CN105561760A - Comprehensive treatment method for boiler smoke - Google Patents
Comprehensive treatment method for boiler smoke Download PDFInfo
- Publication number
- CN105561760A CN105561760A CN201410547651.2A CN201410547651A CN105561760A CN 105561760 A CN105561760 A CN 105561760A CN 201410547651 A CN201410547651 A CN 201410547651A CN 105561760 A CN105561760 A CN 105561760A
- Authority
- CN
- China
- Prior art keywords
- desulphurization
- doctor solution
- solution
- boiler smoke
- tower
- 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.)
- Pending
Links
Abstract
A comprehensive treatment method for boiler smoke includes the following steps that firstly, a desulphurization solution containing sodium hydrosulfide and sodium sulfide in a desulphurization tank is pumped into an inner cavity of a desulphurization tower through a desulphurization pump; secondly, sulfur dioxide in the smoke and sodium hydrosulfide and sodium sulfide in the desulphurization solution are reacted in the inner cavity of the desulphurization tower, and the reacted desulphurization solution drops into the lower part of the desulphurization tower and then flows into a buffer tank through a lye outlet; thirdly, an upper-layer solution of the desulphurization solution in the buffer tank flows into the desulphurization tank. According to the method, when the boiler smoke is desulfurated, the solution containing sodium hydrosulfide and sodium sulfide is treated at the same time; by means of the method, existing boiler smoke desulphurization equipment can be refitted without building new desulphurization equipment; by adopting the solution containing sodium hydrosulfide and sodium sulfide for removing sulfur dioxide in the boiler smoke, a lot of desulphurization water can be saved, the flue gas desulphurization cost is lowered, the effect of treating waste with waste is achieved, and great social benefits are achieved.
Description
Technical field
The present invention relates to a kind of boiler smoke administering method.
Background technology
Containing a certain amount of sulfur dioxide in the flue gas that present coal-burning boiler discharges, sulfur method conventional at present has limestone desulfurization method, the technique such as double alkali method desulfurizing and the ammonia process of desulfurization, these sulfur methods all need to consume more resource, cost is higher, the mixed liquor that a large amount of process sulfide hydrogen waste gas generates is had in current Some Enterprises, containing a certain amount of NaHS and vulcanized sodium in these mixed liquors, if what Treatment of Hydrogen Sulfide Waste Gas adopted is fresh sodium hydroxide solution, the mixed liquor generated can be used for making NaHS section, but Some Enterprises is because of the technique needs in production, a large amount of spent lyes can be produced, except containing a certain amount of NaOH in spent lye, also containing a large amount of impurity, these enterprises can process sulfide hydrogen waste gas with these spent lyes, be not suitable for making NaHS section with the mixed liquor that spent lye process sulfide hydrogen waste gas generates, how to process the difficult problem that these contain the mixed liquor Ye Shi enterprise of a large amount of impurity.
Summary of the invention
The object of the invention is to design a kind of cost low, in the process of process boiler smoke, the method for the comprehensive regulation boiler smoke containing NaHS and sodium sulfide solution can be processed simultaneously.
The method of a kind of comprehensive regulation boiler smoke of the present invention realizes as follows:
Step 1, with desulfur pump, the doctor solution containing NaHS and vulcanized sodium in desulfurization pond is pumped into the tower inner chamber of desulfurizing tower;
Step 2, in the tower inner chamber of desulfurizing tower, the sulfur dioxide in flue gas and the NaHS in doctor solution and vulcanized sodium react, and reacted doctor solution falls into desulfurizing tower bottom, then flow in Buffer Pool through gray water outlet;
The upper solution of the doctor solution in step 3, Buffer Pool flows into desulfurization pond;
Further comprising the steps of:
Steps A, in desulfurization pond, add solution containing NaHS and vulcanized sodium, make the concentration of the NaHS in doctor solution and vulcanized sodium remain in the scope of setting;
Step B, lower floor's solution of the doctor solution in Buffer Pool is entered floation tank, in floation tank, the sulphur produced in sweetening process contained in doctor solution flotates with foam-like, and the sulphur foam floatingly selected is refined into commodity sulphur through sulfur melting kettle.
Further, be improve desulfurized effect, described doctor solution is that the inner chamber spray thrower of tower inner chamber by being arranged on desulfurizing tower is pumped to tower inner chamber, inner chamber spray thrower is provided with shower nozzle doctor solution being dispersed into fine particle.
For improving desulfurized effect, further comprising the steps of, doctor solution is pumped into gas approach passage.
NaHS contained in described doctor solution and the total concentration of vulcanized sodium are 5 ~ 10g/L.
The volume ratio of the described doctor solution and flue gas that pump into the tower inner chamber of desulfurizing tower is 1:1000 ~ 1:250.
Further comprising the steps of, the moisture of the flue gas after desulfurization in demister removing flue gas.
The present invention is while carrying out desulfurization to boiler smoke, also processed containing NaHS and sodium sulfide solution simultaneously, adopt the present invention can transform on the basis of existing boiler flue gas desulfurization equipment, without the need to building new desulphurization plant, employing removes the sulfur dioxide in boiler smoke containing NaHS and sodium sulfide solution, also can save a large amount of desulfurization water, reduce flue gas desulfurization cost, reach with the effect of dirty pollution treatment, there is great social benefit.
Accompanying drawing explanation
Fig. 1 is the schematic diagram adopting the present invention to carry out the desulfurizer of desulfurization process.
Mark in figure:
1. gas approach passage, 2. tower inner chamber, 3. import spray thrower, 4. rotational flow plate defroster, 5. washer,
6. flap demister, 7. inner chamber spray thrower, 8. exhanst gas outlet passage, 9. Buffer Pool, 10. desulfur pump,
11. return ducts, 12. gray water outlet, 13. desulfurization pipes, 14. desulfurization arms, 15. cleaning arms, 16. desulfurization ponds,
17. storage tanks, 18. floation tanks, 19. sulphur foam cell, 20. sulfur melting kettles, 30. desulfurizing towers
Detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is further described.
Specific embodiment:
For being described in detail the present invention, be specifically described below in conjunction with employing device of the present invention.
Consult Fig. 1, inner chamber spray thrower 7 for spraying doctor solution is installed in the tower inner chamber 2 of desulfurizing tower 30, flap demister 6 and rotational flow plate defroster 4 are installed on the top of the tower inner chamber 2 of desulfurizing tower 30, washer 5 for cleaning flap demister 6 is installed in the both sides up and down of flap demister 6, gas approach passage 1 and gray water outlet 12 are arranged at the bottom of desulfurizing tower 30, exhanst gas outlet passage 8 is had on the top of desulfurizing tower 30, described gray water outlet 12 is communicated with Buffer Pool 9 by return duct 11, Buffer Pool 9 connects desulfurization pond 16 and floation tank 18 respectively by pipeline, described desulfurization pond 16 is by the import of pipeline communication desulfur pump 10, the outlet of desulfur pump 10 connects above-mentioned inner chamber spray thrower 7 by desulfurization pipe 13, desulfurization pipe 13 is drawn cleaning arm 15, cleaning arm 15 connects above-mentioned washer 5, above-mentioned floation tank 18 connects sulphur foam cell 19 by pipeline, sulphur foam cell 19 connects sulfur melting kettle 20 by pipeline, above-mentioned desulfurization pond 6 connects storage tank 17 by pipeline.
Before desulfurizer runs, in above-mentioned desulfurization pond 16, first press the deployed doctor solution containing NaHS and vulcanized sodium of technological requirement, then follow these steps to run:
Step 1, with desulfur pump 10, the doctor solution containing NaHS and vulcanized sodium in desulfurization pond 16 is pumped into the tower inner chamber 2 of desulfurizing tower 30;
Step 2, in the tower inner chamber 2 of desulfurizing tower 30, the sulfur dioxide in flue gas and the NaHS in doctor solution and vulcanized sodium react, and reacted doctor solution falls into desulfurizing tower 30 bottom, then flows into Buffer Pool 9 through gray water outlet 12, return duct 11;
The upper solution of the doctor solution in step 3, Buffer Pool 9 flows into desulfurization pond 16;
Further comprising the steps of:
Steps A, in desulfurization pond 16, add solution containing NaHS and vulcanized sodium, make the concentration of the NaHS in doctor solution and vulcanized sodium remain in the scope of setting;
Step B, lower floor's solution of the doctor solution in Buffer Pool 16 is entered floation tank 18, in floation tank 18, the sulphur produced in sweetening process contained in doctor solution flotates with foam-like, and the sulphur foam floatingly selected is refined into commodity sulphur through sulfur melting kettle 20.
Flue gas through desulfurization process enters chimney through exhanst gas outlet passage 8.
Further, be improve desulfurized effect, described doctor solution is that the inner chamber spray thrower 7 of tower inner chamber 2 by being arranged on desulfurizing tower 30 is pumped to desulfurizing tower inner chamber, inner chamber spray thrower 7 is provided with shower nozzle doctor solution being dispersed into fine particle.
The preferred spiral nozzle of above-mentioned shower nozzle of the present embodiment.
For improving desulfurized effect, further comprising the steps of, doctor solution is pumped into gas approach passage 1, can install import spray thrower 3 for doctor solution is dispersed into fine particle in gas approach passage 1, spray thrower 3 is connected with desulfurization pipe 13 by desulfurization arm 14;
In described doctor solution, NaHS and the total concentration of vulcanized sodium are 5 ~ 10g/L.
In the present embodiment, in doctor solution, NaHS and the total concentration of vulcanized sodium are 6 ~ 8g/L.
The volume ratio of the described doctor solution and flue gas that pump into the tower inner chamber 2 of desulfurizing tower 30 is 1:1000 ~ 1:250.
The volume ratio of the doctor solution and flue gas that pump into the tower inner chamber 2 of desulfurizing tower 30 described in the present embodiment is 1:700 ~ 1:550.
For reducing the moisture content of flue gas after desulfurization, the moisture of the flue gas after desulfurization in demister removing flue gas, described demister is the rotational flow plate defroster 4 and the flap demister 6 that are arranged on tower inner chamber 2 top.
In the upper and lower both sides of flap demister 6, washer 5 is installed, washer 5 is connected on desulfurization pipe 13 by cleaning arm 15, cleaning arm 15 also can be connected with production waterpipe, time opening washer 5, flap demister 6 is cleaned, prevent in flue gas with flyash stick on flap demister 6.
NaHS in doctor solution in desulfurization pond 16 and vulcanized sodium are constantly consumed in flue gas desulfurization course, in order to keep NaHS in doctor solution and vulcanized sodium, storage tank 17 adds the concentrated solution of NaHS and vulcanized sodium continuously in desulfurization pond, makes the NaHS in doctor solution and vulcanized sodium remain on the concentration range of setting.
The sulphur foam that floation tank 18 floatingly selects is introduced in sulphur foam cell 19 and stores, and after the storage capacity of sulphur foam reaches the volume of regulation in sulphur foam cell 19, then sulphur foam feeding sulfur melting kettle 20 is refined into sulphur,
The present invention is while carrying out desulfurization to boiler smoke, also processed containing NaHS and sodium sulfide solution simultaneously, adopt the present invention can transform on the basis of existing boiler flue gas desulfurization equipment, without the need to building new desulphurization plant, employing removes the sulfur dioxide in boiler smoke containing NaHS and sodium sulfide solution, also can save a large amount of desulfurization water, reduce flue gas desulfurization cost, reach with the effect of dirty pollution treatment, there is great social benefit.
Claims (6)
1. a method for comprehensive regulation boiler smoke, is characterized in that comprising the steps:
Step 1, with desulfur pump, the doctor solution containing NaHS and vulcanized sodium in desulfurization pond is pumped into the tower inner chamber of desulfurizing tower;
Step 2, in the tower inner chamber of desulfurizing tower, the sulfur dioxide in flue gas and the NaHS in doctor solution and vulcanized sodium react, and reacted doctor solution falls into desulfurizing tower bottom, then flow in Buffer Pool through gray water outlet;
The upper solution of the doctor solution in step 3, Buffer Pool flows into desulfurization pond;
Further comprising the steps of:
Lower floor's solution of the doctor solution in Buffer Pool is entered floation tank, and in floation tank, the sulphur produced in sweetening process contained in doctor solution flotates with foam-like, and the sulphur foam floatingly selected is refined into commodity sulphur through sulfur melting kettle.
2. the method for comprehensive regulation boiler smoke according to claim 1, is characterized in that: described doctor solution is that the inner chamber spray thrower of tower inner chamber by being arranged on desulfurizing tower is pumped to tower inner chamber.
3. the method for comprehensive regulation boiler smoke according to claim 1, is characterized in that: further comprising the steps of, doctor solution is pumped into gas approach passage.
4. the method for comprehensive regulation boiler smoke described in any one according to claims 1 to 3, is characterized in that: NaHS contained in described doctor solution and the total concentration of vulcanized sodium are 5 ~ 10g/L.
5. the method for comprehensive regulation boiler smoke described in any one according to claims 1 to 3, is characterized in that: described in pump into the tower inner chamber of desulfurizing tower the volume ratio of doctor solution and flue gas be 1:1000 ~ 1:250.
6. the method for comprehensive regulation boiler smoke described in any one according to claims 1 to 3, is characterized in that: further comprising the steps of, the moisture of the flue gas after desulfurization in demister removing flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410547651.2A CN105561760A (en) | 2014-10-16 | 2014-10-16 | Comprehensive treatment method for boiler smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410547651.2A CN105561760A (en) | 2014-10-16 | 2014-10-16 | Comprehensive treatment method for boiler smoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105561760A true CN105561760A (en) | 2016-05-11 |
Family
ID=55872722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410547651.2A Pending CN105561760A (en) | 2014-10-16 | 2014-10-16 | Comprehensive treatment method for boiler smoke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105561760A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111097273A (en) * | 2018-10-26 | 2020-05-05 | 中国石油化工股份有限公司 | Method and device for treating FCC (fluid catalytic cracking) regenerated flue gas |
-
2014
- 2014-10-16 CN CN201410547651.2A patent/CN105561760A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111097273A (en) * | 2018-10-26 | 2020-05-05 | 中国石油化工股份有限公司 | Method and device for treating FCC (fluid catalytic cracking) regenerated flue gas |
| CN111097273B (en) * | 2018-10-26 | 2022-02-08 | 中国石油化工股份有限公司 | Method and device for treating FCC (fluid catalytic cracking) regenerated flue gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205700119U (en) | A kind of efficient desulfurizing tower | |
| CN103933845B (en) | A kind of system for the treatment of boats and ships discharging waste gas | |
| CN101597529A (en) | Methane bio-desulfurization device | |
| CN201912877U (en) | System for processing medical waste incineration tail gas containing high concentration hydrogen chloride | |
| CN105664693A (en) | Sulfuric acid tail gas desulphurization apparatus by oxidation process and usage method thereof | |
| CN206381832U (en) | Integral biological desulfurizer | |
| CN104119946B (en) | A kind of catalytic cracking flue gas desulfurization and Acidic Gas Treating technique | |
| CN209501361U (en) | Novel energy-conserving Complexing Iron desulphurization plant | |
| CN201978664U (en) | Double-tower ammonia process desulphurization device | |
| CN106398790A (en) | A hydrogen sulfide removing device and method for natural gas | |
| CN203737096U (en) | Treatment device for diffused gas in coking gas purification area | |
| CN204147756U (en) | A kind of device of comprehensive regulation boiler smoke | |
| CN203155083U (en) | In-tower pH value regionally-differentiated wet desulfurization device | |
| CN202881200U (en) | Desulfurizing device for gas of finery | |
| CN105561760A (en) | Comprehensive treatment method for boiler smoke | |
| CN204111709U (en) | Methane bio-desulfurization system | |
| CN202070285U (en) | Device for removing sulfur dioxides in sulphuric acid industrial tail gas and recovering sulphuric acid | |
| CN103691294A (en) | Device and technology for wet-type double-alkali method-based desulphurization and dedusting | |
| CN201669053U (en) | Desulfurizing device with gas fume washing component | |
| CN204320059U (en) | A kind of for combining the device that the sulfur-containing tail gas degree of depth reduces discharging | |
| CN206262343U (en) | Circulation desulfurization system | |
| CN207002657U (en) | A kind of biogas production wet desulphurization elemental sulfur filters equipment integrating | |
| CN202762296U (en) | Double-alkali dust removal desulfurization device | |
| CN206199001U (en) | A kind of desulfurizer | |
| CN205095635U (en) | Can realize sea water desulphurization unit of ultra -clean emission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160511 |