CN110665354A - Scrubber solution - Google Patents
Scrubber solution Download PDFInfo
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- CN110665354A CN110665354A CN201910327885.9A CN201910327885A CN110665354A CN 110665354 A CN110665354 A CN 110665354A CN 201910327885 A CN201910327885 A CN 201910327885A CN 110665354 A CN110665354 A CN 110665354A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
Abstract
A scrubber solution comprising a mixture of an alkaline solution, an inorganic salt, and water, wherein the alkaline solution is sodium hydroxide and sodium sulfide, wherein the inorganic salt is sodium thiosulfate, and wherein the sodium hydroxide used in the scrubber solution is in a weight concentration range of 0.2% to 75.8%, the sodium thiosulfate used in the scrubber solution is in a weight concentration range of 0.1% to 50%, the sodium sulfide used in the scrubber solution is in a weight concentration range of 0.1% to 30%, and wherein the balance is the water to bring the scrubber solution to 100%.
Description
Technical Field
The present invention relates to a scrubber solution, and in particular to a scrubber solution for removing gaseous and/or dissolved chlorine present in a scrubber tower during manufacture of impregnated latex products (e.g., gloves).
Background
The scrubbing solution is typically used in scrubbing applications (in scrubbing towers) to remove gaseous chlorine. Common wash solutions include, but are not limited to, sodium hydroxide, potassium hydroxide, sodium carbonate, calcium hydroxide, sodium sulfite, sodium thiosulfate, and hydrogen peroxide, with the preferred wash solution being sodium hydroxide. The washing reaction using sodium hydroxide as the washing solution can be summarized as follows:
Cl2(g)+2NaOH(aq)→NaOCl(aq)+NaCl(aq)+H2O(l)
since gaseous chlorine will be continuously fed to the scrubber, a sufficient amount of sodium hydroxide solution is required to purge the scrubber of gaseous chlorine. However, once the scrubber is saturated with gaseous chlorine due to the limited supply of scrubber solution, the gaseous chlorine may begin to be vented from the scrubber (due to pressure build-up). Simply stated, an excess of sodium hydroxide is typically required to ensure that gaseous chlorine is not vented to the atmosphere without proper disposal.
Sodium hypochlorite (NaOCl) is considered to be one of the main by-products of the scrubbing process, which is hereinafter referred to as scrubber waste. Scrubber waste must be treated with Sodium Metabisulfite (SMBS) or any thiosulfate-type chemicals before being discharged into a wastewater treatment plant because scrubber waste is harmful to the environment. This additional step can introduce additional cost to the processor and complicate the steps of obtaining the final product.
Thus, it is apparent from the above disclosure that the existing scrubber solutions have their own disadvantages. Accordingly, there is a need for a more advantageous and/or efficient scrubber solution that would eliminate the need for post-treatment and overcome the above-mentioned disadvantages (i.e., is cost-effective and produces environmentally friendly waste) compared to the prior art.
Disclosure of Invention
The invention relates to a scrubber solution comprising a mixture of:
(a) an alkaline solution, wherein the alkaline solution is (i) any one selected from the group consisting of sodium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide, sodium carbonate, potassium carbonate, calcium carbonate, sodium bicarbonate, potassium bicarbonate, and calcium bicarbonate, or any one selected from the group consisting of sodium carbonate, potassium carbonate, calcium carbonate, sodium bicarbonate, potassium bicarbonate, and calcium bicarbonate used in combination with sodium hydroxide; and (ii) any one selected from the group consisting of sodium sulfide, potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate, or any one selected from the group consisting of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate in combination with sodium sulfide;
(b) an inorganic salt, wherein the inorganic salt is any one selected from the group consisting of sodium thiosulfate, potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium hydrosulfite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate, or any one selected from the group consisting of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium hydrosulfite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium metabisulfite, sodium bisulfate, and potassium bisulfate is used in combination with sodium thiosulfate; and
(c) and (3) water.
Further, the present invention relates to a scrubber solution comprising a mixture of an alkaline solution, an inorganic salt and water, wherein the alkaline solution is sodium hydroxide and sodium sulfide, wherein the inorganic salt is sodium thiosulfate, and wherein the weight concentration of the sodium hydroxide used in the scrubber solution ranges from 0.2% to 75.8%, the weight concentration of the sodium thiosulfate used in the scrubber solution ranges from 0.1% to 50%, the weight concentration of the sodium sulfide used in the scrubber solution ranges from 0.1% to 30%, and wherein the balance is the water to bring the scrubber solution to 100%.
Other aspects, features and advantages of the present invention will become apparent to those skilled in the art from the following detailed description of the preferred embodiments of the invention when considered in conjunction with the drawings set forth below.
Drawings
The present invention will become more fully understood from the detailed description given here below and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein:
in the drawings:
figure 1 shows a flow diagram showing the difference between the present invention and the conventional route in the treatment of waste generated after the washing process.
Detailed Description
Detailed descriptions of preferred embodiments of the invention are disclosed herein. However, it is to be understood that the described embodiments are merely exemplary of the invention, which can be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention. Numerical data or ranges used in the specification should not be construed as limitations.
The invention relates to a scrubber solution, in particular for removing gaseous and/or dissolved chlorine present in a scrubber tower during glove manufacturing. In glove manufacturing processes, but not limited to glove manufacturing processes, scrubber solutions are used to remove gaseous and/or dissolved chlorine present in the scrubber tower, and subsequently eliminate the need for post-treatment steps prior to discharge into a wastewater treatment plant.
In short, the scrubber solution of the present invention saves industrial costs of disposing of the scrubber system by eliminating further treatment (additional steps) of the waste prior to discharge to a wastewater treatment plant. Thus, the present invention is not only cost effective, but also produces environmentally friendly waste (i.e., almost completely free of gaseous and/or dissolved chlorine). For the purposes of the present invention, the term "almost completely" may include trace and/or insignificant amounts of gaseous and/or dissolved chlorine in the scrubber system. The following detailed description of the preferred embodiments will now be described with reference to the accompanying drawings.
The scrubber solution comprises a mixture of an alkaline solution, an inorganic salt and water. The alkaline solution is sodium hydroxide and sodium sulfide. In the scrubber system of the invention, sodium hydroxide or a possible alternative thereof is used to maintain the pH of the system at least 7. The sodium hydroxide may be replaced with any one of potassium hydroxide, magnesium hydroxide, calcium hydroxide, sodium carbonate, potassium carbonate, calcium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, and calcium hydrogen carbonate, or may be used in combination with any one of sodium carbonate, potassium carbonate, calcium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, and calcium hydrogen carbonate.
Furthermore, it is ensured that the substitute in place of sodium hydroxide or a combination thereof matches the alkalinity of the sodium hydroxide (when it is used alone). For the purposes of the present invention, sodium hydroxide, potassium hydroxide, magnesium hydroxide and calcium hydroxide may be generally referred to as "metal hydroxides". For the purposes of the present invention, sodium carbonate, potassium carbonate and calcium carbonate may be generally referred to as "metal carbonates".
For the purposes of the present invention, sodium bicarbonate, potassium bicarbonate and calcium bicarbonate can be generally referred to as "metal bicarbonates". Since metal carbonates and metal bicarbonates are weaker pH adjusters, the amounts required to provide similar results to sodium hydroxide (when using a particular weight concentration) when used alone are expected to be at least 3 to 4 times and at least 8 to 9 times that of sodium hydroxide, respectively.
In the scrubber system of the present invention, sodium sulfide and sodium thiosulfate function to convert gaseous and/or dissolved chlorine to chloride ions, and therefore they are referred to as reducing agents. In general, metals of any two or more of sulfide, polysulfide, thiosulfate, sulfate, bisulfate, dithionite, metabisulfite, sulfite, and bisulfite can function as reducing agents and can replace sodium sulfide and sodium thiosulfate.
Preferably, the sodium sulfide may be replaced with any one of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate in an equivalent weight (equivalent weight) to sodium sulfide. Alternatively, sodium sulfide may be used in combination with any one of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate in a weight equivalent to that of sodium sulfide.
The inorganic salt is sodium thiosulfate. For the purposes of the present invention, the term "inorganic salts" may also be referred to as "inorganic compounds". Preferably, the sodium thiosulfate can be replaced with any one of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate in a weight equivalent to that of the sodium thiosulfate.
Alternatively, sodium thiosulfate can be used in combination with any of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate in a weight equivalent to sodium thiosulfate. For the purposes of the present invention, the term "weight" means "weight concentration".
For the purposes of the present invention, if sodium sulfide and sodium thiosulfate are to be replaced simultaneously, the substitutes must be distinguishable in the preparation of the scrubber solution, provided that the scrubber solution is composed of at least three components. For example, if potassium sulfide is to be used instead of sodium sulfide, then components other than potassium sulfide (as listed in the preceding paragraph) must be used instead of sodium thiosulfate. For the purposes of the present invention, if sodium sulfide is used in combination with any of the alternatives described above, and if sodium thiosulfate is also used in combination with any of the alternatives described above, the components that will be combined with sodium sulfide and sodium thiosulfate can be the same and/or can be different.
The scrubber solution was prepared using the following steps:
i. diluting sodium hydroxide with water to form a diluted sodium hydroxide solution;
successively adding sodium sulfide and sodium thiosulfate, without specific order, to the diluted sodium hydroxide solution to form a mixture; and
stirring the mixture until all flakes and solids are dissolved, resulting in the scrubber solution.
For the purposes of the present invention, the phrase "without a specific order" means that the sodium sulfide may be added first to the diluted sodium hydroxide solution and then the sodium thiosulfate; or vice versa. For the purposes of the present invention, sodium hydroxide may be in any form, i.e., solid, crystalline or liquid. For the purposes of the present invention, the sodium sulfide may be in flake or solid form, preferably flake. For the purposes of the present invention, sodium thiosulfate can be in solid or liquid form, preferably solid.
The sodium hydroxide is used in the scrubber solution in a concentration range of 0.2% to 75.8% by weight, preferably 22.5%. The sodium thiosulfate concentration used in the scrubber solution ranges from 0.1% to 50%, preferably 5%, by weight. The sodium sulphide concentration used in the scrubber solution ranges from 0.1% to 30%, preferably 10%, by weight. The balance being water to bring the scrubber solution to 100%.
The focus of the present invention is to scrub gaseous and/or dissolved chlorine from the scrubber system to prevent the gaseous and/or dissolved chlorine from being vented to the environment/atmosphere. The scrubber solution of the present invention is capable of almost completely removing gaseous and/or dissolved chlorine from the scrubber system, such that waste generated and/or produced in the scrubber system does not require post-treatment before discharge to a wastewater treatment plant. For the purposes of the present invention, the term "almost completely" may include trace and/or insignificant amounts of gaseous and/or dissolved chlorine in the scrubber system.
Experimental runs have been conducted in scrubber systems to show the efficiency of the scrubber solution of the present invention relative to conventional scrubber solutions. A conventional scrubber solution is sodium hydroxide. The results of the test runs were determined periodically by measuring the percentage of available chlorine in the scrubber waste using iodometry. In addition to the above, the consumption and stack chlorine concentration (ppm) were monitored during the washing process. Table 1 shows the consumption and washing efficiency of the conventional scrubber solution and the inventive scrubber solution in a scrubber system.
Table 1: consumption of scrubber solution (conventional and inventive) in scrubber system and efficiency of scrubbing
DOE is the environmental sector
DOE standard of chimney chlorine concentration is<10ppm (or 32 mg/Nm)3)
Based on table 1, it is evident that the scrubber solution of the present invention is capable of almost completely removing chlorine from the scrubber system, which can be obtained from the amounts shown under the parameters "available chlorine in scrubber waste (%)". The results of stack chlorine concentration are further evidence demonstrating the efficiency of the scrubber solution of the present invention relative to conventional scrubber solutions. When the components of the scrubber solution of the present invention are replaced with alternatives and/or used in combination, the efficiency of the scrubber solution of the present invention as shown in table 1 is still maintained, as disclosed above, i.e., similar stack chlorine concentration (ppm) and available chlorine (%) in the scrubber waste will be achieved when in alternatives and/or combinations, but with different consumption (kg/month).
Scrubber waste generated after the washing process is directed and/or discharged into a wastewater treatment plant. Figure 1 shows the difference between the present invention and the conventional route in the treatment of waste generated after the washing process. Both scrubber wastes were treated using conventional wastewater treatment processes. Table 2 shows the discharge parameters of the two scrubber wastes after wastewater treatment.
Table 2: discharge parameters of two wastes after wastewater treatment
COD is chemical oxygen demand
TSS is total suspended solids
Based on Table 2, it is evident that the present route produces treated waste that meets overall emission standards, whereas the conventional route does not. Performing this test shows that scrubber waste produced using the scrubber solution of the present invention can be treated separately (without mixing with other wastewater) by conventional coagulation, flocculation and filtration processes set forth by industrial wastewater treatment systems (IETS). Since the scrubber solution of the present invention is different from scrubber solutions conventionally used for chlorine removal, it is contemplated that the matrix of the scrubber waste is different. Therefore, a wastewater treatment process must be performed to ensure that scrubber waste can be treated.
Thereafter, the scrubber waste, prior to being subjected to the conventional coagulation, flocculation and filtration processes set by IETS, will be mixed with wastewater from other production processes to ensure that the waste meets discharge standards. Thus, the two treated wastes are separately mixed with wastewater from an industrial wastewater treatment system (IETS) to ensure that it does not affect the quality of the final discharge water.
Table 3 shows a comparison of the discharge parameters of the mixture of treated waste and IETS water.
Table 3: comparison of discharge parameters of mixtures of treated waste and IETS Water
COD is chemical oxygen demand
TSS is total suspended solids
Since the scrubber solution of the present invention is different from conventional scrubber solutions, it is contemplated that the matrix of the scrubber waste is different. Thus, the test was performed to show that the use of the scrubber solution of the present invention does not affect downstream processes. Thus, the results in table 3 indicate that all wastewater is within the discharge standards.
The following examples are constructed to illustrate the invention in a non-limiting sense.
Composition of scrubber solution
Example 1
A scrubber solution comprising a mixture of:
a) an alkaline solution, wherein the alkaline solution is (i) any one selected from the group consisting of sodium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide, sodium carbonate, potassium carbonate, calcium carbonate, sodium hydrogencarbonate, potassium hydrogencarbonate and calcium hydrogencarbonate, or any one selected from the group consisting of sodium carbonate, potassium carbonate, calcium carbonate, sodium hydrogencarbonate, potassium hydrogencarbonate and calcium hydrogencarbonate, in combination with sodium hydroxide, and (ii) any one selected from the group consisting of sodium sulfide, potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate and potassium bisulfate, or selected from the group consisting of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium metabisulfite, sodium bisulfite, potassium sulfite, sodium metabisulfite, sodium hydrogen sulfite, sodium hydrogen sulfide, potassium polysulfide, sodium, Any one of sodium hydrogen sulfate and potassium hydrogen sulfate is used in combination with sodium sulfide;
b) an inorganic salt, wherein the inorganic salt is any one selected from the group consisting of sodium thiosulfate, potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate, or any one selected from the group consisting of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium metabisulfite, sodium bisulfate, and potassium bisulfate is used in combination with sodium thiosulfate;
c) water; and is
Wherein the alkaline solution disclosed in a) (i) is used in the scrubber solution in a weight concentration range of 0.2% to 75.8%, preferably 22.5%, wherein the alkaline solution disclosed in a) (ii) is used in the scrubber solution in a weight concentration range of 0.1% to 30%, preferably 10%, wherein the inorganic salt is used in the scrubber solution in a weight concentration range of 0.1% to 50%, preferably 5%, and wherein the balance is water to bring the scrubber solution to 100%.
Example 2
A scrubber solution comprising a mixture of:
a) an alkaline solution, wherein the alkaline solution is sodium hydroxide and sodium sulfide;
b) an inorganic salt, wherein the inorganic salt is sodium thiosulfate;
c) water; and is
Wherein the sodium hydroxide is used in the scrubber solution in a weight concentration range of 0.2% to 75.8%, preferably 22.5%, the sodium thiosulfate is used in the scrubber solution in a weight concentration range of 0.1% to 50%, preferably 5%, the sodium sulfide is used in the scrubber solution in a weight concentration range of 0.1% to 30%, preferably 10%, the balance being water to bring the scrubber solution to 100%.
Preparation of scrubber solution
The scrubber solution was prepared using the following steps:
i. diluting sodium hydroxide with water to form a diluted sodium hydroxide solution;
successively adding, without specific order, sodium sulfide flakes and sodium thiosulfate solids to the diluted sodium hydroxide solution to form a mixture; and
stirring the mixture until all flakes and solids are dissolved, resulting in the scrubber solution.
For the purposes of the present invention, the phrase "without a specific order" means that the sodium sulfide flakes can be added first to the dilute sodium hydroxide solution, followed by the addition of the sodium thiosulfate solids; or vice versa.
In general, the scrubber solution prepared in the present invention is capable of almost completely removing gaseous and/or dissolved chlorine from the scrubber system and effectively minimizing gaseous chlorine emissions from the stack, which produces significant and/or unexpected results. Furthermore, the scrubber solution used in the present invention eliminates the need for any post-treatment of the waste produced by the scrubber system prior to discharge to a wastewater treatment plant.
Importantly, the waste treated according to the route of the present invention is within the environmental ministry set discharge standards, as is evident from tables 1, 2 and 3. Finally, the waste treated according to the route of the invention, even if mixed with the waste water of IETS, does not affect the final discharge quality.
The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having," are inclusive and therefore specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Unless specifically stated to the order of execution, the method steps, processes, and operations described herein are not to be construed as necessarily requiring their execution in the particular order discussed or illustrated. It should also be understood that additional or alternative steps may be employed. The use of the expression "at least" or "at least one" implies the use of one or more elements, as may be used in one of the embodiments to achieve one or more desired objectives or results.
Claims (12)
1. A scrubber solution comprising a mixture of:
(a) an alkaline solution, wherein the alkaline solution is (i) any one selected from the group consisting of sodium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide, sodium carbonate, potassium carbonate, calcium carbonate, sodium bicarbonate, potassium bicarbonate, and calcium bicarbonate, or any one selected from the group consisting of sodium carbonate, potassium carbonate, calcium carbonate, sodium bicarbonate, potassium bicarbonate, and calcium bicarbonate used in combination with sodium hydroxide; and (ii) any one selected from the group consisting of sodium sulfide, potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate, or any one selected from the group consisting of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate in combination with sodium sulfide;
(b) an inorganic salt, wherein the inorganic salt is any one selected from the group consisting of sodium thiosulfate, potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium hydrosulfite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate, or any one selected from the group consisting of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium hydrosulfite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium metabisulfite, sodium bisulfate, and potassium bisulfate is used in combination with sodium thiosulfate; and
(c) and (3) water.
2. The scrubber solution as set forth in claim 1 wherein the basic solution disclosed in (a) (i) is used in the scrubber solution at a weight concentration ranging from 0.2% to 75.8%.
3. The scrubber solution as set forth in claim 1 wherein the basic solution disclosed in (a) (ii) is used in the scrubber solution at a weight concentration ranging from 0.1% to 30%.
4. The scrubber solution as set forth in claim 1 wherein the inorganic salt is used in the scrubber solution at a weight concentration ranging from 0.1% to 50%.
5. The scrubber solution as set forth in claims 1 to 4 wherein the balance is the water to bring the scrubber solution to 100%.
6. A scrubber solution comprising a mixture of an alkaline solution, an inorganic salt, and water, wherein the alkaline solution is sodium hydroxide and sodium sulfide, wherein the inorganic salt is sodium thiosulfate, and wherein the weight concentration of the sodium hydroxide used in the scrubber solution ranges from 0.2% to 75.8%, the weight concentration of the sodium thiosulfate used in the scrubber solution ranges from 0.1% to 50%, the weight concentration of the sodium sulfide used in the scrubber solution ranges from 0.1% to 30%, and wherein the balance is the water to bring the scrubber solution to 100%.
7. The scrubber solution as set forth in claim 6 wherein the sodium hydroxide can be replaced with any one of potassium hydroxide, magnesium hydroxide, calcium hydroxide, sodium carbonate, potassium carbonate, calcium carbonate, sodium bicarbonate, potassium bicarbonate, and calcium bicarbonate.
8. The scrubber solution as set forth in claim 6 wherein the sodium hydroxide can be used in combination with any one of potassium hydroxide, magnesium hydroxide, calcium hydroxide, sodium carbonate, potassium carbonate, calcium carbonate, sodium bicarbonate, potassium bicarbonate, and calcium bicarbonate.
9. The scrubber solution as set forth in claim 6 wherein the sodium sulfide can be replaced with any one of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium hydrosulfite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate.
10. The scrubber solution of claim 6 wherein the sodium sulfide can be used in combination with any of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium hydrosulfite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate.
11. The scrubber solution of claim 6 wherein the sodium thiosulfate can be replaced with any one of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium dithionite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate.
12. The scrubber solution of claim 6 wherein the sodium thiosulfate can be used in combination with any one of potassium sulfide, sodium polysulfide, potassium polysulfide, calcium thiosulfate, sodium hydrosulfite, sodium sulfite, potassium sulfite, sodium bisulfite, potassium bisulfite, sodium metabisulfite, sodium bisulfate, and potassium bisulfate.
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| MYPI2018001240A MY191552A (en) | 2018-07-02 | 2018-07-02 | Scrubber solution |
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| CN110665354A true CN110665354A (en) | 2020-01-10 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060104876A1 (en) * | 2004-11-16 | 2006-05-18 | Tessenderlo Kerley, Inc. | Magnesium thiosulfate as ozone and chlorine quencher |
| CN101448560A (en) * | 2006-05-19 | 2009-06-03 | 拜尔材料科学股份公司 | Method for absorbing chlorine from a gas containing chlorine and carbon dioxide |
| CN102188891A (en) * | 2011-05-06 | 2011-09-21 | 北京化工大学 | Purification process for acid oxidation and alkaline reduction of waste gas containing nitrogen oxide |
| CN102489132A (en) * | 2011-11-23 | 2012-06-13 | 武汉兴能环保技术有限公司 | Novel dual-alkali desulfurization method for removal of sulfur dioxide from flue gas and generation of elemental sulfur as byproduct |
| CN103977694A (en) * | 2014-06-05 | 2014-08-13 | 株洲三特环保节能股份有限公司 | Method and system for removing sulfur dioxide in flue gas |
| CN108176208A (en) * | 2017-12-21 | 2018-06-19 | 山东大学 | A kind of efficient wet denitration agent for coordinating preposition oxidation technology |
-
2018
- 2018-07-02 MY MYPI2018001240A patent/MY191552A/en unknown
-
2019
- 2019-04-23 CN CN201910327885.9A patent/CN110665354A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060104876A1 (en) * | 2004-11-16 | 2006-05-18 | Tessenderlo Kerley, Inc. | Magnesium thiosulfate as ozone and chlorine quencher |
| CN101448560A (en) * | 2006-05-19 | 2009-06-03 | 拜尔材料科学股份公司 | Method for absorbing chlorine from a gas containing chlorine and carbon dioxide |
| CN102188891A (en) * | 2011-05-06 | 2011-09-21 | 北京化工大学 | Purification process for acid oxidation and alkaline reduction of waste gas containing nitrogen oxide |
| CN102489132A (en) * | 2011-11-23 | 2012-06-13 | 武汉兴能环保技术有限公司 | Novel dual-alkali desulfurization method for removal of sulfur dioxide from flue gas and generation of elemental sulfur as byproduct |
| CN103977694A (en) * | 2014-06-05 | 2014-08-13 | 株洲三特环保节能股份有限公司 | Method and system for removing sulfur dioxide in flue gas |
| CN108176208A (en) * | 2017-12-21 | 2018-06-19 | 山东大学 | A kind of efficient wet denitration agent for coordinating preposition oxidation technology |
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