US942207A - Process of treating the spent liquor of paper-mills. - Google Patents
Process of treating the spent liquor of paper-mills. Download PDFInfo
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- US942207A US942207A US48873309A US1909488733A US942207A US 942207 A US942207 A US 942207A US 48873309 A US48873309 A US 48873309A US 1909488733 A US1909488733 A US 1909488733A US 942207 A US942207 A US 942207A
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- Prior art keywords
- compartment
- paper
- mills
- spent liquor
- liquor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title description 15
- 239000007788 liquid Substances 0.000 description 12
- 239000003518 caustics Substances 0.000 description 11
- 239000012260 resinous material Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000003513 alkali Substances 0.000 description 5
- 241001527902 Aratus Species 0.000 description 3
- SURLGNKAQXKNSP-DBLYXWCISA-N chlorin Chemical compound C\1=C/2\N/C(=C\C3=N/C(=C\C=4NC(/C=C\5/C=CC/1=N/5)=CC=4)/C=C3)/CC\2 SURLGNKAQXKNSP-DBLYXWCISA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 230000008774 maternal effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000012261 resinous substance Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
Definitions
- I IsmoR Krrsnn of the city and county of Ihiladelphia, State of Pennsylvania, have invented a certain new and useful Im rovement in the Process of Treatin the pent Liquor of Paper or Pulp ills, of which the following is a specific'atio My invention relates to an improvement in the process of treating the spent li uor of paper or pulp mills, so as to be ena led to extract from said spent liquor the caustic or alkali, and also to extract from said liquor the resinous and allied substances, and
- the wood is eit er cut or ground into pieces of convenient size and then boiled in a caustic or alkaline solution.
- a caustic or alkaline solution In the rocess of producing aper from wooden r, the wood is eit er cut or ground into pieces of convenient size and then boiled in a caustic or alkaline solution.
- all the intercellulose substance, such as'resinous material, etc. is extracted from the wood and dissolved in the caustic or alkaline solution.
- the solution is boiled down to a syrupy consistency and then fired, whereby the resinous matter becomes entirely carbonized.
- the residue is again dis-- solved in water, and then filtered.
- the resinous material is not only lost, but it requires a great amount of fuel to'carbonize or burn up the same, so as to be* enabled to reclaim the alkaline or caustic matter. In this process, a great amount of.
- each of these compartments is provided with an electrode, the electrode of the negative compartment may consist of copper, iron or lead or other suitable conductor, but the electrode of the positive compartment should consist if possible of a material not injuriously affected by the electrolyzing action of the current, such for instance as platinum, but as the price of this metal may be a bar to employ-' mg the same, lead, graphite, or carbon may be'used instead.
- trode contained in the negative compartment is connected to the negative pole of the char ing circuit, and the electrode contained in t e positive compartment is connected to the ositive pole of the charging circuit.
- the test will show that the contents of the negative compartment has acquired a stronger alkaline re-action than the contents of the positive compartment.
- I have generally added a slight amount of sulfuric acid in the positive com artment, so as to hasten the separation of t 1e resinous matter from its liquid contents.
- the negative compartment consists at the beginning of pure! water with an addition of salt, or consists'gin the be inning of spent liquor with anaddition 0 salt, the result- 'ant product is:, in the negative compartment, an alkali, and in the positive comthat it will, in its gaseous state, leave the tents of the ed, I would suggest that t partment, the resinous material mostl floating on top, because of its fine subdiv1-. sion, and the chlorin or chlorinated liquid.
- the chlorin enerated in the positive compartment wfil be in such superabundance compartment and it is therefore advisable, for the purpose of protecting the atmosphere, as well as for the purpose of saving the chlorin as, to close the positive compartment an to provide the same with an outlet pipe, preferably passin into a tank of water.
- This water as we as the conositive compartment, after being cleared rom the resmous and allied matter, may then be used for the purpose of bleaching as is well known by persons versed in the art. a For such mills where my process is adapte usual high temperature should not be employed in the treatment of the. wood fiber with the caustic liquor, as the lower the temperature adopted, the more perfect will be the state of the reclaimed resinous and other matter, and the better quality of the product more than repays for the greater length of time required.
- FIG. 1 illustrates in a partial section and partial diagram one arrangement in which an electrolytic a paratus is used to recover simultaneously e caustic and resinous substances
- Fig. 2 is a plan view of the material designed tor-strain the 1iquid
- A is the tank containing the spent liquor B
- this tank is provided with the pi e G connected 'with the interposition of t e valve D to the pipe E, havmg the branch- %ipes E and It, provided with the valves 1 and D respectively.
- the electrolytic ap aratus consists of the containing vessel G, liere divided into two compartments B and B each filled with the necessa liquid. These compartments are divided y the porous (partition C the compartment B is provi ed with the electrode H, and the compartment B is provided with the electrode I. These two compartments are also provided with the removable rece tacles g and g respectively.
- These remova ble receptacles preferably consist of a material, such as a very closely woven wire gauze or textile, so as to be able to collect the mechanical impurities contained in the liquid to be electrolyzed, and also so as to be able to collect the resinous material and to have the drained-out liquids as pure and clarified as possible; for this reason I have also provided the guards J, J,
- the process of treatin s ent liquor from pa er or pulp mills w ic comprises placing t e spent liquor in the positive compartment of an electrolytic apparatus, in placing a solution of salt in the negative compartment of said apparatus, in sending currents of electricity through said compartments whereby the solution in the ne ative compartment becomes alkaline and t e intercellulose and resinous material is retained in the positive compartment.
- the process of treatin s ent liquor from paper or pulp mills w icli comprises subjecting said spent liquor to the action of an electric current in the positive compartment of an electrolytic ap aratus, the negative compartment of said tainin a second conducting fluld.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Paper (AREA)
Description
I. KITSEE. PROCESS OF TREATING THE SPENT LIQUOR OF PAPER MILLS. A'n'moumx rnmn FEB. 20,1902. nnsswsn APR. 8, 1900.
942,207. Pat ented Dec. 7, i909.
WITNESSES r v INVENTOR amawz Z ISIDOB KITSEE, OF PHILADELPHIA, PENNSYLVANIA.-
PROCESS OF TREATING THE SPENT LIQUOR OF PAPER-MILLS.
Specification of Letters Patent.
Patented Dec. 7, 1909.
Application filed l'ebrueryzo, 1908, Serial No. 144,347. Renewed April 8, 1909. Serial No. 488,788.
To all whom it may concern:
Be it known that I IsmoR Krrsnn, of the city and county of Ihiladelphia, State of Pennsylvania, have invented a certain new and useful Im rovement in the Process of Treatin the pent Liquor of Paper or Pulp ills, of which the following is a specific'atio My invention relates to an improvement in the process of treating the spent li uor of paper or pulp mills, so as to be ena led to extract from said spent liquor the caustic or alkali, and also to extract from said liquor the resinous and allied substances, and
it is the further, aim ofmy invention to prepare the reclaimed caustic or alkall in a manner so as toimpart to the same the causticity necessary for its reemployment.
In the rocess of producing aper from wooden r, the wood is eit er cut or ground into pieces of convenient size and then boiled in a caustic or alkaline solution. Through this process, all the intercellulose substance, such as'resinous material, etc., is extracted from the wood and dissolved in the caustic or alkaline solution. To reclaim the caustic ,or alkali, the solution is boiled down to a syrupy consistency and then fired, whereby the resinous matter becomes entirely carbonized. The residue is again dis-- solved in water, and then filtered. In this process, the resinous material is not only lost, but it requires a great amount of fuel to'carbonize or burn up the same, so as to be* enabled to reclaim the alkaline or caustic matter. In this process, a great amount of.
hydrated alkali has always to be added to kee up the causticity, as it is technically cal ed. It is one of the aims of my invention, to
' vent its use.
other by a porous septum. Each of these compartments is provided with an electrode, the electrode of the negative compartment may consist of copper, iron or lead or other suitable conductor, but the electrode of the positive compartment should consist if possible of a material not injuriously affected by the electrolyzing action of the current, such for instance as platinum, but as the price of this metal may be a bar to employ-' mg the same, lead, graphite, or carbon may be'used instead. I am well aware that the lead will slowly oxidize and may even impart to the liquid in the positive compartment a reddish tint, but as the liquid contents of this compartment will not be used for any other purpose than for separating the resinous maternal, this action of the current will not be detrimental enou h to pre- The' connection 0% the two electrodes as to the charging current is as .usual. The negative electrode or the elec-.
trode contained in the negative compartment is connected to the negative pole of the char ing circuit, and the electrode contained in t e positive compartment is connected to the ositive pole of the charging circuit. In a s ort time, the test will show that the contents of the negative compartment has acquired a stronger alkaline re-action than the contents of the positive compartment. In my experiments, I have generally added a slight amount of sulfuric acid in the positive com artment, so as to hasten the separation of t 1e resinous matter from its liquid contents. After the current has passed through the electrolytic aparatus for a suflicient length of time, it was ound that all the alkali hadaccumulated in the negative compartment and all the acid in the positive compartment, but the liquid in the ne ative compartment remained surcharget? with various matters and it needed a second process to clarify this liquid. In my later experiments, .I therefore used the following arrangement :I placed the spent liquoronly in the positive compartment of the. electrolytic apparatus containing two compartments, using in the second or negative compartment ,plain water, and as this water has to be made more conductlng and as it was necessary to add to the resulting caustic liquid of the former e rperiments more caustic, I added to the plam water a 'chlorid of sodium, known in commerce, as
positive compartment becomes aciduous and the resinous material thereby coagulates and separates out of the liquid. Third,t he liquor in the negative compartment remains clear and unadulterated. Fourth,the necessary degree of causticity is imparted to the liquid. But, it is obvious, that to regain for the negative compartment the degree of causticity required will take agreater length of time than if part of the spent liquor would have been therein. Andlt is a matter-to be decided by the person in charge of the plant, if the first method should be employed or if the second method is preferred 1n his particular case. In both cases, if
the negative compartment consists at the beginning of pure! water with an addition of salt, or consists'gin the be inning of spent liquor with anaddition 0 salt, the result- 'ant product is:, in the negative compartment, an alkali, and in the positive comthat it will, in its gaseous state, leave the tents of the ed, I would suggest that t partment, the resinous material mostl floating on top, because of its fine subdiv1-. sion, and the chlorin or chlorinated liquid. In such cases, where the spent liquor has only traces of resinous material, and where the causticity should be of a greater degree, the chlorin enerated in the positive compartment wfil be in such superabundance compartment and it is therefore advisable, for the purpose of protecting the atmosphere, as well as for the purpose of saving the chlorin as, to close the positive compartment an to provide the same with an outlet pipe, preferably passin into a tank of water. This water, as we as the conositive compartment, after being cleared rom the resmous and allied matter, may then be used for the purpose of bleaching as is well known by persons versed in the art. a For such mills where my process is adapte usual high temperature should not be employed in the treatment of the. wood fiber with the caustic liquor, as the lower the temperature adopted, the more perfect will be the state of the reclaimed resinous and other matter, and the better quality of the product more than repays for the greater length of time required.
In the accompanying drawing, in which Figure 1 illustrates in a partial section and partial diagram one arrangement in which an electrolytic a paratus is used to recover simultaneously e caustic and resinous substances, and in which Fig. 2 is a plan view of the material designed tor-strain the 1iquid,A is the tank containing the spent liquor B, this tank is provided with the pi e G connected 'with the interposition of t e valve D to the pipe E, havmg the branch- %ipes E and It, provided with the valves 1 and D respectively.
The electrolytic ap aratus consists of the containing vessel G, liere divided into two compartments B and B each filled with the necessa liquid. These compartments are divided y the porous (partition C the compartment B is provi ed with the electrode H, and the compartment B is provided with the electrode I. These two compartments are also provided with the removable rece tacles g and g respectively. These remova ble receptacles preferably consist of a material, such as a very closely woven wire gauze or textile, so as to be able to collect the mechanical impurities contained in the liquid to be electrolyzed, and also so as to be able to collect the resinous material and to have the drained-out liquids as pure and clarified as possible; for this reason I have also provided the guards J, J,
woven wire gauze or textile. The compart-' ment B is provided with the outlet pipe F containing the valve D and the compartment B is provided with the outlet pipe F containing the valve D. It is obvious that the arrangement of this electrolytic ap aratus may differ and I have illustrat a form which I have found well adaptedfor the urpose.
aving now described my invention, what I claim asnew'and desire to secure by Letters Patent is 1. The process of treatin s ent liquor from pa er or pulp mills w ic comprises placing t e spent liquor in the positive compartment of an electrolytic apparatus, in placing a solution of salt in the negative compartment of said apparatus, in sending currents of electricity through said compartments whereby the solution in the ne ative compartment becomes alkaline and t e intercellulose and resinous material is retained in the positive compartment.
2. The process of treatin s ent liquor from paper or pulp mills w icli comprises subjecting said spent liquor to the action of an electric current in the positive compartment of an electrolytic ap aratus, the negative compartment of said tainin a second conducting fluld.
3. e process of recovering the caustic apparatus con- 942,207 H n a and resinous matter Of the spenfi liquor from ne'sses, this seventeenth day of February,
paper 01" pulp 1mills, 'vLhich cldmpnses m1ak- A. D. 1903. V
m said spent iquort e ano yte in an'e ec- I tri c apparatus and sending currents of elec- ISIDOR KITSEE' 5 tricity through said apparatus.- Witnesses:
. In testimony whereof, I hereby sign my I EDITH R. STILLEY,
name in the presence of two subscribing wit- 1 CHAs. KRESSENBUCH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48873309A US942207A (en) | 1909-04-08 | 1909-04-08 | Process of treating the spent liquor of paper-mills. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48873309A US942207A (en) | 1909-04-08 | 1909-04-08 | Process of treating the spent liquor of paper-mills. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US942207A true US942207A (en) | 1909-12-07 |
Family
ID=3010629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US48873309A Expired - Lifetime US942207A (en) | 1909-04-08 | 1909-04-08 | Process of treating the spent liquor of paper-mills. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US942207A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2669542A (en) * | 1950-03-30 | 1954-02-16 | American Viscose Corp | Electrolysis of sodium sulfate |
| US2905604A (en) * | 1956-01-05 | 1959-09-22 | Absalom M Kennedy | Process and apparatus for electrolytically treating black liquor |
| US4238304A (en) * | 1979-08-30 | 1980-12-09 | Raybestos-Manhattan, Inc. | Method for improved recovery of tall oil from black liquors |
| AT377546B (en) * | 1983-02-25 | 1985-03-25 | Dieter J Becker | METHOD FOR PURIFYING CELLULAR PRODUCTION, ESPECIALLY CHLORINE BLEACHING CELLFUM, WASTE WASTE |
| US5164480A (en) * | 1991-08-20 | 1992-11-17 | Union Camp Corporation | Method for the manufacture of tall oils |
-
1909
- 1909-04-08 US US48873309A patent/US942207A/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2669542A (en) * | 1950-03-30 | 1954-02-16 | American Viscose Corp | Electrolysis of sodium sulfate |
| US2905604A (en) * | 1956-01-05 | 1959-09-22 | Absalom M Kennedy | Process and apparatus for electrolytically treating black liquor |
| US4238304A (en) * | 1979-08-30 | 1980-12-09 | Raybestos-Manhattan, Inc. | Method for improved recovery of tall oil from black liquors |
| AT377546B (en) * | 1983-02-25 | 1985-03-25 | Dieter J Becker | METHOD FOR PURIFYING CELLULAR PRODUCTION, ESPECIALLY CHLORINE BLEACHING CELLFUM, WASTE WASTE |
| US5164480A (en) * | 1991-08-20 | 1992-11-17 | Union Camp Corporation | Method for the manufacture of tall oils |
| WO1993003815A1 (en) * | 1991-08-20 | 1993-03-04 | Union Camp Corporation | Method for the manufacture of tall oils |
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