CN202057214U - Pipe heat exchanger by utilizing residual heat of thermal phosphoric acid device to produce inorganic salt - Google Patents
Pipe heat exchanger by utilizing residual heat of thermal phosphoric acid device to produce inorganic salt Download PDFInfo
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- CN202057214U CN202057214U CN2011200198743U CN201120019874U CN202057214U CN 202057214 U CN202057214 U CN 202057214U CN 2011200198743 U CN2011200198743 U CN 2011200198743U CN 201120019874 U CN201120019874 U CN 201120019874U CN 202057214 U CN202057214 U CN 202057214U
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- heat exchanger
- heat
- phosphoric acid
- pipe
- thermal phosphoric
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model discloses a pipe heat exchanger by utilizing residual heat of a thermal phosphoric acid device to produce inorganic salt. The pipe heat exchanger comprises a heat exchanger shell, pipe plates, a deflector plate and heat exchange pipes, wherein a heat exchange cavity is formed between the heat exchanger shell and the two pipe plates, a cold air inlet and a hot air outlet are arranged on the heat exchanger shell, the heat exchange cavity is internally provided with a plurality of heat exchange pipes penetrating the pipe plates, and the heat exchange pipes are arranged along the axial direction of the heat exchanger shell. The pipe heat exchanger eliminates the use and the waste of natural gas, coal, heavy oil and other nonrenewable resources during production process of various inorganic slat products, does not emit a great deal of carbon dioxide, can utilize high heat energy generated from yellow phosphorus burning to the maximum extent, and simultaneously can conduct residual heat utilization on thermal phosphoric acid in large and small thermal phosphoric capacity.
Description
Technical field
The utility model relates to a kind of pipe heat exchanger, is applicable to utilize the thermal phosphoric acid device by utilizing waste heat to produce inorganic salts products such as phosphate.
Background technology
In the prior art, in the thermal phosphoric acid production process, the phosphorus burning produces a large amount of heats, existing production technology is that these heats are taken away with a large amount of recirculated cooling waters or recycle acid, to avoid producing the high temperature corrosion of medium to the equipment inwall, recirculated cooling water and recycle acid are taken away heat and can not be utilized once more again, and energy is wasted.At present, indivedual manufacturers adopt Tsing-Hua University and Yunnan chemical research institute patented technology, and the extraordinary combustion of utilization phosphorus equipment absorbs combustion phosphorus heat generation saturated vapor and carries out heat recovery, has certain economic benefit.But used extraordinary combustion phosphorus equipment and materials of this technology and cost of manufacture are higher, be not suitable in particularly phosphorous chemical industry medium-sized and small enterprises popularization on a large scale, and enterprise that can't export trade steam little for self steam consumption, more there is not promotional value, and should be equivalent to a high-pressure boiler by special type combustion phosphorus equipment, potential safety hazard is bigger, and the safety check expense is higher.
Anhydrous sodium phosphate (potassium) salt comprises monosodium phosphate, disodium, trisodium and dikalium phosphate, tripotassium etc.; Polymeric phosphate comprises PTPP, sodium phosphate trimer, sodium pyrophosphate, SAPP, potassium pyrophosphate etc.; The inorganic salts product that product that other need heat supply is produced such as all kinds of need add thermal response and insulation etc.The most of enterprises of the used thermal source of processes such as dehydration in its production process, oven dry, reaction, polymerization use natural gas, yellow phosphoric tail gas, coal, heavy oil, electric heating etc. basically, a large amount of energy had both been wasted, discharge great amount of carbon dioxide again, do not meet low-carbon economy and sustainable development requirement.
The applicant has proposed a kind of thermal phosphoric acid device by utilizing waste heat on April 15th, 2010 and has produced phosphatic pipe heat exchanger, the patent No. is " 201020160794.5 ", and the pipe heat exchanger mounting means of being narrated in this patent is that heat exchanger tube and phosphorus burner flue gas move towards in vertical state.This mode requires in the phosphorus burner thorax sectional area unsuitable too small, and heat exchanger tube installs and morely just can reach the heat exchange area requirement, and installation workload is big, can certain limitation be arranged the thermal phosphoric acid UTILIZATION OF VESIDUAL HEAT IN to abortion.
The utility model content
The purpose of this utility model is to overcome the problems referred to above of inorganic salts production existence such as existing phosphate, a kind of pipe heat exchanger that utilizes the thermal phosphoric acid device by utilizing waste heat to produce inorganic salts product such as phosphate is provided, the utility model has been eliminated using and wasting non-renewable resources such as natural gas, coal, heavy oil in each process of producing product of inorganic salts, and do not discharge great amount of carbon dioxide, the great number heat energy that can utilize yellow phosphorus burning to greatest extent and produced makes the thermal phosphoric acid of big or small production capacity all can carry out UTILIZATION OF VESIDUAL HEAT IN simultaneously.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of pipe heat exchanger that utilizes the thermal phosphoric acid device by utilizing waste heat to produce inorganic salts, comprise heat exchanger shell, tube sheet, deflection plate and heat exchanger tube, it is characterized in that: form heat exchanging chamber between described heat exchanger shell and two tube sheets, heat exchanger shell is provided with cold wind import and hot-blast outlet, be provided with the many heat exchanger tubes that pass tube sheet in the heat exchanging chamber, described heat exchanger tube is along the axial setting of heat exchanger shell.
Described heat exchanger shell is provided with heat-insulation layer outward.
The inner chamber of described heat exchanger shell comprises the heat exchanging chamber between two link inner chambers and two the link inner chambers, and the link inner chamber is communicated with heat exchanger tube.
Described link surface of internal cavity is provided with refractory masses.
Be provided with two tube sheets in the described heat exchanger shell, the heat exchanger shell between two tube sheets and two tube sheets forms heat exchanging chamber.
Be provided with a plurality of deflection plates in the shell side of described heat exchanging chamber, a plurality of deflection plates are interspersed and form the baffling passage, and baffling passage one end communicates with the cold wind import, and the other end communicates with hot-blast outlet.
Described many heat exchanger tubes are evenly distributed in the heat exchanging chamber.
Adopt advantage of the present utility model to be:
One, is provided with heat exchanging chamber in the utility model heat exchanger shell, heat exchanging chamber is provided with cold wind import and hot-blast outlet, be provided with many heat exchanger tubes in the heat exchanging chamber, described heat exchanger tube is along the axial setting of heat exchanger shell, axially consistent with phosphorus burner, eliminated using and wasting non-renewable resources such as natural gas, coal, heavy oil in the inorganic salts process of producing product such as phosphoric acid and phosphate, reduced the production run cost significantly, the great number heat energy that can utilize yellow phosphorus burning to greatest extent and produced.
Two, in the utility model, heat exchanger tube axially is installed in the heat exchanging chamber, and is axially consistent with phosphorus burner, and heat exchanger is a shell and tube, and combustion phosphorus flue gas is walked tube side, and the heat exchange air is walked shell side, and it is more abundant to absorb heat.
Three, in the utility model, many heat exchanger tubes axially evenly distribute in phosphorus burner, form tubular heat exchanger, are convenient to install, and make the quantity of heat exchanger tube reach maximum, thereby increase heat exchange area.
Four, in the utility model, heat exchanger tube is evenly distributed in the heat exchanging chamber, under the prerequisite that guarantees fully heat absorption, is convenient to the phosphorus pentoxide flue gas and evenly passes through in each heat exchanger tube, is convenient to postorder and handles.
Five, adopt structure of the present utility model, its heat exchanger tube has high strength, high temperature resistant, high rigidity, high abrasion, corrosion-resistant, anti-oxidant, anti-rapid heat cycle, good thermal shock, heat conduction is good and characteristics such as thermal efficiency height, has solved the problem of inorganic salts production heat resource equipments such as existing phosphate and equipment corrosion.
Six, when yellow phosphorus burning, because of combustion air contains the small amount of moisture reason, when generating phosphorus pentoxide, also there is a small amount of metaphosphoric acid steam to generate, flue-gas temperature is about 1000 ℃, and corrosivity is stronger, uses the heat exchanger tube of outer other material of the utility model structure all can not reach ideal effect, corrosion is very fast, cause phosphoric acid product contaminated, and adopt the heat exchanger tube of the utility model structure, heatproof is up to 1380 ℃, both guarantee the requirement of air heater, guaranteed the quality of phosphoric acid product again.
Seven, behind employing the utility model, phosphoric acid production does not re-use a large amount of cooling waters, and one ton of about 60-100 ton of acid water saving of every production has realized that simultaneously phosphoric acid is incubated requirement from molten phosphorus of quantity of heat production supply self and defeated phosphorus.
Eight, adopt the utility model to produce inorganic salts products such as phosphoric acid and phosphate, compare with the current production technology of generally using, do not use fuel and resources such as natural gas, coal, heavy oil, electric heating because of it, each production cost reduces significantly, economic benefit is huge, and do not have great amount of carbon dioxide gas and discharge, belong to environmental protection and low-carbon economy type, meet the national industrial policies and the strategy of sustainable development.
Nine, in the utility model, the heat exchanger shell outside is provided with heat-insulation layer, and heat loss is less, has made full use of heat energy.
Ten, in the utility model, the inner chamber of heat exchanger shell comprises the heat exchanging chamber between two link inner chambers and two the link inner chambers, and the link inner chamber is communicated with heat exchanger tube, is convenient to being connected of heat exchanger and phosphorus burner, and has guaranteed the heat exchange effect after connecting.
11, in the utility model, the link surface of internal cavity is provided with refractory masses, directly contacts with tube sheet with the link housing to avoid the firing phosphorus flue gas, has prolonged the service life of heat exchanger.
12, in the utility model, be provided with two tube sheets in the heat exchanger shell, the heat exchanger shell between two tube sheets and two tube sheets forms heat exchanging chamber, and installing/dismounting is simple, is convenient to safeguard.
13, in the utility model, be provided with a plurality of deflection plates in the heat exchanging chamber shell side, a plurality of deflection plates are interspersed and form the baffling passage, and baffling passage one end communicates with the cold wind import, and the other end communicates with hot-blast outlet, has increased heat-exchange time, has improved heat exchange efficiency.
14, the utility model is compared with " 201020160794.5 " patent, flue gas of the present utility model is walked tube side, the heat exchange air is walked shell side, link inner chamber housing directly welds with the phosphorus burner housing or flange connects, the heat exchange effect is better, and installing/dismounting is more convenient on phosphorus burner, and service life of equipment is longer, and make the thermal phosphoric acid of big or small production capacity all can carry out UTILIZATION OF VESIDUAL HEAT IN, the scope of application is wider.
Description of drawings
Fig. 1 is the utility model structural representation
Be labeled as among the figure: 1, heat exchanger shell, 2, tube sheet, 3, deflection plate, 4, heat exchanger tube, 5, heat exchanging chamber, 6, heat-insulation layer, 7, the link inner chamber, 8, refractory masses, 9, the cold wind import, 10, hot-blast outlet.
The specific embodiment
A kind of pipe heat exchanger that utilizes the thermal phosphoric acid device by utilizing waste heat to produce inorganic salts, comprise heat exchanger shell, tube sheet, deflection plate and heat exchanger tube, between described heat exchanger shell and two tube sheets as heat exchanging chamber, heat exchanging chamber is provided with cold wind import and hot-blast outlet, be provided with the many heat exchanger tubes that pass tube sheet in the heat exchanging chamber, described heat exchanger tube is along the axial setting of heat exchanger shell, and is axially consistent with phosphorus burner.
Preferred implementation of the present utility model is that heat exchanger shell is provided with heat-insulation layer outward.
Preferred implementation of the present utility model is, the inner chamber of heat exchanger shell comprises the heat exchanging chamber between two link inner chambers and two the link inner chambers, and link inner chamber housing connects with welding of phosphorus burner housing or flange, and the link inner chamber is communicated with heat exchanger tube.Further, at the link surface of internal cavity refractory masses can be set.
Preferred implementation of the present utility model is, is provided with two tube sheets in the heat exchanger shell, and the heat exchanger shell between two tube sheets and two tube sheets forms heat exchanging chamber.The generation type of heat exchanging chamber has a lot, is not limited thereto.
Preferred implementation of the present utility model is, is provided with a plurality of deflection plates in the heat exchanging chamber shell side, and a plurality of deflection plates are interspersed and form the baffling passage, and baffling passage one end communicates with the cold wind import, and the other end communicates with hot-blast outlet.The set-up mode of deflection plate is identical with deflection plate set-up mode in existing other heat exchanger.
In addition, many heat exchanger tubes are evenly distributed in the heat exchanging chamber, make the spacing between the adjacent heat exchange tubes identical, guarantee the heat exchange effect.
The utility model is installed on horizontal or vertical phosphorus burner tail end.Heat exchanger shell, deflection plate, tube sheet are boiler steel or other metal and non-metallic material, and be general consistent with the phosphorus burner shell material.Heat exchanger tube adopts silicon carbide ceramic, perhaps adopt performance and silicon carbide ceramic approaching as zirconia ceramics pipe, quartz glass tube, high-boron-silicon glass pipe etc.
Below to be example with silicon carbide ceramic as heat exchanger tube do to launch explanation to the utility model:
Utilize the hydration of promptly burning of traditional thermal phosphoric acid two-step method production technology to separate flow process, earthenware is installed in heat exchanger shell, axially install many but have spacing to make tubular heat exchanger, be convenient to the phosphorus pentoxide flue gas and in managing, pass through.Heat exchanger shell and tube sheet, deflection plate can be selected boiler steel material or other metal and non-metallic material according to serviceability temperature.During the phosphoric acid ordinary production, phosphorus pentoxide flue-gas temperature in the phosphorus burner＞900 ℃.With high pressure centrifugal blower from cold wind import input natural air, blower export (not entering heat exchanger as yet) can cold shock airduct in parallel with standby.Also the blower fan of available heat-resisting material is extracted hot-air out and is used.
The hot-air that adds that at first will bloat heat exchanger hot blast outlet is used for the production of above-mentioned anhydrous phosphoric acid salt and makes thermal source.When being higher than 250-350 ℃ of required technological requirement temperature of dehydration (each product dewatering process differs to temperature requirement) as hot air temperature, with blower export but the natural air cold shock that does not enter heat exchanger as yet regulate and lower the temperature; When hot blast temperature is not enough, regulates and reduce the air blast intake or reduce output.
In heat exchanger hot blast outlet one arm is installed then, is made to add that hot-air enters polymerization machine inner core or chuck is made the polymerization thermal source, each product polymerization technique differs to temperature requirement, between total size is 240-400 ℃.It is identical with production anhydrous phosphoric acid salt that temperature and air quantity are regulated.
In exchanger heat air outlet side one arm is being installed at last, is being inserted molten phosphorus and department's phosphorus equipment chuck, making molten phosphorus and insulation usefulness, temperature requirement 50-70 ℃.
The air inflow of above-mentioned air blast can according in product yield and the phosphoric acid production under the situation of as far as possible not using cooling water the temperature of recycle acid determine, promptly by regulating product yield and air blast air inflow, guaranteeing under the situation of recycle acid temperature 〉=65 ℃, the heat release of combustion phosphorus can be used to the greatest extent to greatest extent.How to determine that specifically those skilled in the art can both directly draw according to foregoing description.
Other inorganic salts production uses the regulative mode of this waste heat and principle identical with production phosphate.
The course of work of the present utility model is: combustion phosphorus flue gas enters heat exchanger tube from the link inner chamber, treats that the air of heat exchange enters heat exchanging chamber from the cold wind import, with combustion phosphorus flue gas heat exchange in the heat exchanger tube and by the deflection plate guiding, discharges from hot-blast outlet.
Obviously; those of ordinary skill in the art is according to technological know-how of being grasped and customary means; according to above said content, can also make the various ways that does not break away from the utility model basic technical scheme, these pro forma conversion are all within protection domain of the present utility model.
Claims (7)
1. pipe heat exchanger that utilizes the thermal phosphoric acid device by utilizing waste heat to produce inorganic salts, comprise heat exchanger shell, tube sheet, deflection plate and heat exchanger tube, it is characterized in that: form heat exchanging chamber between described heat exchanger shell and two tube sheets, heat exchanger shell is provided with cold wind import and hot-blast outlet, be provided with the many heat exchanger tubes that pass tube sheet in the heat exchanging chamber, described heat exchanger tube is along the axial setting of heat exchanger shell.
2. the pipe heat exchanger that utilizes the thermal phosphoric acid device by utilizing waste heat to produce inorganic salts according to claim 1, it is characterized in that: described heat exchanger shell is provided with heat-insulation layer outward.
3. the pipe heat exchanger that utilizes the thermal phosphoric acid device by utilizing waste heat to produce inorganic salts according to claim 1 and 2, it is characterized in that: the inner chamber of described heat exchanger shell comprises the heat exchanging chamber between two link inner chambers and two the link inner chambers, and the link inner chamber is communicated with heat exchanger tube.
4. the pipe heat exchanger that utilizes the thermal phosphoric acid device by utilizing waste heat to produce inorganic salts according to claim 3, it is characterized in that: described link surface of internal cavity is provided with refractory masses.
5. the pipe heat exchanger that utilizes the thermal phosphoric acid device by utilizing waste heat to produce inorganic salts according to claim 3 is characterized in that: be provided with two tube sheets in the described heat exchanger shell, the heat exchanger shell between two tube sheets and two tube sheets forms heat exchanging chamber.
6. the pipe heat exchanger that utilizes the thermal phosphoric acid device by utilizing waste heat to produce inorganic salts according to claim 1 and 2, it is characterized in that: be provided with a plurality of deflection plates in the shell side of described heat exchanging chamber, a plurality of deflection plates are interspersed and form the baffling passage, baffling passage one end communicates with the cold wind import, and the other end communicates with hot-blast outlet.
7. the pipe heat exchanger that utilizes the thermal phosphoric acid device by utilizing waste heat to produce inorganic salts according to claim 1 and 2, it is characterized in that: described many heat exchanger tubes are evenly distributed in the heat exchanging chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200198743U CN202057214U (en) | 2011-01-21 | 2011-01-21 | Pipe heat exchanger by utilizing residual heat of thermal phosphoric acid device to produce inorganic salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200198743U CN202057214U (en) | 2011-01-21 | 2011-01-21 | Pipe heat exchanger by utilizing residual heat of thermal phosphoric acid device to produce inorganic salt |
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| CN202057214U true CN202057214U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200198743U Expired - Fee Related CN202057214U (en) | 2011-01-21 | 2011-01-21 | Pipe heat exchanger by utilizing residual heat of thermal phosphoric acid device to produce inorganic salt |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527201A (en) * | 2011-12-31 | 2012-07-04 | 福建省建瓯市芝星活性炭有限公司 | Technical device for recycling tail gas and residual heat during production of active carbon with phosphoric acid method |
| CN106016329A (en) * | 2016-07-26 | 2016-10-12 | 云南汇能科技有限公司 | Reflux and corrosion prevention convection heat exchanger for boiler |
-
2011
- 2011-01-21 CN CN2011200198743U patent/CN202057214U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527201A (en) * | 2011-12-31 | 2012-07-04 | 福建省建瓯市芝星活性炭有限公司 | Technical device for recycling tail gas and residual heat during production of active carbon with phosphoric acid method |
| CN102527201B (en) * | 2011-12-31 | 2016-04-20 | 福建省芝星炭业股份有限公司 | Phosphoric acid tail gas and waste heat recovery re-use device in activated carbon of phosphoric acid method production |
| CN106016329A (en) * | 2016-07-26 | 2016-10-12 | 云南汇能科技有限公司 | Reflux and corrosion prevention convection heat exchanger for boiler |
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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 |
Granted publication date: 20111130 Termination date: 20150121 |
|
| EXPY | Termination of patent right or utility model |