CN104748573A - Method for taking wind and heat from rotary kiln and rotary kiln system capable of taking wind and heat - Google Patents

Abstract

The invention discloses a method for taking wind and heat from a rotary kiln and a rotary kiln system capable of taking wind and heat. The method for taking wind and heat from the rotary kiln includes the step: taking out heat smoke from the rotary kiln, wherein the heat smoke is taken out from a smoke chamber at the kiln tail of the rotary kiln; delivering the heat smoke taken from the smoke chamber at the kiln tail of the rotary kiln, and/or, applying the heat smoke taken from the smoke chamber at the kiln tail of the rotary kiln to prepare potassic fertilizer or industrial raw material. The rotary kiln system capable of taking wind and heat comprises the rotary kiln; the kiln tail of the rotary kiln is interconnected with a thermal decomposition furnace through the smoke chamber; the outside wall of the smoke chamber at the kiln tail of the rotary kiln is provided with a heat smoke outlet. The method for taking wind and heat from the rotary kiln and the rotary kiln system capable of taking wind and heat can obtain heat smoke at high temperature, and temperature of the heat smoke is from 950 DEG C to 1200 DEG C; it is unnecessary to take a fire coal afterburning furnace as the drying hot source; the method and system can effectively dry the replaceable raw material with big water content, and also can produce high-quality potassic fertilizer.

Description

A kind ofly get the method for wind heat-obtaining and the rotary system of desirable wind heat-obtaining from rotary kiln

Technical field

The present invention relates to and a kind ofly from cement kiln, get the method for wind heat-obtaining and the quality coal in cement kiln systems of desirable wind heat-obtaining, particularly relate to and a kind ofly get the method for wind heat-obtaining and the rotary system of desirable wind heat-obtaining from rotary kiln.

Background technology

Cement industry is the large and industry of heavy contamination of resource, energy resource consumption.The energy-saving and emission-reduction increasing pressure born along with China is large, and it is imperative that cement industry carries out transition and upgrade centered by environmental protection and energy saving.Therefore the use substituting crude fuel is development trend, and consumption is increasing, but also can face the harmful element problem that especially chlorine ion concentration is higher in alternative crude fuel simultaneously.

In prior art, the alternative materials that alternative materials has water content large, the alternative materials also having water content little, has the alternative materials that chloride ion content is high, also has the alternative materials that chloride ion content is low.Little for water content, the alternative materials that chloride ion content is low, when utilizing cement rotary kiln to dispose on a large scale, the chopped-off head preheater at kiln tail pyrolysis oven top (in Fig. 1 that one-level of the preheater 0-6 top) outlet is provided with and gets wind heat-obtaining device, get wind heat-obtaining device the heat smoke taken out in the chopped-off head preheater at kiln tail pyrolysis oven top is sent to raw material grinding or raw material stoving crushing system as oven dry thermal source by this, the temperature of heat smoke can reach 280 Celsius to 380 Celsius, little to water content, the alternative materials that chloride ion content is low is dried, alternative materials after oven dry is enough to meet the technological requirement of producing cement.

But, the heat smoke taken out in the chopped-off head preheater at kiln tail pyrolysis oven top is sent to raw material grinding or raw material stoving crushing system as oven dry thermal source by getting wind heat-obtaining device, the temperature of heat smoke can reach 280 degrees Celsius to 380 degrees Celsius, the alternative materials that, chloride ion content large to water content is high is dried, the temperature of heat smoke is lower, and the alternative materials after oven dry cannot meet the technological requirement of producing cement.Although the high alternative materials of chloride ion content is through preheating, the chloride ion content in the heat smoke taken out from the chopped-off head preheater at kiln tail pyrolysis oven top is lower, and chloride ion content is generally 2.6g/Nm ³, process cost performance carried out to the chlorion in heat smoke too low, loses more than gain.

Carbide slag is as a kind of industrial residue, and generation is large, appropriation of land contaminated environment.Carbide slag water content is large, and chloride ion content is high, and its oven dry hear rate is higher.When utilizing cement rotary kiln to dispose carbide slag on a large scale, the temperature of the flue gas of the chopped-off head preheater outlet at kiln tail pyrolysis oven top often can not meet drying requirement, and when adopting coal-fired afterburning stove as oven dry thermal source, the thermal efficiency is lower, coal consumption is higher, and the method also can have a negative impact to the oven dry thermal efficiency of drying crushing system.On the other hand, the chlorine ion concentration in carbide slag is higher, and mean concentration, 0.03%, controls even can not reach 0.1%-0.4% at that time, makes chlorine ion concentration in kiln raw material higher.In raw material, the higher meeting of harmful components such as chlorion causes rotary system skinning, blocking, and the running of kiln condition is abnormal, and in grog, chlorine ion concentration is higher, affects clinker quality.

Summary of the invention

The technical problem that the present invention will solve is to provide a kind of method of getting wind heat-obtaining from rotary kiln, the heat smoke temperature that the method obtains is higher, alternative materials large for water content can be dried by the heat smoke of higher temperature, and the alternative materials after oven dry can meet the technological requirement of producing cement; Chlorion in alternative materials can also be discharged by the method.

Another technical problem that the present invention will solve is to provide a kind of rotary system of desirable wind heat-obtaining, the heat smoke temperature that this system obtains is higher, alternative materials large for water content can be dried by the heat smoke of higher temperature, and the alternative materials after oven dry can meet the technological requirement of producing cement; Chlorion in alternative materials can also be discharged by this system.

With regard to method, in order to solve an above-mentioned technical problem, the invention provides a kind of method of getting wind heat-obtaining from rotary kiln, taken out by heat smoke from rotary kiln, described heat smoke takes out from the smoke-box of described rotary kiln.

The heat smoke taken out from described rotary kiln smoke-box is sent to drying system, and/or, by the heat smoke taken out from described rotary kiln smoke-box for the preparation of potash fertilizer or be used for the raw material of industry.

The heat smoke taken out from described rotary kiln smoke-box is being sent to drying system, and/or, the heat smoke taken out from described rotary kiln smoke-box is first carried out dust removal process and/or cooling processing for the preparation of before potash fertilizer.

Described dust removal process comprises 3-stage dust-removal process, described cooling processing comprises three grades of cooling processing, first order dust removal process and first order cooling processing are first carried out to the heat smoke taken out from described rotary kiln smoke-box, carry out second level dust removal process again, then drying system is sent to, the kiln ash collected after first order dust removal process is turned back in rotary kiln, the kiln collected after the dust removal process of second level ash is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven top, or, first order dust removal process and first order cooling processing are first carried out to the heat smoke taken out from described rotary kiln smoke-box, carry out second level dust removal process and second level cooling processing again, then, carry out third level cooling processing and third level dust removal process, the kiln ash collected after first order dust removal process is turned back in rotary kiln, the kiln collected after the dust removal process of second level ash is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven top, by grey for the preparation of potash fertilizer for the kiln collected after third level dust removal process, the heat smoke obtained after third level dust removal process is sent to the grate-cooler of rotary kiln end, or, first order dust removal process and first order cooling processing are first carried out to the heat smoke taken out from described rotary kiln smoke-box, carry out second level dust removal process again, the kiln ash collected after first order dust removal process is turned back in rotary kiln, the kiln collected after the dust removal process of second level ash is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven top, then, a part in the heat smoke obtained after the dust removal process of the second level is sent to drying system, simultaneously, another part in the heat smoke obtained after the dust removal process of the second level is carried out second level cooling processing, carry out third level cooling processing and third level dust removal process again, by grey for the preparation of potash fertilizer for the kiln collected after third level dust removal process, the heat smoke obtained after third level dust removal process is sent to the grate-cooler of rotary kiln end.

The method that the present invention gets wind heat-obtaining from rotary kiln compared with prior art has following beneficial effect.

1, the technical program technological means of taking out from the smoke-box of described rotary kiln owing to have employed described heat smoke, so, the heat smoke that temperature is higher can be obtained, the temperature of heat smoke is 950 degrees Celsius to 1200 degrees Celsius, alternative materials large for water content can be dried by the heat smoke of higher temperature, coal-fired afterburning stove need not be adopted as oven dry thermal source, widely economize energy, and the alternative materials after oven dry can meet the technological requirement of producing cement; The method also helps discharges the chlorion in alternative materials, the chlorine ion concentration in heat smoke can reach 2.6g/Nm ³, for improvement below creates advantage.

2, the heat smoke taken out from described rotary kiln smoke-box is sent to drying system owing to have employed by the technical program, and/or, by the heat smoke that takes out from described rotary kiln smoke-box for the preparation of potash fertilizer or the technological means being used for the raw material of industry, so, heat smoke can be utilized according to actual conditions, play the not same-action of heat smoke, both make use of the calorific value in heat smoke, again the chlorion in heat smoke is processed, change harmful to treasure.

3, the heat smoke taken out from described rotary kiln smoke-box is being sent to drying system owing to have employed by the technical program, and/or, by the heat smoke taken out from described rotary kiln smoke-box for the preparation of the technological means of first carrying out dust removal process and/or cooling processing before potash fertilizer, so, first achloride can be separated out, be conducive to improving the quality preparing potash fertilizer.

4, the technical program comprises 3-stage dust-removal process owing to have employed described dust removal process, described cooling processing comprises three grades of cooling processing, first order dust removal process and first order cooling processing are first carried out to the heat smoke taken out from described rotary kiln smoke-box, carry out second level dust removal process again, then drying system is sent to, the kiln ash collected after first order dust removal process is turned back in rotary kiln, the kiln collected after the dust removal process of second level ash is sent to the technological means in the final stage preheater discharge duct at kiln tail pyrolysis oven top, so, not only the alternative materials large to water content can carry out effective drying and processing, and, the cigarette ash of separating out from heat smoke (achloride) can also be sent in kiln as cement raw material and make cement, substantially reduce air pollution.When employing first carries out first order dust removal process and first order cooling processing to the heat smoke taken out from described rotary kiln smoke-box, carry out second level dust removal process and second level cooling processing again, then, carry out third level cooling processing and third level dust removal process, the kiln ash collected after first order dust removal process is turned back in rotary kiln, the kiln collected after the dust removal process of second level ash is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven top, by grey for the preparation of potash fertilizer for the kiln collected after third level dust removal process, when the heat smoke obtained after third level dust removal process being sent to the technological means of the grate-cooler of rotary kiln end, not only can produce high-quality potash fertilizer, and, the cigarette ash of separating out from heat smoke (achloride) can also be sent in kiln as cement raw material and make cement, air pollution can be avoided.When employing first carries out first order dust removal process and first order cooling processing to the heat smoke taken out from described rotary kiln smoke-box, carry out second level dust removal process again, the kiln ash collected after first order dust removal process is turned back in rotary kiln, the kiln collected after the dust removal process of second level ash is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven top, then, a part in the heat smoke obtained after the dust removal process of the second level is sent to drying system, simultaneously, another part in the heat smoke obtained after the dust removal process of the second level is carried out second level cooling processing, carry out third level cooling processing and third level dust removal process again, by grey for the preparation of potash fertilizer for the kiln collected after third level dust removal process, when the heat smoke obtained after third level dust removal process being sent to the technological means of the grate-cooler of rotary kiln end, not only can produce high-quality potash fertilizer, and, pollutant in heat smoke can also be sent in kiln and dispose, can reduce or avoid air pollution.

With regard to product, in order to solve another technical problem above-mentioned, the invention provides a kind of rotary system of desirable wind heat-obtaining, comprising rotary kiln, the kiln tail of described rotary kiln is communicated with pyrolysis oven by smoke-box, and the lateral wall of described rotary kiln smoke-box is provided with heat smoke outlet.

Heat smoke outlet and the heat smoke inlet communication getting wind heat-obtaining device of described smoke-box, described wind heat-obtaining device of getting has first order dust arrester and first order cooling device, the described heat smoke getting wind heat-obtaining device exports the heat smoke inlet communication with second level dust arrester, the heat smoke outlet of described second level dust arrester and the heat smoke inlet communication of drying system.

Described wind heat-obtaining device of getting comprises urceolus and inner core, described urceolus is enclosed within described inner core, looping space between the inwall of described urceolus and the outer wall of described inner core, the gas outlet end of described inner core and one end of described urceolus are tightly connected, air outlet is formed between the air inlet end of described inner core and the other end of described urceolus, the other end of described urceolus is communicated with the heat smoke exit seal of described smoke-box, and the sidewall of described urceolus is provided with tangent air inlet.

The shape of described tangent air inlet is elongated, the length direction of described tangent air inlet is identical with the length direction of described urceolus, the length of described tangent air inlet is corresponding to the length of described urceolus, described strip tangent air inlet is configured with reducing air inlet joint, the air outlet shape of described reducing air inlet joint is elongated, and the air inlet shape of described reducing air inlet joint is rounded; Or described tangent air inlet is offset to one end of described urceolus, be provided with helical duct in described annular space, one end of helical duct described in described tangent air inlet is communicated with, the other end of described helical duct and the heat smoke outlet of described smoke-box.

The circular in cross-section of described urceolus, described inner core circular in cross-section, the distance between described outer tube inner wall with described inner tank theca is equal everywhere; Or, the cross section of described urceolus is the not isometrical circle of disloyalty, described inner core cross section is the isometrical circle of disloyalty, and from the circumference of advancing along air intake near tangent air inlet to away from tangent air inlet place, the distance between described outer tube inner wall and described inner tank theca reduces gradually; Or, the cross section of described urceolus is the not isometrical circle of three-core, described inner core cross section is the isometrical circle of disloyalty, near tangent air inlet along the circumference of air intake to away from tangent air inlet place, the distance between described outer tube inner wall and described inner tank theca reduces gradually.

The heat smoke outlet of described second level dust arrester and the heat smoke inlet communication of third level cooling device, the heat smoke outlet of described third level cooling device and the heat smoke inlet communication of third level dust arrester, the soot door of described third level dust arrester and the cigarette ash inlet communication of kiln ash silo, the heat smoke outlet of described second level dust arrester is provided with second level cooling device with the heat smoke import of third level cooling device.

The rotary system of the present invention's desirable wind heat-obtaining compared with prior art has following beneficial effect.

1, the technical program due to the lateral wall that have employed described rotary kiln smoke-box be provided with heat smoke outlet technological means, so, the heat smoke that temperature is higher can be obtained, the temperature of heat smoke is 950 degrees Celsius to 1200 degrees Celsius, alternative materials large for water content can be dried by the heat smoke of higher temperature, coal-fired afterburning stove need not be adopted as oven dry thermal source, widely economize energy, and the alternative materials after oven dry can meet the technological requirement of producing cement; The method also helps discharges the chlorion in alternative materials, and the chlorine ion concentration in heat smoke can reach 2.6g/Nm ³, for improvement below creates advantage.

2, the technical program is owing to have employed the heat smoke outlet of described smoke-box and the heat smoke inlet communication getting wind heat-obtaining device, described wind heat-obtaining device of getting has first order dust arrester and first order cooling device, the described heat smoke getting wind heat-obtaining device exports the heat smoke inlet communication with second level dust arrester, the heat smoke outlet of described second level dust arrester and the technological means of the heat smoke inlet communication of drying system, so, heat smoke can be utilized according to actual conditions, play the not same-action of heat smoke, both make use of the heat in heat smoke, achloride in heat smoke can be separated out again and be separated, achloride is used for cement raw material.

3, the technical program is got wind heat-obtaining device and is comprised urceolus and inner core described in have employed, described urceolus is enclosed within described inner core, looping space between the inwall of described urceolus and the outer wall of described inner core, the gas outlet end of described inner core and one end of described urceolus are tightly connected, air outlet is formed between the air inlet end of described inner core and the other end of described urceolus, the other end of described urceolus is communicated with the heat smoke exit seal of described smoke-box, the sidewall of described urceolus is provided with the technological means of tangent air inlet, so, get the negative pressure extracting heat smoke that wind heat-obtaining device can rely on present invention process system to be formed, a cooling blower is adopted air to be blasted the tangent air inlet getting wind heat-obtaining device, under the guiding of air annular space between the inwall getting wind heat-obtaining device urceolus and the outer wall of inner core, enter rotatably and get wind heat-obtaining device, the heat smoke taken out is carried out to the cooling of varying degree, and by the effect of eddy flow, big particle in the heat smoke of taking-up is carried out cyclonic separation, return in kiln system.

4, the technical program due to the shape that have employed described tangent air inlet elongated, the length direction of described tangent air inlet is identical with the length direction of described urceolus, the length of described tangent air inlet is corresponding to the length of described urceolus, described strip tangent air inlet is configured with reducing air inlet joint, the air outlet shape of described reducing air inlet joint is elongated, and the air inlet shape of described reducing air inlet joint is rounded; Or, described tangent air inlet is offset to one end of described urceolus, helical duct is provided with in described annular space, one end of helical duct described in described tangent air inlet is communicated with, the technological means of the other end of described helical duct and the heat smoke outlet of described smoke-box, so, can produce according to the demand of different client and different get wind heat-obtaining device.

5, the technical program is owing to have employed the circular in cross-section of described urceolus, described inner core circular in cross-section, the technological means that distance between described outer tube inner wall with described inner tank theca is equal everywhere, so, the structure of getting wind heat-obtaining device is simpler, production and processing is easier to, and production cost is lower.When the cross section adopting described urceolus is the not isometrical circle of disloyalty, described inner core cross section is the isometrical circle of disloyalty, from the circumference of advancing along air intake near tangent air inlet to away from tangent air inlet place, during the technological means that the distance between described outer tube inner wall and described inner tank theca reduces gradually, be conducive to improving the swirl velocity of air in annular space, and then, be conducive to improving the heat smoke swirl velocity taken out, finally, be conducive to big particle in heat smoke to be separated from heat smoke.When the cross section adopting described urceolus is the not isometrical circle of three-core, described inner core cross section is the isometrical circle of disloyalty, from near tangent air inlet along the circumference of air intake to away from tangent air inlet place, during the technological means that the distance between described outer tube inner wall and described inner tank theca reduces gradually, the swirl velocity of air in annular space can be improved further, and then, the heat smoke swirl velocity of taking-up can be improved further, finally, further big particles more in heat smoke are separated from heat smoke.

6, the technical program is owing to have employed heat smoke outlet and the heat smoke inlet communication of third level cooling device of described second level dust arrester, the heat smoke outlet of described third level cooling device and the heat smoke inlet communication of third level dust arrester, the soot door of described third level dust arrester and the cigarette ash inlet communication of kiln ash silo, heat smoke outlet and the heat smoke import of third level cooling device of described second level dust arrester are provided with the technological means of second level cooling device, so, not only the alternative materials large to water content can carry out effective drying and processing, and, high-quality potash fertilizer can also be produced.

Accompanying drawing explanation

Be described in further detail below in conjunction with the rotary system of the drawings and specific embodiments to method and desirable wind heat-obtaining that the present invention gets wind heat-obtaining from rotary kiln.

Fig. 1 is the overall structure principle schematic of the rotary system of the desirable wind heat-obtaining of the present invention.

Fig. 2 is the structural representation that in Fig. 1, the first gets wind heat-obtaining device.

Fig. 3 be in Fig. 2 B to the structural representation of gas outlet.

Fig. 4 is the structural representation that in Fig. 2, the first inner core and urceolus are positioned at A-A line.

Fig. 5 is the structural representation that in Fig. 2, the second inner core and urceolus are positioned at A-A line.

Fig. 6 is the structural representation that in Fig. 2, the third inner core and urceolus are positioned at A-A line.

Fig. 7 be in Fig. 4, Fig. 5 or Fig. 6 reducing air inlet joint C to structural representation.

Fig. 8 is the structural representation that in Fig. 1, the second gets wind heat-obtaining device.

Description of reference numerals is as follows.

0 ~ rotary kiln.

0-1 ~ pyrolysis oven.

0-2 ~ smoke-box.

0-3 ~ air bubble.

0-4 ~ air tank.

0-5 ~ heat smoke outlet.

0-6 ~ preheater.

1 ~ get wind heat-obtaining device.

1-1 ~ urceolus.

1-2 ~ inner core.

1-3 ~ transition conduit.

1-4 ~ seal member.

1-5 ~ tangent air inlet.

1-6 ~ reducing air inlet joint.

1-7 ~ tee pipe coupling.

1-8 ~ gas outlet.

1-9 ~ inspection door.

1-10 ~ air bubble.

1-11 ~ helical duct.

2 ~ quench air fan.

2-1 ~ stop valve.

2-2 ~ stop valve.

3 ~ cyclone separator.

3-1 ~ stop valve.

3-2 ~ bis-flap valve.

4 ~ drying system.

4-1 ~ stop valve.

5 ~ cold wind butterfly valve.

6 ~ multitube cooler.

6-1 ~ stop valve.

6-2 ~ cold wind butterfly valve.

6-3 ~ bis-flap valve.

6-4 ~ conveying worm.

7 ~ tri-grades of bag filters.

7-1 ~ stop valve.

7-2 ~ revolution discharger.

7-3 ~ conveying worm.

8 ~ exhaust blower.

8-1 ~ stop valve.

9 ~ grate-cooler.

9-1 ~ cold wind butterfly valve.

9-2 ~ exhaust blower.

10 ~ kiln ash silo.

10-1 ~ nozzle.

10-2 ~ roots blower.

10-3 ~ stop valve.

10-4 ~ discharger in bulk.

10-5 ~ pass through materials device.

10-6 ~ fertilizer transport vehicle.

10-7 ~ revolution discharger.

10-8 ~ revolution discharger.

10-9 ~ single-stage bag filter.

10-10 ~ exhaust blower.

10-11 ~ revolution discharger.

Detailed description of the invention

As shown in Figure 1, the invention provides a kind of method of getting wind heat-obtaining from rotary kiln, taken out by heat smoke from rotary kiln 0, described heat smoke takes out from the smoke-box 0-2 of described rotary kiln 0 kiln tail.

Preferred as one, the heat smoke temperature of taking out from described rotary kiln 0 kiln tail smoke-box is 950 degrees Celsius to 1200 degrees Celsius.The chlorion in smoke-box 0-2 is conducive to be discharged more like this.

The technological means that present embodiment is taken out from the smoke-box of described rotary kiln owing to have employed described heat smoke, so, the heat smoke that temperature is higher can be obtained, the temperature of heat smoke is 950 degrees Celsius to 1200 degrees Celsius, alternative materials large for water content can be dried by the heat smoke of higher temperature, coal-fired afterburning stove need not be adopted as oven dry thermal source, widely economize energy, and the alternative materials after oven dry can meet the technological requirement of producing cement; The method also helps discharges the chlorion in alternative materials, the chlorine ion concentration in heat smoke can reach 2.6g/Nm ³, for improvement below creates advantage.

One as present embodiment is improved, as shown in Figure 1, the heat smoke taken out from described rotary kiln 0 kiln tail smoke-box 0-2 is sent to drying system 4, or, by the heat smoke taken out from described rotary kiln 0 kiln tail smoke-box 0-2 for the preparation of potash fertilizer or be used for the raw material of industry, certainly, can also be that a part for the heat smoke taken out from described rotary kiln 0 kiln tail smoke-box 0-2 is sent to drying system 4, meanwhile, by the heat smoke another part taken out from described rotary kiln 0 kiln tail smoke-box 0-2 for the preparation of potash fertilizer or be used for the raw material of industry.

The heat smoke taken out from described rotary kiln smoke-box is sent to drying system owing to have employed by present embodiment, and/or, by the heat smoke that takes out from described rotary kiln smoke-box for the preparation of potash fertilizer or the technological means being used for the raw material of industry, so, heat smoke can be utilized according to actual conditions, play the not same-action of heat smoke, both make use of the calorific value in heat smoke, again the chlorion in heat smoke is processed, change harmful to treasure.

Further improve as present embodiment, as shown in Figure 1, the heat smoke taken out from described rotary kiln 0 kiln tail smoke-box 0-2 is being sent to drying system 4, and/or, the heat smoke taken out from described rotary kiln 0 kiln tail smoke-box 0-2 is first carried out dust removal process and/or cooling processing for the preparation of before potash fertilizer.

Preferred as one, described drying system 4 dries crushing system and/or raw material grinding system.Like this, can design with carbide slag is the cement kiln production line of raw material.

The heat smoke taken out from described rotary kiln smoke-box is being sent to drying system owing to have employed by present embodiment, and/or, by the heat smoke taken out from described rotary kiln smoke-box for the preparation of the technological means of first carrying out dust removal process and/or cooling processing before potash fertilizer, so, first achloride can be separated out, be conducive to improving the quality preparing potash fertilizer.

Further improve as present embodiment, as shown in Figure 1, described dust removal process comprises 3-stage dust-removal process, described cooling processing comprises three grades of cooling processing, first order dust removal process and first order cooling processing are first carried out to the heat smoke taken out from described rotary kiln 0 kiln tail smoke-box 0-2, carry out second level dust removal process again, then drying system 4 is sent to, the kiln ash collected after first order dust removal process is turned back in rotary kiln 0, the kiln collected after the dust removal process of second level ash is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven 0-1 top.Certainly, also can be, first order dust removal process and first order cooling processing are first carried out to the heat smoke taken out from described rotary kiln 0 kiln tail smoke-box 0-2, carry out second level dust removal process and second level cooling processing again, then, carry out third level cooling processing and third level dust removal process, the kiln ash collected after first order dust removal process is turned back in rotary kiln 0, the kiln collected after the dust removal process of second level ash is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven 0-1 top, by grey for the preparation of potash fertilizer for the kiln collected after third level dust removal process, the heat smoke obtained after third level dust removal process is sent to the grate-cooler 9 of rotary kiln 0 kiln hood.Can also be, first order dust removal process and first order cooling processing are first carried out to the heat smoke taken out from described rotary kiln 0 kiln tail smoke-box 0-2, carry out second level dust removal process again, the kiln ash collected after first order dust removal process is turned back in rotary kiln 0, the kiln collected after the dust removal process of second level ash is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven 0-1 top, then, a part in the heat smoke obtained after the dust removal process of the second level is sent to drying system 4, simultaneously, another part in the heat smoke obtained after the dust removal process of the second level is carried out second level cooling processing, carry out third level cooling processing and third level dust removal process again, by grey for the preparation of potash fertilizer for the kiln collected after third level dust removal process, the heat smoke obtained after third level dust removal process is sent to the grate-cooler 9 of rotary kiln 0 kiln hood.

Preferred as one, the heat smoke temperature after first order cooling processing is 550 degrees Celsius to 700 degrees Celsius.Like this, be conducive to separating out achloride, and achloride is entered kiln as cement raw material.

Heat smoke temperature after the cooling processing of the second level is 320 degrees Celsius to 400 degrees Celsius.Like this, can be third level cooling processing and prepare, greatly improve the amount of precipitation of chlorion.

Heat smoke temperature after third level cooling processing is 130 degrees Celsius to 170 degrees Celsius.Like this, the chlorion in heat smoke can be separated out widely.

Described first order dust removal process and first order cooling processing use there is whirlwind cooling and dedusting get wind heat-obtaining device 1, described first order dust removal process to be spinned motion by whirlwind air driven heat smoke, kiln ash in heat smoke is separated, and described first order cooling processing is mixed air to heat smoke and is carried out.Like this, be conducive to isolated achloride to be sent to cement kiln.

The heat smoke air quantity taken out from described rotary kiln 0 kiln tail smoke-box 0-2 is the 3%-25% of rotary kiln 0 kiln tail smoke-box total blast volume.Like this, from rotary system, chlorion can be discharged by heat removal.

Described second level dust removal process is undertaken by cyclone separator 3, and by changing the course of heat smoke, the kiln ash in heat smoke is separated, and described second level cooling processing is mixed air by cold wind butterfly valve 5 pairs of heat smoke and carried out.Like this, heat smoke temperature can be made to reduce further.

Described third level cooling processing is undertaken by multitube cooler 6, adopt natural air and heat smoke to carry out the type of cooling of surface heat exchange at the heat dissipation interface of air cooling multitube cooler, described third level dust removal process is undertaken by three grades of bag filters 7.Like this, flue-gas temperature can be reduced when not increasing air quantity, meeting dust-precipitator instructions for use.

The kiln ash collected after third level dust removal process is stored in kiln ash silo 10.Like this, the thin ash being rich in chlorion that deduster can be made to collect is sent in kiln ash silo.

The kiln ash collected in the cooling processing process of the second level is sent in described kiln ash silo 10.Like this, system can be discharged containing the kiln ash that harmful constituent content is higher.

The flue gas of discharging in the decompression ash overflow port from described kiln ash silo 10 is carried out dust removal process by single-stage bag filter 10-9, and the kiln ash collected after dust removal process is sent in described kiln ash silo 10, and the uncontaminated gases obtained after dust removal process is discharged in air.Like this, tiny structure in kiln ash silo can be kept, be beneficial to kiln ash and put in storage.

Kiln ash in described kiln ash silo 10 is by passing through materials device 10-5 discharging, dust removal process is carried out by described single-stage bag filter 10-9 from the described hot gas passing through materials device 10-5 discharge, the kiln ash collected after dust removal process is sent in described kiln ash silo 10, and the uncontaminated gases obtained after dust removal process is discharged in air.Like this, achieve pass through materials device tiny structure run.

The wind speed of heat smoke outlet 0-5: 15-40m/s;

Get the wind speed of wind heat-obtaining device 1 tangent air inlet 1-5: 12-35m/s;

Get wind heat-obtaining device 1 imaginary cross section wind speed: 6m/s-13m/s;

Get wind heat-obtaining device 1 SR: 400Pa-1300Pa;

Get wind heat-obtaining device 1 system draw ratio: 3-7 doubly;

Get wind heat-obtaining device 1 heat smoke outlet 0-5 diameter and inner core 1-2 diameter ratio: 0.6-0.71;

Go out to get the air velocity duct of wind heat-obtaining device 1 gas outlet 1-8: 12m/s-23 m/s;

The length of getting wind heat-obtaining device 1 tangent air inlet 1-5 compares with width: 1-12 doubly.

Present embodiment comprises 3-stage dust-removal process owing to have employed described dust removal process, described cooling processing comprises three grades of cooling processing, first order dust removal process and first order cooling processing are first carried out to the heat smoke taken out from described rotary kiln smoke-box, carry out second level dust removal process again, then drying system is sent to, the kiln ash collected after first order dust removal process is turned back in rotary kiln, the kiln collected after the dust removal process of second level ash is sent to the technological means in the final stage preheater discharge duct at kiln tail pyrolysis oven top, so, not only the alternative materials large to water content can carry out effective drying and processing, and, the cigarette ash of separating out from heat smoke (achloride) can also be sent in kiln as cement raw material and make cement, substantially reduce air pollution.When employing first carries out first order dust removal process and first order cooling processing to the heat smoke taken out from described rotary kiln smoke-box, carry out second level dust removal process and second level cooling processing again, then, carry out third level cooling processing and third level dust removal process, the kiln ash collected after first order dust removal process is turned back in rotary kiln, the kiln collected after the dust removal process of second level ash is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven top, by grey for the preparation of potash fertilizer for the kiln collected after third level dust removal process, when the heat smoke obtained after third level dust removal process being sent to the technological means of the grate-cooler of rotary kiln end, the pollutant of separating out from heat smoke can be sent in kiln and dispose, air pollution can be avoided.When employing first carries out first order dust removal process and first order cooling processing to the heat smoke taken out from described rotary kiln smoke-box, carry out second level dust removal process again, the kiln ash collected after first order dust removal process is turned back in rotary kiln, the kiln collected after the dust removal process of second level ash is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven top, then, a part in the heat smoke obtained after the dust removal process of the second level is sent to drying system, simultaneously, another part in the heat smoke obtained after the dust removal process of the second level is carried out second level cooling processing, carry out third level cooling processing and third level dust removal process again, by grey for the preparation of potash fertilizer for the kiln collected after third level dust removal process, when the heat smoke obtained after third level dust removal process being sent to the technological means of the grate-cooler of rotary kiln end, the cigarette ash of separating out from heat smoke (achloride) can be sent in kiln as cement raw material and make cement, can reduce or avoid air pollution.

As shown in Figure 1, present embodiments provide for a kind of rotary system of desirable wind heat-obtaining, comprise rotary kiln 0, the kiln tail of described rotary kiln 0 is communicated with pyrolysis oven 0-1 by smoke-box 0-2, and the lateral wall of described rotary kiln 0 kiln tail smoke-box 0-2 is provided with heat smoke outlet 0-5.

Preferred as one, the elevation angle of described smoke-box 0-2 heat smoke outlet 0-5 is 30 degree to 60 degree.Like this, returning of cigarette ash is conducive to.

Further, the elevation angle of described smoke-box 0-2 heat smoke outlet 0-5 is 45 degree.Like this, cigarette ash can be made to return more smooth and easy.

As can be seen from Fig. 1 and Fig. 8, the low profile of described smoke-box 0-2 is cylinder, and the top profile of described smoke-box 0-2 is butt upper cone, and the heat smoke outlet 0-5 of described smoke-box 0-2 is positioned at the top of described smoke-box 0-2.Certainly, also can be as shown in Figure 2, the heat smoke outlet 0-5 of described smoke-box 0-2 be positioned at the bottom of described smoke-box 0-2.Like this, according to the production run state of different rotary kiln, the regional location that harmful concentration of element is the highest can be determined, determine to get wind heat-obtaining device in the position of smoke-box.

Preferred as one, the drift angle of described butt upper cone is 30 degree to 60 degree.Like this, can according to cement plant field condition flexible arrangement.

Further, the drift angle of described butt upper cone is 45 degree.Like this, can ensure to be greater than material angle of repose.

Again further, described smoke-box 0-2 is provided with air bubble 0-3, and described air bubble 0-3 is communicated with air tank 0-4.Like this, can prevent smoke-box from blocking.

Present embodiment due to the lateral wall that have employed described rotary kiln smoke-box be provided with heat smoke outlet technological means, so, the heat smoke that temperature is higher can be obtained, the temperature of heat smoke is 950 degrees Celsius to 1200 degrees Celsius, alternative materials large for water content can be dried by the heat smoke of higher temperature, coal-fired afterburning stove need not be adopted as oven dry thermal source, widely economize energy, and the alternative materials after oven dry can meet the technological requirement of producing cement; The method also helps discharges the chlorion in alternative materials, and the chlorine ion concentration in heat smoke can reach 2.6g/Nm ³, for improvement below creates advantage.

One as present embodiment is improved, as depicted in figs. 1 and 2, heat smoke outlet 0-5 and the heat smoke inlet communication getting wind heat-obtaining device 1 of described smoke-box 0-2, described wind heat-obtaining device 1 of getting has first order dust arrester and first order cooling device, the described heat smoke getting wind heat-obtaining device 1 exports the heat smoke inlet communication with second level dust arrester, the heat smoke outlet of described second level dust arrester and the heat smoke inlet communication of drying system 4.

Present embodiment is owing to have employed the heat smoke outlet of described smoke-box and the heat smoke inlet communication getting wind heat-obtaining device, described wind heat-obtaining device of getting has first order dust arrester and first order cooling device, the described heat smoke getting wind heat-obtaining device exports the heat smoke inlet communication with second level dust arrester, the heat smoke outlet of described second level dust arrester and the technological means of the heat smoke inlet communication of drying system, so, heat smoke can be utilized according to actual conditions, play the not same-action of heat smoke, both make use of the heat in heat smoke, achloride in heat smoke can be separated out again and be separated, achloride is used for cement raw material.

Further improve as present embodiment, as shown in Figure 2, described wind heat-obtaining device 1 of getting comprises urceolus 1-1 and inner core 1-2, described urceolus 1-1 is enclosed within described inner core 1-2, looping space between the inwall of described urceolus 1-1 and the outer wall of described inner core 1-2, the gas outlet end of described inner core 1-2 and one end of described urceolus 1-1 are tightly connected, air outlet is formed between the air inlet end of described inner core 1-2 and the other end of described urceolus 1-1, the other end and the heat smoke of described smoke-box 0-2 of described urceolus 1-1 export 0-5 and seal and be communicated with, the sidewall of described urceolus 1-1 is provided with tangent air inlet 1-5.

Present embodiment is got wind heat-obtaining device and is comprised urceolus and inner core described in have employed, described urceolus is enclosed within described inner core, looping space between the inwall of described urceolus and the outer wall of described inner core, the gas outlet end of described inner core and one end of described urceolus are tightly connected, air outlet is formed between the air inlet end of described inner core and the other end of described urceolus, the other end of described urceolus is communicated with the heat smoke exit seal of described smoke-box, the sidewall of described urceolus is provided with the technological means of tangent air inlet, so, get the negative pressure extracting heat smoke that wind heat-obtaining device can rely on present invention process system to be formed, a cooling blower is adopted air to be blasted the tangent air inlet getting wind heat-obtaining device, under the guiding of air annular space between the inwall getting wind heat-obtaining device urceolus and the outer wall of inner core, enter rotatably and get wind heat-obtaining device, the heat smoke taken out is carried out to the cooling of varying degree, and by the effect of eddy flow, big particle in the heat smoke of taking-up is carried out cyclonic separation, return in kiln system.

Further improve as present embodiment, as shown in Figure 2, the shape of described tangent air inlet 1-5 is elongated, the length direction of described tangent air inlet 1-5 is identical with the length direction of described urceolus 1-1, the length of described tangent air inlet 1-5 is corresponding to the length of described urceolus 1-1, described strip tangent air inlet 1-5 is configured with reducing air inlet joint 1-6, the air outlet shape of described reducing air inlet joint 1-6 is elongated, as can be seen from Figure 7, the air inlet shape of described reducing air inlet joint 1-6 is rounded and have flange.Certainly, also can be as shown in Figure 8, described tangent air inlet 1-5 is offset to one end of described urceolus 1-1, helical duct 1-11 is provided with in described annular space, the one end of helical duct 1-11 described in described tangent air inlet 1-5 is communicated with, and the other end of described helical duct 1-11 exports 0-5 with the heat smoke of described smoke-box 0-2 and is communicated with.

Preferred as one, the length of described strip tangent air inlet 1-5 is 1-12 with width ratio; Described helical duct 1-11 is made up of the flight be arranged in described annular space and the inwall of described urceolus 1-1 and the outer wall of described inner core 1-2.Certainly, also can be that described helical duct 1-11 is made up of the helical pipe be arranged in described annular space, and described helical pipe is centered around the outer wall of described inner core 1-2.

Present embodiment due to the shape that have employed described tangent air inlet elongated, the length direction of described tangent air inlet is identical with the length direction of described urceolus, the length of described tangent air inlet is corresponding to the length of described urceolus, described strip tangent air inlet is configured with reducing air inlet joint, the air outlet shape of described reducing air inlet joint is elongated, and the air inlet shape of described reducing air inlet joint is rounded; Or, described tangent air inlet is offset to one end of described urceolus, helical duct is provided with in described annular space, one end of helical duct described in described tangent air inlet is communicated with, the technological means of the other end of described helical duct and the heat smoke outlet of described smoke-box, so, can produce according to the demand of different client and different get wind heat-obtaining device.

Also further improve as present embodiment, as shown in Figure 4, the circular in cross-section of described urceolus 1-1, described inner core 1-2 circular in cross-section, the distance between described urceolus 1-1 inwall with described inner core 1-2 outer wall is equal everywhere.As can be seen from Figure 4, the cross section of described urceolus 1-1 and the cross section of inner core 1-2 form concentric circles.Certainly, also can be as shown in Figure 5, the cross section of described urceolus 1-1 is the not isometrical circle of disloyalty, described inner core 1-2 cross section is the isometrical circle of disloyalty, from the circumference of advancing along air intake near tangent air inlet 1-5 to away from tangent air inlet 1-5 place, the distance between described urceolus 1-1 inwall and described inner core 1-2 outer wall reduces gradually.As can be seen from Figure 5, the closed bulge loop shape that the shape of described inner core 1-2 cross section is surrounded by two (very short) isometric parallel lines and two sections of isometrical semi arches, the cross section of described urceolus 1-1 is made up of left semicircle arc and right semi-circle arc, the radius of described left semicircle arc is less than the radius of described right semi-circle arc, the lower end of described left semicircle arc is docked with the lower end of described right semi-circle arc is tangent, the upper end of described left semicircle arc and the upper end of described right semi-circle arc form described tangent air inlet 1-5, the center of circle of described left semicircle arc is positioned on the mid point of described two sections of isometrical semi arches two circle center line connectings.Can also be as shown in Figure 6, the cross section of described urceolus 1-1 is the not isometrical circle of three-core, described inner core 1-2 cross section is the isometrical circle of disloyalty, from near tangent air inlet 1-5 along the circumference of air intake to away from tangent air inlet 1-5 place, the distance between described urceolus 1-1 inwall and described inner core 1-2 outer wall reduces gradually.As can be seen from Figure 6, the closed bulge loop shape that the shape of described inner core 1-2 cross section is surrounded by two (very short) isometric parallel lines and two sections of isometrical semi arches, the cross section of described urceolus 1-1 is by upper left corner circular arc, lower left corner circular arc and right semi-circle arc are formed, the radius of described upper left corner circular arc is less than the radius of described lower left corner circular arc, the radius of described lower left corner circular arc is less than the radius of described right semi-circle arc, the lower end of described upper left corner circular arc is docked with the upper end of described lower left corner circular arc is tangent, the lower end of described lower left corner circular arc is docked with the lower end of described right semi-circle arc is tangent, the upper end of described upper left corner circular arc and the upper end of described right semi-circle arc form described tangent air inlet 1-5, the center of circle of described upper left corner circular arc is positioned on the mid point of described two sections of isometrical semi arches two circle center line connectings, the center of circle of described lower left corner circular arc is arranged on the center of circle of the right semi-circle arc of described two sections of isometrical semi arches.

Preferred as one, the gas outlet end of described inner core 1-2 and one end of described urceolus 1-1 are tightly connected and are tightly connected by flange arrangement.Like this, both ensured sealing effectiveness, again can so that detachable maintaining.

Further, the other end and the heat smoke of described smoke-box 0-2 of described urceolus 1-1 are exported 0-5 and seal to be communicated with to be sealed by transition conduit 1-3 and be communicated with, and the circumference of described transition conduit 1-3 is distributed with air bubble 1-10.Can prevent heat smoke from exporting 0-5 blocking like this.

The gas outlet end of described inner core 1-2 is provided with tee pipe coupling 1-7, the shape of described tee pipe coupling 1-7 in " t" font; one end of described tee pipe coupling 1-7 is communicated with the gas outlet end of described inner core 1-2; the other end of described tee pipe coupling 1-7 is inspection socket; described inspection socket is configured with inspection door 1-9; the 3rd end of described tee pipe coupling 1-7 is gas outlet 1-8; as can be seen from Figure 3, and described gas outlet 1-8 is circular and has flange.30 degree to 60 degree angles are formed between 3rd end of described tee pipe coupling 1-7 and the other end of described tee pipe coupling 1-7.Like this, the installation of pipeline is conducive to.

Described tangent air inlet 1-5 is communicated with quench air fan 2.Like this, quenching wind rotation direction can enter and get wind heat-obtaining device.

Stop valve 2-1 is serially connected with between described tangent air inlet 1-5 and described quench air fan 2.Like this, exhaust blower and system can be disconnected when bypass system is stopped using.

The air inlet of described quench air fan 2 is serially connected with stop valve 2-2.Like this, be convenient to the startup of blower fan, also may be used for the adjustment of fan delivery and blast simultaneously.

Between 3rd end of described tee pipe coupling 1-7 and the other end of described tee pipe coupling 1-7, shape in angle of 45 degrees.Like this, can ensure to be greater than material angle of repose.

Present embodiment owing to have employed the circular in cross-section of described urceolus, described inner core circular in cross-section, the technological means that the distance between described outer tube inner wall with described inner tank theca is equal everywhere, so, the structure of getting wind heat-obtaining device is comparatively simple, and production and processing is easier to, and production cost is lower.When the cross section adopting described urceolus is the not isometrical circle of disloyalty, described inner core cross section is the isometrical circle of disloyalty, from the circumference of advancing along air intake near tangent air inlet to away from tangent air inlet place, during the technological means that the distance between described outer tube inner wall and described inner tank theca reduces gradually, be conducive to improving the swirl velocity of air in annular space, and then, be conducive to improving the heat smoke swirl velocity taken out, finally, be conducive to big particle in heat smoke to be separated from heat smoke.When the cross section adopting described urceolus is the not isometrical circle of three-core, described inner core cross section is the isometrical circle of disloyalty, from near tangent air inlet along the circumference of air intake to away from tangent air inlet place, during the technological means that the distance between described outer tube inner wall and described inner tank theca reduces gradually, the swirl velocity of air in annular space can be improved further, and then, the heat smoke swirl velocity of taking-up can be improved further, finally, further big particles more in heat smoke are separated from heat smoke.

Also further improve as present embodiment, as shown in Figure 1, the heat smoke outlet of described second level dust arrester and the heat smoke inlet communication of third level cooling device, the heat smoke outlet of described third level cooling device and the heat smoke inlet communication of third level dust arrester, the soot door of described third level dust arrester and the cigarette ash inlet communication of kiln ash silo 10, the heat smoke outlet of described second level dust arrester is provided with second level cooling device with the heat smoke import of third level cooling device.

Preferred as one, the heat smoke outlet of described third level dust arrester is communicated with by the air inlet of exhaust blower 8 with grate-cooler 9.Be conducive to like this protecting working environment.

Cold wind butterfly valve 9-1 is provided with between described exhaust blower 8 and grate-cooler 9.Like this, bypass flue gas can be regulated to enter the gas temperature of grate-cooler.

Stop valve 8-1 is serially connected with between described third level dust arrester and described exhaust blower 8.Like this, exhaust blower can be made to be isolated from outside system, and can regulating system airflow pressure.

Cold wind butterfly valve 6-2 is provided with between described third level cooling device and described third level dust arrester.Like this, flexible modulation the flue-gas temperature of dust arrester can be entered.

Stop valve 7-1 is serially connected with between described cold wind butterfly valve 6-2 and described third level dust arrester.Like this, flexible modulation the flue gas air quantity blast of third level dust arrester can be entered.

Stop valve 6-1 is serially connected with between described second level cooling device and described third level cooling device.Like this, flexible modulation the flue gas air quantity blast of third level dust arrester can be entered.

Stop valve 4-1 is serially connected with between described second level dust arrester and described drying system 4.Like this, oven dry crushing system can be isolated from and get outside wind heat-obtaining system, and the airflow pressure entering and dry crushing system can be adjusted.

Described getting between wind heat-obtaining device 1 and described second level dust arrester is serially connected with stop valve 3-1.Like this, second level dust arrester can be isolated from and get outside wind heat-obtaining system, and the flue gas air quantity blast entering second level dust arrester can be adjusted.

Described second level dust arrester is cyclone separator 3, and described second level cooling device is cold wind butterfly valve 5, and described third level cooling device is multitube cooler 6, and described third level dust arrester is three grades of bag filters 7.Like this, through multistage cooling, reasonably to mix cold blast rate, the flue-gas temperature of suitable discharge system can be obtained.

The top of described pyrolysis oven 0-1 is provided with multistage preheater 0-6, multistage described preheater 0-6 is connected in series, preheater 0-6 is topmost chopped-off head preheater, preheater 0-6 is bottom final stage preheater, and the soot door of described cyclone separator 3 is communicated with the discharge duct in described final stage preheater by two flap valve 3-2.Like this, kiln system can be returned dispose getting cinder that wind heat-obtaining takes out of.

The soot door of described multitube cooler 6 and the cigarette ash inlet communication of described kiln ash silo 10.Like this, outside kiln ash discharge system multitube cooler can collected.

The soot door of described multitube cooler 6 is communicated with by conveying worm 6-4 with the cigarette ash import of described kiln ash silo 10.Like this, kiln ash multitube cooler can collected is with outside mechanical mode of movement discharge system.

Two flap valve 6-3 is serially connected with between the soot door of described multitube cooler 6 and the cigarette ash import of described conveying worm 6-4.Like this, can be implemented in the lock wind in discharge process and ensure that discharging is smooth and easy.

Be serially connected with between the soot door of described conveying worm 6-4 and the cigarette ash import of described kiln ash silo 10 and turn round discharger 10-7.Like this, can be implemented in the lock wind in discharge process and ensure that discharging is smooth and easy.

Described three grades of bag filters 7 have three bag filters, and each bag filter has soot door, the soot door of bag filter described in each and the cigarette ash inlet communication of described kiln ash silo 10.Like this, outside kiln ash discharge system bag collector can collected.

The soot door of bag filter described in each passes through the cigarette ash inlet communication of conveying worm 7-3 and described kiln ash silo 10.Like this, kiln ash bag collector can collected is with outside mechanical mode of movement discharge system.

All be serially connected with between the soot door of bag filter described in each and the cigarette ash import of described conveying worm 7-3 and turn round discharger 7-2.Like this, can be implemented in the lock wind in discharge process and ensure that discharging is smooth and easy.

Be serially connected with between the soot door of described conveying worm 7-3 and the cigarette ash import of described kiln ash silo 10 and turn round discharger 10-11.Like this, can be implemented in the lock wind in discharge process and ensure that discharging is smooth and easy.

The top of described kiln ash silo 10 is cylinder, the bottom of described kiln ash silo 10 is lower cone, the inwall of described kiln ash silo 10 is inlay anti-wall built-up liner, and the next top of described lower cone is provided with soot door, the soot door of described kiln ash silo 10 with pass through materials device 10-5 and be communicated with.Like this, can by outside the kiln ash discharge system in kiln ash silo.

The soot door of described kiln ash silo 10 is communicated with the described materials device 10-5 that passes through by discharger 10-4 in bulk.Like this, can by outside the kiln ash discharge system in kiln ash silo.

The circumference of described lower cone is distributed with nozzle 10-1, and described nozzle 10-1 is communicated with roots blower 10-2.Like this, fluidization can be carried out at bin bottom to kiln ash, be convenient to kiln ash and draw off.

The described materials device 10-5 that passes through is provided with decompression ash overflow port, the described decompression ash overflow port passing through materials device 10-5 is communicated with the gas approach of single-stage bag filter 10-9, the soot door of described single-stage bag filter 10-9 and the cigarette ash inlet communication of described kiln ash silo 10, the gas outlet of described single-stage bag filter 10-9 is communicated with exhaust blower 10-10.Like this, can ensure to keep tiny structure in kiln ash silo, and the dust that described bag collector is discharged is smooth and easy enters in kiln ash silo.

Described kiln ash silo 10 is provided with decompression ash overflow port, and the decompression ash overflow port of described kiln ash silo 10 is communicated with the gas approach of described single-stage bag filter 10-9.Like this, can ensure that kiln ash unloads outside kiln discharge ash silo through decompression ash overflow port.

Described setting height(from bottom) of passing through materials device 10-5 is greater than the height of fertilizer transport vehicle 10-6.Like this, be conducive to cigarette ash injection fertilizer transport vehicle.

Present embodiment is owing to have employed heat smoke outlet and the heat smoke inlet communication of third level cooling device of described second level dust arrester, the heat smoke outlet of described third level cooling device and the heat smoke inlet communication of third level dust arrester, the soot door of described third level dust arrester and the cigarette ash inlet communication of kiln ash silo, heat smoke outlet and the heat smoke import of third level cooling device of described second level dust arrester are provided with the technological means of second level cooling device, so, not only the alternative materials large to water content can carry out effective drying and processing, and, high-quality potash fertilizer can also be produced.The carbide slag that this invention is applicable to utilize rotary kiln to dispose high-moisture and high chlorinity prepares the production line of cement.Also be applicable to a large amount of cement rotary kiln production line using alternative crude fuel simultaneously.

Claims (10)

1. get a method for wind heat-obtaining from rotary kiln, heat smoke is taken out from rotary kiln (0), it is characterized in that: described heat smoke takes out from the smoke-box (0-2) of described rotary kiln (0) kiln tail.

2. the method for wind heat-obtaining is got according to claim 1 from rotary kiln, it is characterized in that: the heat smoke taken out from described rotary kiln (0) kiln tail smoke-box (0-2) is sent to drying system (4), and/or the heat smoke that will take out from described rotary kiln (0) kiln tail smoke-box (0-2) is for the preparation of potash fertilizer or for the raw material of industry.

3. the method for wind heat-obtaining is got according to claim 2 from rotary kiln, it is characterized in that: the heat smoke taken out from described rotary kiln (0) kiln tail smoke-box (0-2) is being sent to drying system (4), and/or, the heat smoke taken out from described rotary kiln (0) kiln tail smoke-box (0-2) is first carried out dust removal process and/or cooling processing for the preparation of before potash fertilizer.

4. the method for wind heat-obtaining is got according to claim 3 from rotary kiln, it is characterized in that: described dust removal process comprises 3-stage dust-removal process, described cooling processing comprises three grades of cooling processing, first order dust removal process and first order cooling processing are first carried out to the heat smoke taken out from described rotary kiln (0) kiln tail smoke-box (0-2), carry out second level dust removal process again, then drying system (4) is sent to, the kiln ash collected after first order dust removal process is turned back in rotary kiln (0), the kiln ash collected after the dust removal process of the second level is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven (0-1) top, or, first order dust removal process and first order cooling processing are first carried out to the heat smoke taken out from described rotary kiln (0) kiln tail smoke-box (0-2), carry out second level dust removal process and second level cooling processing again, then, carry out third level cooling processing and third level dust removal process, the kiln ash collected after first order dust removal process is turned back in rotary kiln (0), the kiln ash collected after the dust removal process of the second level is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven (0-1) top, by grey for the preparation of potash fertilizer for the kiln collected after third level dust removal process, the heat smoke obtained after third level dust removal process is sent to the grate-cooler (9) of rotary kiln (0) kiln hood, or, first order dust removal process and first order cooling processing are first carried out to the heat smoke taken out from described rotary kiln (0) kiln tail smoke-box (0-2), carry out second level dust removal process again, the kiln ash collected after first order dust removal process is turned back in rotary kiln (0), the kiln ash collected after the dust removal process of the second level is sent in the final stage preheater discharge duct at kiln tail pyrolysis oven (0-1) top, then, a part in the heat smoke obtained after the dust removal process of the second level is sent to drying system (4), simultaneously, another part in the heat smoke obtained after the dust removal process of the second level is carried out second level cooling processing, carry out third level cooling processing and third level dust removal process again, by grey for the preparation of potash fertilizer for the kiln collected after third level dust removal process, the heat smoke obtained after third level dust removal process is sent to the grate-cooler (9) of rotary kiln (0) kiln hood.

5. the rotary system of a desirable wind heat-obtaining, comprise rotary kiln (0), the kiln tail of described rotary kiln (0) is communicated with pyrolysis oven (0-1) by smoke-box (0-2), it is characterized in that: the lateral wall of described rotary kiln (0) kiln tail smoke-box (0-2) is provided with heat smoke outlet (0-5).

6. the rotary system of desirable wind heat-obtaining according to claim 5, it is characterized in that: heat smoke outlet (0-5) and the heat smoke inlet communication getting wind heat-obtaining device (1) of described smoke-box (0-2), described wind heat-obtaining device (1) of getting has first order dust arrester and first order cooling device, the described heat smoke getting wind heat-obtaining device (1) exports the heat smoke inlet communication with second level dust arrester, the heat smoke outlet of described second level dust arrester and the heat smoke inlet communication of drying system (4).

7. the rotary system of desirable wind heat-obtaining according to claim 6, it is characterized in that: described in get wind heat-obtaining device (1) and comprise urceolus (1-1) and inner core (1-2), described urceolus (1-1) is enclosed within described inner core (1-2), looping space between the inwall of described urceolus (1-1) and the outer wall of described inner core (1-2), the gas outlet end of described inner core (1-2) and one end of described urceolus (1-1) are tightly connected, air outlet is formed between the air inlet end of described inner core (1-2) and the other end of described urceolus (1-1), the other end and the heat smoke of described smoke-box (0-2) of described urceolus (1-1) export (0-5) and seal and be communicated with, the sidewall of described urceolus (1-1) is provided with tangent air inlet (1-5).

8. the rotary system of desirable wind heat-obtaining according to claim 7, it is characterized in that: the shape of described tangent air inlet (1-5) is elongated, the length direction of described tangent air inlet (1-5) is identical with the length direction of described urceolus (1-1), the length of described tangent air inlet (1-5) is corresponding to the length of described urceolus (1-1), described strip tangent air inlet (1-5) is configured with reducing air inlet joint (1-6), the air outlet shape of described reducing air inlet joint (1-6) is elongated, the air inlet shape of described reducing air inlet joint (1-6) is rounded, or, described tangent air inlet (1-5) is offset to one end of described urceolus (1-1), helical duct (1-11) is provided with in described annular space, one end of described tangent air inlet (1-5) described helical duct (1-11) is communicated with, and the other end of described helical duct (1-11) exports (0-5) with the heat smoke of described smoke-box (0-2) and is communicated with.

9. the rotary system of desirable wind heat-obtaining according to claim 8, it is characterized in that: the circular in cross-section of described urceolus (1-1), described inner core (1-2) circular in cross-section, the distance between described urceolus (1-1) inwall with described inner core (1-2) outer wall is equal everywhere; Or, the cross section of described urceolus (1-1) is the not isometrical circle of disloyalty, described inner core (1-2) cross section is the isometrical circle of disloyalty, the circumference of advancing from close tangent air inlet (1-5) along air intake is extremely away from tangent air inlet (1-5) place, and the distance between described urceolus (1-1) inwall and described inner core (1-2) outer wall reduces gradually; Or, the cross section of described urceolus (1-1) is the not isometrical circle of three-core, described inner core (1-2) cross section is the isometrical circle of disloyalty, from close tangent air inlet (1-5) along the circumference of air intake extremely away from tangent air inlet (1-5) place, the distance between described urceolus (1-1) inwall and described inner core (1-2) outer wall reduces gradually.

10. the rotary system of desirable wind heat-obtaining according to claim 6, it is characterized in that: the heat smoke outlet of described second level dust arrester and the heat smoke inlet communication of third level cooling device, the heat smoke outlet of described third level cooling device and the heat smoke inlet communication of third level dust arrester, the soot door of described third level dust arrester and the cigarette ash inlet communication of kiln ash silo (10), the heat smoke outlet of described second level dust arrester is provided with second level cooling device with the heat smoke import of third level cooling device.