A kind of multistage combined phosphorous slurry recovery system
Technical field
This utility model relates to technical field of phosphorous chemical industry, is specifically related to the processing means of a kind of phosphorous garbage.
Background technology
Yellow phosphorus can produce such as the poisonous and harmful substances such as mud phosphorus, yellow phosphoric tail gas in process of production, and from the point of view of recycling economy, these materials are all useful side-products.The particularly recovery of mud phosphorus both can realize energy-saving and emission-reduction, economizes on resources and can reduce the pollution to environment of the mud phosphorus, being significant.
The recycling of mud phosphorus, will accomplish the pollution both having eliminated mud phosphorus to environment, can turn waste into wealth again, create the wealth for enterprise.The method reclaiming phosphorus at present from mud phosphorus generally can be divided into two kinds, the first direct method, i.e. steaming phosphorus method, chemical reaction and Filtration etc.: the second indirect method, i.e. the process of antacid method, alkali and alkali oxide facture etc..
Such as " utilize electric furnace yellow phosphorus exhaust heating from phosphorous slurry recovery yellow phosphorus unit 201020174175.1 ", structure includes dry blowing device and receives phosphorus device, described dry blowing device includes kettle, dry blowing main shaft, phosphorus transporting pipe road, described receipts phosphorus device includes collecting phosphorus pot, it is characterized in that: also include tail gas burner, having combustor at kettle, the burner of combustor connects Yellow Phosphorous Plant exhaust pipe.This technical scheme have employed steaming phosphorus method and carries out phosphorous slurry recovery, it is substantially and follows heating dry blowing, the thinking of condensation recovery, configure two collection phosphorus crucibles 10 even more than series connection and carry out yellow phosphorus collection, but this traditional mud phosphorus dry blowing reclaimer exist of both problem.
Exhaust emissions problem, phosphorus steam relies on merely the hot water rinsing condensation in collection phosphorus crucible to reclaim, and the mixability of gas and liquid is low, which results in hot water and condenses not exclusively to the rinsing of phosphorus steam, and the gas of final discharge has greater environmental impacts.
Device security and cost of investment problem, also for improving the response rate, the collection phosphorus crucible therefore adding multiple series connection carries out yellow phosphorus collection, commercial production has a rule, flow process is the most, more sophisticated device, and the probability gone wrong can increase accordingly, particularly the equipment of phosphorous slurry recovery be operated in high pressure under conditions of, device therefor increases, need monitoring site to increase, cause safety coefficient to reduce, simultaneously, the investment of equipment adds, and operating cost also increases.
Therefore, a set of can improve the response rate, reduce impurity content in tail gas, simple in construction easily operates simultaneously, the phosphorous slurry recovery equipment that main safety is high, has the effect of greatly facilitating for phosphorus chemical industry.
Summary of the invention
For solving the problem that existing phosphorous slurry recovery equipment exists, this utility model provides a kind of multistage combined phosphorous slurry recovery system, by using multistage retracting device, maximized for residual phosphorus steam condensation is reclaimed, improve the response rate, reduce impurity content in tail gas, be also greatly reduced the danger coefficient of equipment.
For achieving the above object, by the following technical solutions, a kind of multistage combined phosphorous slurry recovery system, including Phosphorus steaming appts. and receipts phosphorus device for this utility model.
Described Phosphorus steaming appts. includes phosphorus furnace exhaust gas combustion furnace 1, rotary pot 2, dry blowing main shaft 3, buncher 4, phosphorus transporting pipe road 5 and controller 6.
Described combustion furnace 1 has combustor 101, and the burning shower nozzle of combustor 101 is connected with phosphorus furnace exhaust gas pipeline 102, and phosphorus furnace exhaust gas leads to burning shower nozzle combustion heating.
Described phosphorus furnace exhaust gas pipeline 102 is provided with air volume regulating valve and igniter.
Described dry blowing main shaft 3 is hollow part, and it arranges, on rotary pot 2, and the part in being in rotary pot 2, the steam ports that phosphorus steam circulates, and dry blowing main shaft 3 and rotary pot 2 two end side panels are fixed and extend to outside rotary pot 2 two end side panels.
Described rotary pot 2 both sides are provided with the support 8 installing roller 7, rotary pot 2 is supported by the roller 7 on described support 8 by extending to the dry blowing main shaft 3 outside its two end side panels, one end of the described dry blowing main shaft 3 extended to outside rotary pot 2 two end side panels and phosphorus transporting pipe road 5 UNICOM, the other end is connected with buncher 4, and be driven by, and then pot 2 is rotated rotates.
Described receipts phosphorus device includes one-level, two grades and three grades of retracting devices.
Described one-level retracting device carries out primary condensation and reclaims phosphorus steam, its structure includes phosphorus steam inlet duct 9, collection phosphorus crucible 10 and phosphorous tail gas transfer pipe 11, described phosphorus steam inlet duct 9 tail end stretches into collection phosphorus crucible 10 inside and submerges in hot water, its initial end and phosphorus transporting pipe road 5 UNICOM, the entrance of described phosphorous tail gas transfer pipe 11 is connected to collect the top of phosphorus crucible 10, outlet is then connected on secondary recovery device, phosphorus steam inlet duct 9 is delivered to collect in phosphorus crucible 10 by heating the yellow phosphorus steam obtained in rotary pot 2, carry out condensing and be deposited on bottom collection phosphorus crucible 10 by the hot water in collection phosphorus crucible 10, tail gas after first condensation is reclaimed then enters in phosphorous tail gas transfer pipe 11 and is transferred to second level retracting device.
Described secondary recovery device carries out Washing recovery to phosphorous tail gas, and its structure includes sealflushing pond 12, sedimentation basin 13, phosphorous tail gas air inlet pipe 14, water inlet pipe 15 and rinsing coil pipe 16;Sealflush pond 12 to be connected with sedimentation basin 13, phosphorous tail gas air inlet pipe 14 and water inlet pipe 15 all enter from the top sealflushing pond 12, the two is connected to rinse on coil pipe 16 after sealflushing the connection of top, pond 12, water and phosphorous tail gas rinse toward back mixing in rinsing coil pipe 16, further the phosphorus contained in tail gas is collected in water, air-water mixture is after flushing coil pipe 16 is out, water containing yellow phosphorus enters in sedimentation basin 13 and carries out phosphorus water separation, the heavy collection of yellow phosphorus is in bottom, and gas then enters third level retracting device by gas recovery conduit 131.
Described third level retracting device includes being atomized collecting pit 17, atomization feed pipe 18, atomisation tower 19, tail gas discharging pipe 20, atomization feed pipe 18 is connected to atomisation tower 19 top, atomisation tower 19 is fixed on atomization collecting pit 17 upper end, the gas recovery conduit of secondary recovery device is connected to atomisation tower 19 bottom, the gas remaining a small amount of phosphorus enters atomisation tower 19 by gas recovery conduit 131, water is delivered to atomisation tower 19 by atomization feed pipe 18 simultaneously, atomisation tower 19 makes water fogging as gas, it is made to improve with fusion and the exposure level of phosphorous gas, the phosphorus of residual is at utmost condensed recovery in atomization collecting pit 17, residual gas is essentially steam, directly discharged by tail gas discharging pipe 20.
Being provided with temperature sensor in described rotary pot 2, phosphorus transporting pipe road 5 is provided with pressure transducer;Temperature sensor, pressure transducer are connected with controller 6 by holding wire, and controller 6 is connected by control line with buncher 4, air inlet adjustment valve, ignition.
It is provided with on described collection phosphorus crucible 10 top, sedimentation basin 13 and atomization collecting pit 17 and visits material hole 21 and reclaim the extraction opening 22 of yellow phosphorus, for the yellow phosphorus thickness of manual detection bottom deposit, and use draw-out device to be reclaimed;Also directly ultrasound wave material detection device can be set for inside three, improve the automaticity of its detection.
Beneficial effect: the technical solution of the utility model is the most up to standard for exhaust emissions present in existing mud phosphorus dry blowing recovery technology, and equipment investment is big and the deficiency of security control difficulty, have employed three grades of recovery systems, first order recovery system reduces the quantity of dangerous big collection phosphorus crucible 10, only being provided with a collection phosphorus crucible 10, reclaiming for phosphorus steam being carried out primary condensation;Second level recovery system arranges the cooling to phosphorous gas and rinses coil of pipes, condense recovery further;Third level recovery system arranges cooling water atomization tower 19, cooling water smoke is turned to gas, improve its fusion with phosphorous gas and exposure level, the phosphorus steam of residual is maximized condensation reclaims, it is ensured that the tail gas finally discharged is essentially steam.Compared to prior art, device described in the utility model solves above-mentioned deficiency, improves the response rate, reduces impurity content in tail gas, is also greatly reduced the danger coefficient of equipment, has obvious advantage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is side view of the present utility model.
In figure, phosphorus furnace exhaust gas combustion furnace 1, combustor 101, phosphorus furnace exhaust gas pipeline 102, rotary pot 2, dry blowing main shaft 3, buncher 4, phosphorus transporting pipe road 5, controller 6, roller 7, support 8, phosphorus steam inlet duct 9, collection phosphorus crucible 10, phosphorous tail gas transfer pipe 11, sealflush pond 12, sedimentation basin 13, gas recovery conduit 131, phosphorous tail gas air inlet pipe 14, water inlet pipe 15, rinse coil pipe 16, atomization collecting pit 17, atomization feed pipe 18, atomisation tower 19, tail gas discharging pipe 20, visit material hole 21, reclaim yellow phosphorus extraction opening 22.
Detailed description of the invention
Below in conjunction with the accompanying drawings and explanation the present invention is further described.
Embodiment
1
As shown in Figure 1, 2, a kind of multistage combined phosphorous slurry recovery system, including Phosphorus steaming appts. and receipts phosphorus device.
Described Phosphorus steaming appts. includes phosphorus furnace exhaust gas combustion furnace 1, rotary pot 2, dry blowing main shaft 3, buncher 4, phosphorus transporting pipe road 5 and controller 6;Described combustion furnace 1 has combustor 101, and the burning shower nozzle of combustor 101 is connected with phosphorus furnace exhaust gas pipeline 102, and phosphorus furnace exhaust gas leads to burning shower nozzle combustion heating;Described phosphorus furnace exhaust gas pipeline 102 is provided with air volume regulating valve and igniter;Described dry blowing main shaft 3 is hollow part, and it arranges, on rotary pot 2, and the part in being in rotary pot 2, the steam ports that phosphorus steam circulates, and dry blowing main shaft 3 and rotary pot 2 two end side panels are fixed and extend to outside rotary pot 2 two end side panels;Described rotary pot 2 both sides are provided with the support 8 installing roller 7, rotary pot 2 is supported by the roller 7 on described support 8 by extending to the dry blowing main shaft 3 outside its two end side panels, one end of the described dry blowing main shaft 3 extended to outside rotary pot 2 two end side panels and phosphorus transporting pipe road 5 UNICOM, the other end is connected with buncher 4, and be driven by, and then pot 2 is rotated rotates.
Described receipts phosphorus device includes one-level, two grades and three grades of retracting devices.
Described one-level retracting device carries out primary condensation and reclaims phosphorus steam, its structure includes phosphorus steam inlet duct 9, collection phosphorus crucible 10 and phosphorous tail gas transfer pipe 11, described phosphorus steam inlet duct 9 tail end stretches into collection phosphorus crucible 10 inside and submerges in hot water, its initial end and phosphorus transporting pipe road 5 UNICOM, the entrance of described phosphorous tail gas transfer pipe 11 is connected to collect the top of phosphorus crucible 10, outlet is then connected on secondary recovery device, phosphorus steam inlet duct 9 is delivered to collect in phosphorus crucible 10 by heating the yellow phosphorus steam obtained in rotary pot 2, carry out condensing and be deposited on bottom collection phosphorus crucible 10 by the hot water in collection phosphorus crucible 10, tail gas after first condensation is reclaimed then enters in phosphorous tail gas transfer pipe 11 and is transferred to second level retracting device.
Described secondary recovery device carries out Washing recovery to phosphorous tail gas, and its structure includes sealflushing pond 12, sedimentation basin 13, phosphorous tail gas air inlet pipe 14, water inlet pipe 15 and rinsing coil pipe 16;Sealflush pond 12 to be connected with sedimentation basin 13, phosphorous tail gas air inlet pipe 14 and water inlet pipe 15 all enter from the top sealflushing pond 12, the two is connected to rinse on coil pipe 16 after sealflushing the connection of top, pond 12, water and phosphorous tail gas rinse toward back mixing in rinsing coil pipe 16, further the phosphorus contained in tail gas is collected in water, air-water mixture is after flushing coil pipe 16 is out, water containing yellow phosphorus enters in sedimentation basin 13 and carries out phosphorus water separation, and gas then enters third level retracting device by gas recovery conduit 131.
Described third level retracting device includes being atomized collecting pit 17, atomization feed pipe 18, atomisation tower 19, tail gas discharging pipe 20, atomization feed pipe 18 is connected to atomisation tower 19 top, atomisation tower 19 is fixed on atomization collecting pit 17 upper end, the gas recovery conduit of secondary recovery device is connected to atomisation tower 19 bottom, the gas remaining a small amount of phosphorus enters atomisation tower 19 by gas recovery conduit 131, water is delivered to atomisation tower 19 by atomization feed pipe 18 simultaneously, atomisation tower 19 makes water fogging as gas, it is made to improve with fusion and the exposure level of phosphorous gas, the phosphorus of residual is at utmost condensed recovery in atomization collecting pit 17, residual gas is essentially steam, directly discharged by tail gas discharging pipe 20.
Being provided with temperature sensor in described rotary pot 2, phosphorus transporting pipe road 5 is provided with pressure transducer;Temperature sensor, pressure transducer are connected with controller 6 by holding wire, and controller 6 is connected by control line with buncher 4, air inlet adjustment valve, ignition.
Embodiment
2
As shown in Figure 1, 2, one multistage combined phosphorous slurry recovery system described in the present embodiment, its structure is basically identical with described in embodiment 1, difference is on described collection phosphorus crucible 10 top, sedimentation basin 13 and atomization collecting pit 17 to be provided with visit material hole 21 and reclaim the extraction opening 22 of yellow phosphorus, for the yellow phosphorus thickness of manual detection bottom deposit, and draw-out device is used to be reclaimed.
Embodiment
3
As shown in Figure 1, 2, one multistage combined phosphorous slurry recovery system described in the present embodiment, its structure is basically identical with described in embodiment 1, difference is that the inside of described collection phosphorus crucible 10 top, sedimentation basin 13 and atomization collecting pit 17 arranges ultrasound wave material detection device, improves the automaticity of its detection.