CN203159229U - Equipment for producing industrial phosphoric acid by using carbothermy - Google Patents
Equipment for producing industrial phosphoric acid by using carbothermy Download PDFInfo
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- CN203159229U CN203159229U CN 201320081855 CN201320081855U CN203159229U CN 203159229 U CN203159229 U CN 203159229U CN 201320081855 CN201320081855 CN 201320081855 CN 201320081855 U CN201320081855 U CN 201320081855U CN 203159229 U CN203159229 U CN 203159229U
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Abstract
The utility model discloses equipment for producing industrial phosphoric acid by using carbothermy, belonging to the technical field of industrial thermal phosphoric acid production equipment. The equipment comprises a raw material pre-treating and coking part and a temperature increase reduction reaction and residual carbon gasifying part, wherein the raw material pre-treating and coking part is a vertical furnace with a feeder, a discharge mechanism and a plurality of water-cold inclined furnace bars; the temperature increase reduction reaction and residual carbon gasifying part is also a vertical furnace; the middle upper part is an oxidation combustion chamber; and the lower part is a residual carbon gasifying chamber; the oxidation combustion chamber is isolated from the residual carbon gasifying chamber by using a fireproofing material plate; the oxidation combustion chamber is internally provided with one to two vertical tanks; the tanks are provided with feeders and gas outlets; the lower ends of the tanks are communicated with the residual carbon gasifying chamber; the oxidation combustion chamber is provided with a fuel gas inlet and a furnace gas discharge channel; the residual carbon gasifying chamber is provided with a carbon monoxide gas outlet; and the bottom part of the residual carbon gasifying chamber is opened and abutted with a water jacket. By utilizing the equipment, industrial phosphoric acid can be produced by directly using middle/low grade phosphorite as the raw materials, the thermal utilization efficiency is high, the thermal energy consumption is small, the production cost is low, the product quality is good, the equipment works stably, and less fixed asset investment is needed.
Description
Technical field
The equipment of carbothermy manufacture phosphoric acid belongs to thermal phosphoric acid suitability for industrialized production equipment technical field.
Background technology
At present the domestic production thermal phosphoric acid yellow phosphorus that must get with Electric Cooker is raw material, and producing of electric furnace yellow phosphorus is raw material with the higher-grade phosphorus ore again, in low-grade phosphorus ore can't use; Producing the electric furnace that yellow phosphorus uses in addition is the resistance electric arc furnace, need to consume a large amount of electric energy, thereby electric furnace yellow phosphorus to produce the cost of phosphoric acid higher.
The utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of equipment of carbothermy manufacture phosphoric acid is provided, and this equipment can directly use mid low grade phosphate rock to be raw material, reduces energy consumption and production costs.
The utility model is by raw materials pretreatment and close-burning part, and heating reduction reaction and surplus carbon gasification are partly formed;
Raw materials pretreatment and close-burning partly are a vertical heater, and furnace roof portion establishes sealable feeder, and discharge mechanism and water seal blow-off valve are established in the bottom, establish a plurality of tilting grate of water-cooled in the burner hearth;
Heating reduction reaction and surplus carbon gasification partly are a vertical heater, the middle and upper part burner hearth of stove is the oxidizing fire chamber, the lower furnace of stove is surplus carbon gasification chamber, separated by the refractory materials plate body between oxidizing fire chamber and the surplus carbon gasification chamber, indoor one to two the vertical refractory materials that is provided with of oxidizing fire is built the tank body that forms by laying bricks or stones, sealable feeder and gas discharge outlet are established in the tank body upper end, the tank body lower end communicates with surplus carbon gasification chamber, top, oxidizing fire chamber establishes that fuel gas enters the hole and the furnace gas exhaust channel is established in the bottom, the CO (carbon monoxide converter) gas relief outlet is established and uncovered butt joint one water jacket in bottom in the top of surplus carbon gasification chamber, and dreg discharging roller and salable residual cake valve are equipped with in the water jacket bottom.The fuel gas on top, oxidizing fire chamber enters the hole and is communicated with gas discharge outlet, the CO (carbon monoxide converter) gas relief outlet of surplus carbon gasification chamber, the elevated temperature heat wind regime of tank body upper end respectively by pipeline and control valve.
In whole plant, the different operation parts of each productive unit all can be carried out independent adjustment control respectively according to temperature, atmosphere, the pressure of processing requirement, guarantee that each operation partly operates at optimum regime in the equipment, to obtain the highest reduction ratio of phosphorus and the rate of recovery.The topmost characteristics of this equipment are that the closed circulation of strengthening device interior heat energy is used, and reduce the unnecessary consumption of device interior heat energy as far as possible, have reduced fuel cost.
The required heat of production process is mainly supplied with through oxidizing fire by element phosphor gas, CO (carbon monoxide converter) gas that the raw material reduction reaction produces.The slag calcium contents height that production process produces, phosphorus content is lower than the phosphorus content in the electric furnace phosphoric slag in the slag, can be used as the raw material of producing cement clinker, has eliminated the exhaust emission of slag to environment.In the production process, the waste gas that nothing exceeds standard, waste water do not produce problem of environment pollution caused to environmental emission.
The working process of equipment:
In low-grade phosphorus ore, silica, bituminous coal or hard coal, mix abrasive dust through metering, add binding agent and water, be pressed into ball-type after mixing and give birth to nodulizing, in the stove of charging feedstock pre-treatment and close-burning part, utilize high warm air that raw material is directly carried out heating flame and heat up after drying.After close-burning was handled, raw material had been eliminated moisture and volatile matter, has improved temperature and the physical strength of raw material.
Raw material after close-burning is handled, the feeder of tank body upper end adds in heating reduction reaction and surplus carbon gasification part, and raw material is connect the temperature that heats to processing requirement between in tank body and is carried out reduction reaction.The gas (comprising carbon monoxide and phosphorus steam) that reduction reaction produces in the tank body enters the oxidizing fire Indoor Combustion from the gas discharge outlet of tank body upper end, and the heat of generation carries out indirect heating to the raw material in the tank body again, keeps normally carrying out of reduction reaction.Slag after reduction reaction contains a certain amount of fixed carbon, and slag is displaced downwardly to surplus carbon gasification chamber from tank body and reacts, and the CO (carbon monoxide converter) gas of generation enters the oxidizing fire Indoor Combustion from the CO (carbon monoxide converter) gas relief outlet of surplus carbon gasification chamber.Remaining slag behind the gasification reaction, through heat exchange and water jacket cooling back by dreg discharging roller and have the residual cake valve discharge of sealing function, thereby finished the whole production flow process.
The high-temperature furnace gas that obtains after the oxidizing fire Indoor Combustion is sent into the supporting conventional nonmetallic heat exchanger of a peripheral hardware from the furnace gas exhaust channel of oxidizing fire chamber, the high-temperature hot-air that interchanger obtains uses for the oxidation combustion chamber, and the furnace gas after the heat exchange cooling enters the hydration systems recovery and obtains phosphoric acid product.
The beneficial effects of the utility model: equipment can realize directly using mid low grade phosphate rock to be the raw material production industrial phosphoric acid well, for condition has been created in the direct utilization of mid low grade phosphate rock resource.The efficiency of utilization height of equipment, heat energy consumption is few, production cost is low, good product quality, equipment operation stable, and the fixed capital input amount is lower.
Description of drawings
Fig. 1 looks cross-sectional view for the master of raw materials pretreatment among the embodiment and close-burning part.
Fig. 2 looks cross-sectional view for the master of heating reduction reaction among the embodiment and surplus carbon gasification part.
Embodiment
Embodiment: see Fig. 1～2.
Raw materials pretreatment and close-burning partly are a vertical heater, and its furnace wall 4 forms by building casting refractory in the outer cover of steel plate by laying bricks or stones.Furnace roof portion establishes hopper 1 and water-sealed valve feeder 2.Establish a plurality of tilting grate 6 of water-cooled in the burner hearth.Furnace bottom is established discharge mechanism and water seal blow-off valve 7.3 is the furnace gas outlet orifice among Fig. 1, and 5 are the air blast hole, and 8 is discharge bucket.
Heating reduction reaction and surplus carbon gasification partly are a vertical heater, and its furnace wall 15 forms by building casting refractory by laying bricks or stones in the steel plate making shell.The middle and upper part burner hearth of stove is oxidizing fire chamber 12, the lower furnace of stove is surplus carbon gasification chamber 23, separated by refractory materials plate body 18 between oxidizing fire chamber 12 and the surplus carbon gasification chamber 23, be provided with in the oxidizing fire chamber 12 two vertical, to build the tank body 13,14 that forms by laying bricks or stones by refractory materials be the inner chamber of tank body 13.It is hopper that sealable feeder 10,9 is established in tank body 13 upper ends.Tank body 13 lower ends are communicated with through passage 24 with surplus carbon gasification chamber 23.12 tops, oxidizing fire chamber establish that fuel gas enters hole 11 and furnace gas exhaust channel 16 is established in the bottom.CO (carbon monoxide converter) gas relief outlet 17 is established and uncovered 22 butt joints in bottom one watercooling jacket 19 in the top of surplus carbon gasification chamber 23, and dreg discharging roller 21 and salable residual cake valve 20 are equipped with in water jacket 19 bottoms, carry out air seal.The fuel gas of oxidizing fire chamber 12 enters hole 11 and is communicated with gas discharge outlet 26, the CO (carbon monoxide converter) gas relief outlet 17 of surplus carbon gasification chamber 23, the elevated temperature heat wind regime 27 of tank body upper end respectively by pipeline (not marking piece number among the figure) and control valve 25.
Above embodiment is only in order to be further described the utility model, and scope of the present utility model is not subjected to the restriction of illustrated embodiment.
Claims (2)
1. the equipment of a carbothermy manufacture phosphoric acid is characterized in that by raw materials pretreatment and close-burning part, and heating reduction reaction and surplus carbon gasification are partly formed:
Raw materials pretreatment and close-burning partly are a vertical heater, and furnace roof portion establishes sealable feeder, and discharge mechanism and water seal blow-off valve are established in the bottom, establish a plurality of tilting grate of water-cooled in the burner hearth;
Heating reduction reaction and surplus carbon gasification partly are a vertical heater, the middle and upper part burner hearth of stove is the oxidizing fire chamber, the lower furnace of stove is surplus carbon gasification chamber, separated by the refractory materials plate body between oxidizing fire chamber and the surplus carbon gasification chamber, indoor one to two the vertical refractory materials that is provided with of oxidizing fire is built the tank body that forms by laying bricks or stones, sealable feeder and gas discharge outlet are established in the tank body upper end, the tank body lower end communicates with surplus carbon gasification chamber, top, oxidizing fire chamber establishes that fuel gas enters the hole and the furnace gas exhaust channel is established in the bottom, the CO (carbon monoxide converter) gas relief outlet is established and uncovered butt joint one water jacket in bottom in the top of surplus carbon gasification chamber, dreg discharging roller and salable residual cake valve are equipped with in the water jacket bottom, the fuel gas on top, oxidizing fire chamber enter the hole by pipeline and control valve respectively with the gas discharge outlet of tank body upper end, the CO (carbon monoxide converter) gas relief outlet of surplus carbon gasification chamber, the elevated temperature heat wind regime is communicated with.
2. the equipment of carbothermy manufacture phosphoric acid as claimed in claim 1 is characterized in that oxidizing fire is indoor to be provided with two vertical refractory materialss and to build the tank body that forms by laying bricks or stones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320081855 CN203159229U (en) | 2013-02-22 | 2013-02-22 | Equipment for producing industrial phosphoric acid by using carbothermy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320081855 CN203159229U (en) | 2013-02-22 | 2013-02-22 | Equipment for producing industrial phosphoric acid by using carbothermy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203159229U true CN203159229U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320081855 Expired - Fee Related CN203159229U (en) | 2013-02-22 | 2013-02-22 | Equipment for producing industrial phosphoric acid by using carbothermy |
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| CN (1) | CN203159229U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238290A (en) * | 2017-04-28 | 2017-10-10 | 北京迈未科技有限公司 | Integral type vertical furnace and the method that phosphoric acid is prepared by it |
-
2013
- 2013-02-22 CN CN 201320081855 patent/CN203159229U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238290A (en) * | 2017-04-28 | 2017-10-10 | 北京迈未科技有限公司 | Integral type vertical furnace and the method that phosphoric acid is prepared by it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20180222 |