CA1189064A - Continuous delivery recirculation-type mixer and dissolver for liquids and solids - Google Patents
Continuous delivery recirculation-type mixer and dissolver for liquids and solidsInfo
- Publication number
- CA1189064A CA1189064A CA000354635A CA354635A CA1189064A CA 1189064 A CA1189064 A CA 1189064A CA 000354635 A CA000354635 A CA 000354635A CA 354635 A CA354635 A CA 354635A CA 1189064 A CA1189064 A CA 1189064A
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- mixing
- reactor
- solution
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Abstract
ABSTRACT OF THE DISCLOSURE
A novel method and apparatus are provided for mixing and dissolving solid and liquid substances. The method includes the steps of first keeping both the solid and liquid substances to be mixed continuously in a constant circulation inside an in-line mixing zone surrounded axially by the mixing/
reactor zone using an external source of mixing energy to maintain a mix-ture or solution. The next step involves continuously internally recircu-lating a portion of the mixture or solution along with an additional por-tion of the mixture or solution from an external source in a separate concentric circulating zone within the mixing/reactor zone. The next step in-volves continuously withdrawing a portion of the mixture or a portion of the solution from the concentric zone through an annular outlet connection zone leading to the mixing/reactor zone and thence through an annular inlet connection zone leading to the concentric zone. The next step involves continuously discharging a solution from the mixing/reactor zone through a separate annular discharge zone and through outlet zones to a level-controlling dis-charge zone. The final step includes continuously and controllably supply-ing an amount of both the solid and the liquid substances to the mixing/reactor zone, the supplied amount being equal to the discharged solution withdrawn through the discharge zone. The apparatus for performing the method com-prises a specially configured loop-type reactor having a special mixing and dissolving chamber with internal recirculating means and separate with-drawal means to external recycling means. By this method and apparatus, a solution is obtained in a continuous flow.
A novel method and apparatus are provided for mixing and dissolving solid and liquid substances. The method includes the steps of first keeping both the solid and liquid substances to be mixed continuously in a constant circulation inside an in-line mixing zone surrounded axially by the mixing/
reactor zone using an external source of mixing energy to maintain a mix-ture or solution. The next step involves continuously internally recircu-lating a portion of the mixture or solution along with an additional por-tion of the mixture or solution from an external source in a separate concentric circulating zone within the mixing/reactor zone. The next step in-volves continuously withdrawing a portion of the mixture or a portion of the solution from the concentric zone through an annular outlet connection zone leading to the mixing/reactor zone and thence through an annular inlet connection zone leading to the concentric zone. The next step involves continuously discharging a solution from the mixing/reactor zone through a separate annular discharge zone and through outlet zones to a level-controlling dis-charge zone. The final step includes continuously and controllably supply-ing an amount of both the solid and the liquid substances to the mixing/reactor zone, the supplied amount being equal to the discharged solution withdrawn through the discharge zone. The apparatus for performing the method com-prises a specially configured loop-type reactor having a special mixing and dissolving chamber with internal recirculating means and separate with-drawal means to external recycling means. By this method and apparatus, a solution is obtained in a continuous flow.
Description
6~
This invention relates to d method and apparatus for mixing solid and liquid substances.
Mixing solid and liquid substances is mostly accomplished in a stirring apparatus which usually comprises a tank wherein a stirrer rotates.
Solid substances and liquids are, for example, mixed when a sugar solution is prepared.
Ilowever, it is a disadvantage of such a simple stirring apparatus that the centrifugal forces tend to drive the solid particles to the wall of the tank where they settle in a compact mass. This makes the mixing pro-cedure slow and not sufficiently efficient. Moreover, aEter mixing the tank has to be emptied ~ind refilled completely.
The production oE such a solutiorl is thereEore discoll~inuous which entails a severe loss oE time.
It is thereEore all object oE a broacl aspect oE l:hiS illVellt iorl tcl provide a method and apparatus for mixing solicl substances with liquids in such a way that the ready mixture is obtained in a continuous flow.
By one broad aspect oE this invention, a method is provided Eor mixing and dissolving solid and liquid substances in a mixing/reactor zone having an inlet zone at one end thereof and an outlet zone at the opposite end thereof, the method comprising the steps of: keeping both the solicl and liquid substances to be mixed continuously in a constant circulation in-side an in-line mixing zone within the mixing/reactor zone, using an exter-nal source of mixing energy to 6~
maintain a mixture or solution; continuously internally recirculating a portion of the mixture or solution along with an addition portion of the mixture or solution from an external source in a separate concentric circulating zone within the mixing/reactor zone; continuously withdrawing a por-tlon of the recirculating mixture or a portion of the solution from the concen~ric zone through an annular outlet connection zone leading to the mixing/reac-tor zone and thence through an annular inlet connection zone leading to the concentric zone; continuously discharging a solution from the mixing/
reactor zone through a separate annular discharge zone and through outlet zones to a level-controlling discharge zone; and (e) continuously and con-trollably supplying an amount of both the solid ancl the lLquLcl suL~tances to the mixing/reactor æone, tha supplied amount baing ec~ l to the dischargad solution withdrawn throucJh the discharga zono.
By another aspect of this invention, a loop reactor is provided comprising a substantially horizontal cylindrical vessel; a conduit arranged in the vessel concentrically therewith and provided with means defining an annular space which communicates with a mixing space between the conduit and vessel and with at least one outlet opening at one end of the , conduit; an outlet duct connected to each outlet opening; liquid inlet means arranged at the other end of the conduit concentrically therewith; filling means arranged at an upper portion of the vessel; and a pump for circulat~
ing liquid through the reactor, the pump being connected externally of the vessel at one side to the outlet duct and at the other side to discharge means to a return duct connected to the inlet means to provide a recircu-latory flow from the conduit, through apertures to an outlet annular zone at the end of the vessel to the mixing space and thence to an inlet annular zone back to the conduit, and a discharge flow from the mixing space to the annular-space-defining means and thence to outlet tubes connected to .1 ",;~
the discharge means.
By a variant -thereof, the loop reactor includes level regulating means associated with the filling means and operatively connected to the discharge means to co-ordinate the rates of filling and discharge.
By anothe.r aspect of this invention, a loop reactcr is provided for mixing and dissolving solid and liquid substances, .the reactor compris-ing: a tube-shaped reactor housing supported horizontally on a foundation;
inlet means at one end and outlet means at the opposite end of the reactor housing; a guide tube in the reactor housing providing the sole connection to the inlet means and also defining an outer annular mixing chamber between the guide tube and the inner wall o:E the reac-tor housing; a tube portion surrounding a por-tion of the guide -tube and being connected to the guide tube at the end adjacent the out:Let means, the ~ube porti.on ancl the gu:ide tube defining an inner ann~Llar chalrlber between them, the :Lnner annul.a:r space being connected to the mix:ing chamber.by :inlet open:ings t.hro~lgll wh:i.c}l tlle solid and liquid substances enter into the inner annular chamber and bei.ng the sole connection to the outlet meansi a filling socket connected to the upper side of the r.eactor housing for filling both the solid and the liquid substances into the reactor housing; at least one level con-trol indicator in the filling socket for opening and closing -the socket and thereby regulating the level oE the solid and liquid subs-tances i.n -the reactor; a PiPe connec-tion between -the inner annular chamber and the reac-tor housing outlet means; a circulating pump in the pipe connection :Eor pumping the mix-ture of the solid and liquid from the outlet means to the inlet means and for providing internal recirculation from the discharge zone of -the guide tube to flow around the pipe connection and through apertures directly connecting the discharge zone of the guide tube to the outer annular mixing char~ber recirculation at the end of the tube-shaped reactor being enabled ~t - ~a -., .
i6~
by annular spaces between the tube por-tion and the internal surface of the tube-sha ed vessel; and a level controlling discharge valve connected to the pipe connection for discharging the final solution.
By a variant thereof, the reactor fur-ther includes means connecting the discharge valve and the ~evel control indicator so that upon opening of the discharge valve for discharging the ~inal solution, the level control indicator is simultaneously operated to feed a corresponding quantity of substances into the reactor.
One type of reactor which, aEter slight modifications, is basically suited for performing the invented method is, for example, .. . ~ .
~ , . .
- 2b -'~
6gL
described in the U.S. Patent No. 4,037,~25 issued July 26, 1977 to Herwig Burgert.
Such a reactor which would be slightly modified to provide an appara-tus of an aspect of this invention comprises a tube-shaped reac-tor housing supported horizontally on a foundation. The housing has inlet means in -the form of an injec-tion nozzle at one end and outlet means at the opposite end. A guide tube in the reactor housing defines a mixing and dissolving chamber between the guide tube and the inner wall of the reactor housing. A further short tube surrounds the guide tube and is connected to the guide tube at one end adjacent to the reac-tor outlet means. A filling socket is connected to the upper side of the reac-tor housing for filling the substances into the reactor. A pipe line inter-connects the reactor housing outlet means and inlet means. A circulating pump is part oE the pipe connac-tion for pumping the mixture ~rom the out-let: means back to the inlet means. A dischar~Je va:Lve is p~rt o~ t:he p;pe connection Eor withdraw:inc~ part of the ready mixture from the reLIctor, ar a control valve is part of the filling socket. The discharge valve and the control valve are so interconnected -that the same quantity of sub-stances is always fed to the reactor tha-t is withdrawn by way of the dis-charge valve.
In the accompanying drawing, -the single figure shows schematical-ly a loop-type reactor according -to one aspect of -this inven-tion for per-forming the method of another aspect oE-this invention.
Referring now to the drawing, the reactor comprises a cylindri-cal reactor housing 1, within which a guide tube 2 is concentrically arranged. Through part of its length, the guide tube 2 is provided with a double wall having an inner wall 4 and an outer wall 3. Both walls de-6~
fine between them an annular hollow space with an inlet 6 at one end of theouter wall 3. The other end of the outer wall 3 is conneeted to the inner wall 4. mrough this connection tubes 7 extend to the reactor ou-tlet 10.
On ~he upper side of the reactor housing 1 a filling soeket 8 is provided. A pipe 9 ends in this filling socket. Through the filling socket the solid substances to be mixed and dissolved are introduced into the reactor while the liquid substances enter through the pipe 9. A control valve 17 is part of the socke-t 8. By means oE this control valve 17, the quantity of substances filled in-to the reactor is regulated.
On the left-hand side of the drawing there is an inlet opening in the reactor housing 1, including an injec-tion nozzle 1~. Pipe connee-tions 12, 13 interconneet -the outlet 10 of the reactor with the inlet. In pipe connections 12, 13 a pump 11 is arrancjed which ca~lses the solut:ion to eireulate eonstantly through the reaetor and pipes 12, L3.
A diseharge valve 16 is eonneeted with pipe :L5 to thc pi~?e L3 Eor emptying the ready so]ution into appropriate tanks, bottles or pipes (not shown).
A suitable connection 19 (shown in broken lines) exists be-tween the discharge valve 16 and the con-trol valve 17.
When -the reactor is filled and in operation the circulating pump drives the substances through the reaetor and from there through the pipe connections 12, 13, back into the reactor by way of -the nozzLe 1~. This causes the substances to be thoroughly mixed and dissolved.
Upon opening c>f the discharge valve 16, the Final sol-ltion flows into the discharge pipe 15. The control valve is so regulated through connection 19 that, at the same time, new substances are admitted -to the reac-tor to an extent that they will replace the discharged quantity of the '~
6~
final solution.
A faucet 18 is provided at the lower side of the reactor housing for completely emptying the reac-tor, if desired.
In o,her words, in operation pump 11 becomes operational the moment all of the reactor housing 1 is filled and pump 11 then injects the mixture or solution -through the nozzle 14 into the guide tube 2. This initiates the circuiation of the mixture or solution because the mixture or solution, as shown by the arrows, is forced at the right of the tube 2 between the walls 1 and 3. Pipes 7 pass through the cover and the mixture or solution can move through besides the pipes 7. Thereupon the mixture or solution between l and 2 at the le~t end is a~ain i-orced into tube 2. At tl-e same tLme, th~` rnixtur~ or sr-lution nlso (ullc'ls al 6 nrld is sucked :in through 7 and 10 by tho motor and ~lgain is mcldo to cixclllat:c through the nozz:Le 1~ as long as valve 16 is closed. ~Ic~n~ aEtor !;C)lllC!
time of circulation the mixture is a -true solution in which the solids are completely dissolved in the liquid solvent, the discharge valve 16 is opened to drain off the final solution. Depending on how much valve 16 i5 opened, the solution can be simultaneously pumped through the pipe 13.
This invention relates to d method and apparatus for mixing solid and liquid substances.
Mixing solid and liquid substances is mostly accomplished in a stirring apparatus which usually comprises a tank wherein a stirrer rotates.
Solid substances and liquids are, for example, mixed when a sugar solution is prepared.
Ilowever, it is a disadvantage of such a simple stirring apparatus that the centrifugal forces tend to drive the solid particles to the wall of the tank where they settle in a compact mass. This makes the mixing pro-cedure slow and not sufficiently efficient. Moreover, aEter mixing the tank has to be emptied ~ind refilled completely.
The production oE such a solutiorl is thereEore discoll~inuous which entails a severe loss oE time.
It is thereEore all object oE a broacl aspect oE l:hiS illVellt iorl tcl provide a method and apparatus for mixing solicl substances with liquids in such a way that the ready mixture is obtained in a continuous flow.
By one broad aspect oE this invention, a method is provided Eor mixing and dissolving solid and liquid substances in a mixing/reactor zone having an inlet zone at one end thereof and an outlet zone at the opposite end thereof, the method comprising the steps of: keeping both the solicl and liquid substances to be mixed continuously in a constant circulation in-side an in-line mixing zone within the mixing/reactor zone, using an exter-nal source of mixing energy to 6~
maintain a mixture or solution; continuously internally recirculating a portion of the mixture or solution along with an addition portion of the mixture or solution from an external source in a separate concentric circulating zone within the mixing/reactor zone; continuously withdrawing a por-tlon of the recirculating mixture or a portion of the solution from the concen~ric zone through an annular outlet connection zone leading to the mixing/reac-tor zone and thence through an annular inlet connection zone leading to the concentric zone; continuously discharging a solution from the mixing/
reactor zone through a separate annular discharge zone and through outlet zones to a level-controlling discharge zone; and (e) continuously and con-trollably supplying an amount of both the solid ancl the lLquLcl suL~tances to the mixing/reactor æone, tha supplied amount baing ec~ l to the dischargad solution withdrawn throucJh the discharga zono.
By another aspect of this invention, a loop reactor is provided comprising a substantially horizontal cylindrical vessel; a conduit arranged in the vessel concentrically therewith and provided with means defining an annular space which communicates with a mixing space between the conduit and vessel and with at least one outlet opening at one end of the , conduit; an outlet duct connected to each outlet opening; liquid inlet means arranged at the other end of the conduit concentrically therewith; filling means arranged at an upper portion of the vessel; and a pump for circulat~
ing liquid through the reactor, the pump being connected externally of the vessel at one side to the outlet duct and at the other side to discharge means to a return duct connected to the inlet means to provide a recircu-latory flow from the conduit, through apertures to an outlet annular zone at the end of the vessel to the mixing space and thence to an inlet annular zone back to the conduit, and a discharge flow from the mixing space to the annular-space-defining means and thence to outlet tubes connected to .1 ",;~
the discharge means.
By a variant -thereof, the loop reactor includes level regulating means associated with the filling means and operatively connected to the discharge means to co-ordinate the rates of filling and discharge.
By anothe.r aspect of this invention, a loop reactcr is provided for mixing and dissolving solid and liquid substances, .the reactor compris-ing: a tube-shaped reactor housing supported horizontally on a foundation;
inlet means at one end and outlet means at the opposite end of the reactor housing; a guide tube in the reactor housing providing the sole connection to the inlet means and also defining an outer annular mixing chamber between the guide tube and the inner wall o:E the reac-tor housing; a tube portion surrounding a por-tion of the guide -tube and being connected to the guide tube at the end adjacent the out:Let means, the ~ube porti.on ancl the gu:ide tube defining an inner ann~Llar chalrlber between them, the :Lnner annul.a:r space being connected to the mix:ing chamber.by :inlet open:ings t.hro~lgll wh:i.c}l tlle solid and liquid substances enter into the inner annular chamber and bei.ng the sole connection to the outlet meansi a filling socket connected to the upper side of the r.eactor housing for filling both the solid and the liquid substances into the reactor housing; at least one level con-trol indicator in the filling socket for opening and closing -the socket and thereby regulating the level oE the solid and liquid subs-tances i.n -the reactor; a PiPe connec-tion between -the inner annular chamber and the reac-tor housing outlet means; a circulating pump in the pipe connection :Eor pumping the mix-ture of the solid and liquid from the outlet means to the inlet means and for providing internal recirculation from the discharge zone of -the guide tube to flow around the pipe connection and through apertures directly connecting the discharge zone of the guide tube to the outer annular mixing char~ber recirculation at the end of the tube-shaped reactor being enabled ~t - ~a -., .
i6~
by annular spaces between the tube por-tion and the internal surface of the tube-sha ed vessel; and a level controlling discharge valve connected to the pipe connection for discharging the final solution.
By a variant thereof, the reactor fur-ther includes means connecting the discharge valve and the ~evel control indicator so that upon opening of the discharge valve for discharging the ~inal solution, the level control indicator is simultaneously operated to feed a corresponding quantity of substances into the reactor.
One type of reactor which, aEter slight modifications, is basically suited for performing the invented method is, for example, .. . ~ .
~ , . .
- 2b -'~
6gL
described in the U.S. Patent No. 4,037,~25 issued July 26, 1977 to Herwig Burgert.
Such a reactor which would be slightly modified to provide an appara-tus of an aspect of this invention comprises a tube-shaped reac-tor housing supported horizontally on a foundation. The housing has inlet means in -the form of an injec-tion nozzle at one end and outlet means at the opposite end. A guide tube in the reactor housing defines a mixing and dissolving chamber between the guide tube and the inner wall of the reactor housing. A further short tube surrounds the guide tube and is connected to the guide tube at one end adjacent to the reac-tor outlet means. A filling socket is connected to the upper side of the reac-tor housing for filling the substances into the reactor. A pipe line inter-connects the reactor housing outlet means and inlet means. A circulating pump is part oE the pipe connac-tion for pumping the mixture ~rom the out-let: means back to the inlet means. A dischar~Je va:Lve is p~rt o~ t:he p;pe connection Eor withdraw:inc~ part of the ready mixture from the reLIctor, ar a control valve is part of the filling socket. The discharge valve and the control valve are so interconnected -that the same quantity of sub-stances is always fed to the reactor tha-t is withdrawn by way of the dis-charge valve.
In the accompanying drawing, -the single figure shows schematical-ly a loop-type reactor according -to one aspect of -this inven-tion for per-forming the method of another aspect oE-this invention.
Referring now to the drawing, the reactor comprises a cylindri-cal reactor housing 1, within which a guide tube 2 is concentrically arranged. Through part of its length, the guide tube 2 is provided with a double wall having an inner wall 4 and an outer wall 3. Both walls de-6~
fine between them an annular hollow space with an inlet 6 at one end of theouter wall 3. The other end of the outer wall 3 is conneeted to the inner wall 4. mrough this connection tubes 7 extend to the reactor ou-tlet 10.
On ~he upper side of the reactor housing 1 a filling soeket 8 is provided. A pipe 9 ends in this filling socket. Through the filling socket the solid substances to be mixed and dissolved are introduced into the reactor while the liquid substances enter through the pipe 9. A control valve 17 is part of the socke-t 8. By means oE this control valve 17, the quantity of substances filled in-to the reactor is regulated.
On the left-hand side of the drawing there is an inlet opening in the reactor housing 1, including an injec-tion nozzle 1~. Pipe connee-tions 12, 13 interconneet -the outlet 10 of the reactor with the inlet. In pipe connections 12, 13 a pump 11 is arrancjed which ca~lses the solut:ion to eireulate eonstantly through the reaetor and pipes 12, L3.
A diseharge valve 16 is eonneeted with pipe :L5 to thc pi~?e L3 Eor emptying the ready so]ution into appropriate tanks, bottles or pipes (not shown).
A suitable connection 19 (shown in broken lines) exists be-tween the discharge valve 16 and the con-trol valve 17.
When -the reactor is filled and in operation the circulating pump drives the substances through the reaetor and from there through the pipe connections 12, 13, back into the reactor by way of -the nozzLe 1~. This causes the substances to be thoroughly mixed and dissolved.
Upon opening c>f the discharge valve 16, the Final sol-ltion flows into the discharge pipe 15. The control valve is so regulated through connection 19 that, at the same time, new substances are admitted -to the reac-tor to an extent that they will replace the discharged quantity of the '~
6~
final solution.
A faucet 18 is provided at the lower side of the reactor housing for completely emptying the reac-tor, if desired.
In o,her words, in operation pump 11 becomes operational the moment all of the reactor housing 1 is filled and pump 11 then injects the mixture or solution -through the nozzle 14 into the guide tube 2. This initiates the circuiation of the mixture or solution because the mixture or solution, as shown by the arrows, is forced at the right of the tube 2 between the walls 1 and 3. Pipes 7 pass through the cover and the mixture or solution can move through besides the pipes 7. Thereupon the mixture or solution between l and 2 at the le~t end is a~ain i-orced into tube 2. At tl-e same tLme, th~` rnixtur~ or sr-lution nlso (ullc'ls al 6 nrld is sucked :in through 7 and 10 by tho motor and ~lgain is mcldo to cixclllat:c through the nozz:Le 1~ as long as valve 16 is closed. ~Ic~n~ aEtor !;C)lllC!
time of circulation the mixture is a -true solution in which the solids are completely dissolved in the liquid solvent, the discharge valve 16 is opened to drain off the final solution. Depending on how much valve 16 i5 opened, the solution can be simultaneously pumped through the pipe 13.
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A loop reactor comprising: a substantially horizontal cylindrical vessel; a conduit arranged in the vessel concentrically there-with and provided with means defining an annular space which communicates with a mixing space between said conduit and said vessel and with at least one outlet opening at one end of the conduit; an outlet duct connected to each outlet opening; liquid inlet means arranged at the other end of the conduit concentrically therewith; filling means arranged at an upper portion of the vessel; and a pump for circulating liquid through the reactor, the pump being connected externally of the vessel at one side to the outlet duet and at the other side to discharge means and to a return duct connec-ted to the inlet means to provide a recirculatory flow from said conduit, through apertures to an outlet annular zone at the end of said vessel to said mixing space and thence to an inlet annular zone back to said conduit, and a discharge flow from said mixing space to said annular-space-defining means and thence to outlet tubes connected to said discharge means.
2. A loop realtor as claimed in claim 1, including level regulating means associated with said filling means and operatively connec-ted to said discharge means to co-ordinate the rates of filling and dis-charge.
3. A loop reactor for mixing solid and liquid substances, the reactor comprising:
(a) a tube-shaped reactor housing supported horizontally on a foundation;
(b) inlet means at one end and outlet means at the opposite end of said reactor housing;
(c) a guide tube in said reactor housing providing the sole con-nection to said inlet means and also defining an outer annular mixing chamber between said guide tube and the inner wall of said reactor housing;
(d) a tube portion surrounding a portion of said guide tube and being connected to said guide tube at the end adjacent said outlet means, said tube portion and said guide tube defining an inner annular chamber between them, said inner annular space being connected to said mixing chamber by inlet openings through which said solid and liquid substances enter into said inner annular chamber and being the sole connection to said outlet means;
(e) a filling socket connected to the upper side of said reactor housing for filling both said solid and said liquid substances into the reactor housing;
(f) at least one level control indicator in said filling socket for opening and closing said socket and thereby regulating the level of the solid and liquid substances in said reactor;
(g) a pipe connection between said inner annular chamber and the reactor housing outlet means;
(h) a circulating pump in said pipe connection for pumping the mixture of said solid and liquid from said outlet means to said inlet means and for providing internal recirculation from the discharge zone of said guide tube to flow around said pipe connection and through apertures directly connecting the discharge zone of said guide tube to said outer annular mixing chamber recirculation at the end of said tube-shaped reactor being enabled by annular spaces between said tube portion and the internal surface of said tube-shaped vessel;
and (i) a level-controlling dischage valve connected to said pipe connection for discharging the final solution.
(a) a tube-shaped reactor housing supported horizontally on a foundation;
(b) inlet means at one end and outlet means at the opposite end of said reactor housing;
(c) a guide tube in said reactor housing providing the sole con-nection to said inlet means and also defining an outer annular mixing chamber between said guide tube and the inner wall of said reactor housing;
(d) a tube portion surrounding a portion of said guide tube and being connected to said guide tube at the end adjacent said outlet means, said tube portion and said guide tube defining an inner annular chamber between them, said inner annular space being connected to said mixing chamber by inlet openings through which said solid and liquid substances enter into said inner annular chamber and being the sole connection to said outlet means;
(e) a filling socket connected to the upper side of said reactor housing for filling both said solid and said liquid substances into the reactor housing;
(f) at least one level control indicator in said filling socket for opening and closing said socket and thereby regulating the level of the solid and liquid substances in said reactor;
(g) a pipe connection between said inner annular chamber and the reactor housing outlet means;
(h) a circulating pump in said pipe connection for pumping the mixture of said solid and liquid from said outlet means to said inlet means and for providing internal recirculation from the discharge zone of said guide tube to flow around said pipe connection and through apertures directly connecting the discharge zone of said guide tube to said outer annular mixing chamber recirculation at the end of said tube-shaped reactor being enabled by annular spaces between said tube portion and the internal surface of said tube-shaped vessel;
and (i) a level-controlling dischage valve connected to said pipe connection for discharging the final solution.
4. A loop reactor as claimed in claim 3, and further comprising:
means interconnecting said discharge valve and said level control indicator so that upon opening of said discharge valve fox discharging said final solution, said level control indicator is simultaneously operated to feed a corresponding quantity of substances into said reactor.
means interconnecting said discharge valve and said level control indicator so that upon opening of said discharge valve fox discharging said final solution, said level control indicator is simultaneously operated to feed a corresponding quantity of substances into said reactor.
5. A method of mixing and dissolving solid and liquid substances in a mixing/reactor zone having an inlet zone at one end thereof and an outlet zone at the opposite end thereof, said method comprising the steps of:
(a) keeping both the solid and liquid substances to be mixed continuously in a constant circulation inside an in-line mixing zone surrounded axially by said mixing/reactor zone, using an ex-ternal source of mixing energy to maintain a mixture or solution;
(b) continuously internally recirculating a portion of said mix-ture or solution along with an additional portion of said mixture or solution from an external source in a separate concentric circulating zone within said mixing/reactor zone;
(c) continuously withdrawing a portion of said recirculating mixture or a portion of said solution from said concentric zone through an annular outlet connection zone leading to said mixing/
reactor zone and thence through an annular inlet connection zone leading to said concentric zone;
(d) continuously discharging a solution from said mixing/reactor zone through a separate annular discharge zone and through outlet zones to a level-controlling discharge zone; and (e) continuously and controllably supplying an amount of both said solid and said liquid substances to said mixing/reactor zone, said supplied amount being equal to said discharged solution with-drawn through said discharge zone.
(a) keeping both the solid and liquid substances to be mixed continuously in a constant circulation inside an in-line mixing zone surrounded axially by said mixing/reactor zone, using an ex-ternal source of mixing energy to maintain a mixture or solution;
(b) continuously internally recirculating a portion of said mix-ture or solution along with an additional portion of said mixture or solution from an external source in a separate concentric circulating zone within said mixing/reactor zone;
(c) continuously withdrawing a portion of said recirculating mixture or a portion of said solution from said concentric zone through an annular outlet connection zone leading to said mixing/
reactor zone and thence through an annular inlet connection zone leading to said concentric zone;
(d) continuously discharging a solution from said mixing/reactor zone through a separate annular discharge zone and through outlet zones to a level-controlling discharge zone; and (e) continuously and controllably supplying an amount of both said solid and said liquid substances to said mixing/reactor zone, said supplied amount being equal to said discharged solution with-drawn through said discharge zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000354635A CA1189064A (en) | 1980-06-23 | 1980-06-23 | Continuous delivery recirculation-type mixer and dissolver for liquids and solids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000354635A CA1189064A (en) | 1980-06-23 | 1980-06-23 | Continuous delivery recirculation-type mixer and dissolver for liquids and solids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1189064A true CA1189064A (en) | 1985-06-18 |
Family
ID=4117245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000354635A Expired CA1189064A (en) | 1980-06-23 | 1980-06-23 | Continuous delivery recirculation-type mixer and dissolver for liquids and solids |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1189064A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009014A (en) * | 2010-10-08 | 2011-04-13 | 天津水工业工程设备有限公司 | Device for adding medicament and method of adding medicament |
| CN103599862A (en) * | 2013-11-28 | 2014-02-26 | 天津臻熙科技发展有限公司 | Equipment for adding agents through carrier and method for adding agents |
-
1980
- 1980-06-23 CA CA000354635A patent/CA1189064A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009014A (en) * | 2010-10-08 | 2011-04-13 | 天津水工业工程设备有限公司 | Device for adding medicament and method of adding medicament |
| CN103599862A (en) * | 2013-11-28 | 2014-02-26 | 天津臻熙科技发展有限公司 | Equipment for adding agents through carrier and method for adding agents |
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