet 12 on this device top, inclined tube 6 is to stick with glue connection, and all the other each component are welding.After finishing mixing, reaction and precipitation three part-structures of this device are organically fused and realize, the mixing of silica removal medicament pH value conditioning agent (alkaline matter), desiliconizing agent (magnesia mixture or magnesium salts), flocculation agent (polyacrylamide) medicament, reaction adopt waterpower and mechanical bond just can finish the purpose of removing silicon from thick oil sewage, reach silicon-dioxide control water quality standard in the steam injection thermal recovery boiler feed water.In the mixing portion structure, it is to adopt pipeline static mixer that the adjusting of pH value mixes, it is to adopt flocculation agitator (buncher that silica removal and flocculation mix, support, shaft coupling, stir shaft, stirring arm) 1, speed regulating control also has water-in 11 at 30-120r/min and silica removal agitator (with in 1 bracket) 2 speed regulating control at 60-150r/min.The reactive moieties structure is to be 5 holes of the two every rows of row by the flow deflector 3 that No. 20 steel are made, and the aperture is that 10-40mm (by flow, flow velocity calculating) makes perforated sludge discharge pipe 4 again; The precipitation bilge construction is made up of three sub-districts; (1) be the sedimentation sub-district it by inclined tube 6 pitch angle be 60 the degree, diameter is 60-100mm, remakes resting support 5; (2) be the overflow sub-district it be by weir 7, overflow groove 9, water leg 8, shore pipe 10 and water outlet 12 formed; (3) be the spoil disposal sub-district, it is provided with perforated sludge discharge pipe 10, and it mainly is a spoil disposal, and this pipe is to arrange with dendriform, and person in charge's spacing is 600-1500rmm, and a tube spacing is 200-400mm.Above-mentioned three part-structures are assembled the removing silicon from thick oil sewage device by schema is organic.

Claims (1)

1, the removing silicon from thick oil sewage device used of a kind of oil-field thick-oil sewage silica removal is characterized in that:

A, this device is formed by mixing, react, precipitate part: this device front end is welded with water-in (11), at the preceding pipeline static mixer that connects with flange of water-in (11), be provided with silica removal agitator (2) on this device front end the right and be provided with flocculation agitator (1) on its front end left side, and be provided with perforated sludge discharge pipe (4) and shore pipe (10) in this bottom of device; With flow deflector (3) mixing, reactive moieties and precipitation are partly separated, be provided with supporting plate frame (5) and inclined tube (6) in this device bottom; Be provided with weir (7) and overflow groove (9) on inclined tube (6) top, be provided with water leg (8) and water outlet (12) on this device top, inclined tube (6) is to stick with glue connection, and all the other each component are welding, and organic the fusing of each component of this device realized removing silicon from thick oil sewage;

B, the flow deflector in the reactive moieties structure (3) is to make with steel plate, is two rows, 5 holes of every row, the aperture is 10-40mm;

C, inclined tube (6) pitch angle in the precipitation part-structure is 60 degree, and diameter is 60-100mm, and the horizontal flow velocity of precipitation is the 1-5 mm/second, and perforated sludge discharge pipe is to arrange with dendriform, 600-1500mm between the person in charge, a tube spacing is 200-400mm.

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