CN211328933U - Hydrogen chloride tail gas washing wastewater circulating equipment - Google Patents
Hydrogen chloride tail gas washing wastewater circulating equipment Download PDFInfo
- Publication number
- CN211328933U CN211328933U CN201922019573.XU CN201922019573U CN211328933U CN 211328933 U CN211328933 U CN 211328933U CN 201922019573 U CN201922019573 U CN 201922019573U CN 211328933 U CN211328933 U CN 211328933U
- Authority
- CN
- China
- Prior art keywords
- tail gas
- washing
- washing liquid
- tower
- pipe
- 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.)
- Active
Links
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a synthetic field of hydrochloric acid especially relates to hydrogen chloride tail gas washing waste water circulating equipment, and hydrogen chloride tail gas washing waste water circulating equipment includes according to washing liquid waste water flow in proper order: the system comprises a tail gas washing tower, a washing liquid tank, a washing liquid circulating pump, a sodium hypochlorite generation tower and a sodium hypochlorite delivery pump; the tail gas washing tower is connected with the sodium hypochlorite generation tower through a washing liquid circulating pipe, the washing liquid circulating pipe is further provided with a first feeding pipe and a second feeding pipe, and the washing liquid circulating pipe is converged with the first feeding pipe, then converged with the second feeding pipe and finally flows into the sodium hypochlorite generation tower. By adopting the scheme of the utility model, the redesign of the pipe valve structure is utilized, so that the structure is simple, the reconstruction cost is low, and the existing equipment is fully utilized; the waste liquid of the tail gas washing tower is collected by the washing liquid tank in a unified way, is pumped and treated, enters the sodium hypochlorite generating tower, is reacted again, is environment-friendly and energy-saving, has no byproduct waste liquid, and reduces the production and maintenance cost.
Description
Technical Field
The utility model relates to a synthetic field of hydrochloric acid especially relates to hydrogen chloride tail gas washing waste water circulating equipment.
Background
When hydrochloric acid is industrially prepared, hydrogen is firstly ignited in a reactor, and then chlorine is introduced for reaction to prepare hydrogen chloride gas. The hydrogen chloride gas is cooled and absorbed by water to become hydrochloric acid. In the reaction process of the chlorine and the hydrogen, the toxic chlorine is surrounded by the excessive hydrogen, so that the chlorine is fully reacted, and the pollution to the air is prevented.
At present, hydrochloric acid storage tank gas and tail gas containing hydrogen chloride gas in China are washed by alkali or desalted water to remove the hydrogen chloride gas in the gas, so that the hydrogen chloride gas reaches the environmental-protection discharge standard, but the waste water generated after alkali washing is large in amount, so that the pollution discharge cost of enterprises is increased, and the desalted water is washed, so that part of the hydrogen chloride gas can be removed, the absorption effect is poor, the hydrogen chloride gas can not reach the standard to be discharged, the environmental-protection discharge accident is caused, and the enterprises are difficult to accept.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model aims to provide a hydrogen chloride tail gas washing waste water circulating equipment, its simple structure does not have secondary pollutant, and waste liquid cyclic utilization reduces production and maintenance cost.
The hydrogen chloride tail gas washing waste water circulating equipment sequentially comprises the following components in the flow direction of washing liquid waste water: the system comprises a tail gas washing tower, a washing liquid tank communicated with the tail gas washing tower, a washing liquid circulating pump communicated with the washing liquid tank, a sodium hypochlorite generating tower communicated with the washing liquid circulating pump and a sodium hypochlorite conveying pump communicated with the sodium hypochlorite generating tower;
the washing liquid circulating pump is connected with the sodium hypochlorite generating tower through a washing liquid circulating pipe, the liquid outlet end of the washing liquid circulating pipe is communicated with a first feeding pipe, and the liquid outlet end of the first feeding pipe is communicated with a second feeding pipe.
Preferably, the top of the tail gas washing tower is provided with an air pipe, and the air pipe is connected with a tail gas fan.
Preferably, the sodium hypochlorite generating tower is also provided with a pressure gauge and a temperature control device.
Preferably, a pH meter is further arranged in the washing liquid tank.
Preferably, pipeline heating sleeves are laid on the first feeding pipe and the second feeding pipe.
Preferably, the washing liquid circulating pipe is further provided with a check valve for placing waste liquid to flow backwards.
Preferably, a pressure stabilizing valve for stabilizing the pressure of the circulating pipe is further arranged on the washing liquid circulating pipe.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses in the implementation, contain a small amount of NaCl, Na2CO3, NaHCO3, NaOH, NaClO etc. in the washing solution, the sodium hypochlorite main component who produces in the sodium hypochlorite generation tower is exactly NaClO, NaCl, NaOH, contains trace Na2CO3, NaHCO3 simultaneously. In normal work, washing tower alkaline solution obtained after alkaline washing in the tail gas washing tower is primarily processed in a washing liquid tank, then is pumped into a washing liquid circulating pipe by a washing liquid circulating pump, is kept under pipe pressure by a pressure stabilizing valve, is prevented from flowing back by a check valve, is sequentially mixed with reagents in a first feeding pipe and a second feeding pipe, enters a sodium hypochlorite generating tower, generates no by-product after reaction in the tower, and is pumped to a finished product tank by a sodium hypochlorite conveying pump. By adopting the scheme of the utility model, the redesign of the pipe valve structure is utilized, so that the structure is simple, the reconstruction cost is low, and the existing equipment is fully utilized; the waste liquid of the tail gas washing tower is collected by the washing liquid tank in a unified way, is pumped and treated, enters the sodium hypochlorite generating tower, is reacted again, is environment-friendly and energy-saving, has no byproduct waste liquid, and reduces the production and maintenance cost.
Drawings
FIG. 1 is an overall schematic view of the hydrogen chloride tail gas washing wastewater recycling device of the present invention;
reference numerals: 1-tail gas washing tower, 2-washing liquid circulating pump, 3-washing liquid circulating pipe, 4-sodium hypochlorite generating tower, 5-sodium hypochlorite conveying pump, 6-tail gas blower, 7-washing liquid tank, 8-check valve, 9-pressure maintaining valve, 10-first feeding pipe and 11-second feeding pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1, the hydrogen chloride tail gas washing wastewater circulating equipment sequentially comprises the following components in the flow direction of washing liquid wastewater: the system comprises a tail gas washing tower 1, a washing liquid tank 7 communicated with the tail gas washing tower 1, a washing liquid circulating pump 2 communicated with the washing liquid tank 7, a sodium hypochlorite generating tower 4 communicated with the washing liquid circulating pump 2 and a sodium hypochlorite conveying pump 5 communicated with the sodium hypochlorite generating tower 4;
the washing liquid circulating pump 2 is connected with the sodium hypochlorite generating tower 4 through a washing liquid circulating pipe 3, the liquid outlet end of the washing liquid circulating pipe 3 is communicated with a first feeding pipe 10, and the liquid outlet end of the first feeding pipe 10 is communicated with a second feeding pipe 11;
preferably, the washing liquid circulating pipe is also provided with a check valve for placing waste liquid to flow backwards; preferably, a pressure stabilizing valve for stabilizing the pressure of the circulating pipe is further arranged on the washing liquid circulating pipe.
The utility model discloses in the implementation, contain a small amount of NaCl, Na2CO3, NaHCO3, NaOH, NaClO etc. in the washing solution, the sodium hypochlorite main component that produces in the sodium hypochlorite generation tower is just NaClO, NaCl, NaOH, contains trace Na2CO3, NaHCO3 simultaneously; in normal work, washing tower alkaline solution obtained after alkaline washing in the tail gas washing tower 1 is primarily processed in a washing liquid tank 7, then is pumped into a washing liquid circulating pipe 3 by a washing liquid circulating pump 2, pipe pressure is kept by a pressure stabilizing valve 9, a check valve 8 prevents backflow, and then is sequentially mixed with dilute alkali liquor in a first feeding pipe 10, mixed with sodium hydroxide in a second feeding pipe 11 and enters a sodium hypochlorite generating tower 4, no by-product is generated after reaction in the tower, and then is pumped into a finished product tank by a sodium hypochlorite conveying pump 5.
By adopting the scheme of the utility model, the redesign of the pipe valve structure is utilized, so that the structure is simple, the reconstruction cost is low, and the existing equipment is fully utilized; the waste liquid of the tail gas washing tower 1 is collected by a washing liquid tank in a unified way, is pumped and treated, enters the sodium hypochlorite generating tower 4, is reacted again, is environment-friendly and energy-saving, has no byproduct waste liquid, and reduces the production and maintenance cost.
Referring to fig. 1, preferably, an air pipe is arranged at the top of the tail gas washing tower 1, and the air pipe is connected with a tail gas fan 6; the utility model discloses, tuber pipe and tail gas fan 6 that 1 top of tail gas washing tower set up can discharge the tail gas that accords with the standard after purifying to the atmosphere, compare the natural emission, and efficiency is higher.
Preferably, a pressure gauge and a temperature control device are also arranged in the sodium hypochlorite generating tower 4; the pressure gauge arranged in the sodium hypochlorite generating tower 4 can detect whether the pressure interval meets the regulation in the generating process, so that the production efficiency is ensured; the temperature control device can ensure the reaction temperature to be at the optimum temperature.
Preferably, a PH meter is further disposed in the washing liquid tank 7; the collected washing liquid in the washing liquid tank sometimes needs pretreatment, and the PH meter can be arranged to effectively monitor whether the pretreatment is needed.
Preferably, pipeline heating sleeves are laid on the first feeding pipe 10 and the second feeding pipe 11; the solution in the first feeding pipe 10 and the second feeding pipe 11 both need certain temperature to reach the optimum reaction effect, and the stability of reaction temperature can be guaranteed by arranging the heating sleeve.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. Hydrogen chloride tail gas washing waste water circulating equipment, its characterized in that includes according to washing liquid waste water flow direction in proper order: the device comprises a tail gas washing tower (1), a washing liquid tank (7) communicated with the tail gas washing tower (1), a washing liquid circulating pump (2) communicated with the washing liquid tank (7), a sodium hypochlorite generating tower (4) communicated with the washing liquid circulating pump (2) and a sodium hypochlorite conveying pump (5) communicated with the sodium hypochlorite generating tower (4);
the washing liquid circulating pump (2) is connected with the sodium hypochlorite generating tower (4) through a washing liquid circulating pipe (3), the liquid outlet end of the washing liquid circulating pipe (3) is communicated with a first feeding pipe (10), and the liquid outlet end of the first feeding pipe (10) is communicated with a second feeding pipe (11).
2. The hydrogen chloride tail gas washing wastewater circulating equipment according to claim 1, wherein an air pipe is arranged at the top of the tail gas washing tower (1), and the air pipe is connected with a tail gas fan (6).
3. The hydrogen chloride tail gas washing wastewater circulating equipment as claimed in claim 1, wherein a pressure gauge and a temperature control device are further arranged in the sodium hypochlorite generating tower (4).
4. The recycling apparatus for waste water from hydrogen chloride tail gas washing according to claim 1, characterized in that a pH meter is disposed in the washing liquid tank (7).
5. The hydrogen chloride tail gas washing wastewater circulating equipment as claimed in claim 1, wherein the first feeding pipe (10) and the second feeding pipe (11) are both sleeved with pipeline heating sleeves.
6. The hydrogen chloride tail gas washing wastewater circulating equipment as claimed in claim 1, wherein the washing liquid circulating pipe (3) is further provided with a check valve (8) for placing waste liquid to flow backwards.
7. The hydrogen chloride tail gas washing wastewater circulating equipment is characterized in that a pressure stabilizing valve (9) for stabilizing the pressure of the circulating pipe is further arranged on the washing liquid circulating pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922019573.XU CN211328933U (en) | 2019-11-21 | 2019-11-21 | Hydrogen chloride tail gas washing wastewater circulating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922019573.XU CN211328933U (en) | 2019-11-21 | 2019-11-21 | Hydrogen chloride tail gas washing wastewater circulating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211328933U true CN211328933U (en) | 2020-08-25 |
Family
ID=72128489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922019573.XU Active CN211328933U (en) | 2019-11-21 | 2019-11-21 | Hydrogen chloride tail gas washing wastewater circulating equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211328933U (en) |
-
2019
- 2019-11-21 CN CN201922019573.XU patent/CN211328933U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101402024B (en) | Ozone supply apparatus | |
| CN201949783U (en) | Chlorine hydride tail gas absorber | |
| CN207958519U (en) | A kind of hypochlorite generator row hydrogen system | |
| CN112694165A (en) | Ozone catalytic oxidation reaction unit system | |
| CN202226657U (en) | Production system for preparing hydrochloric acid by absorbing hydrogen chloride | |
| CN202193613U (en) | Device for recycling dilute hydrochloric acid from tail gas containing hydrogen chloride gas | |
| CN203447970U (en) | Acid mist absorbing and recycling system | |
| CN211328933U (en) | Hydrogen chloride tail gas washing wastewater circulating equipment | |
| CN213433774U (en) | Organic tail gas purification system | |
| CN211612176U (en) | Hydrogen chloride tail gas absorbing device of by-product high concentration hydrochloric acid | |
| CN203264540U (en) | Destruction device containing phosgene tail gas | |
| CN203253340U (en) | Tail gas treating device for synthetic method chlorine dioxide preparation system | |
| CN204865499U (en) | Methyl nitrite's waste gas treatment system | |
| CN202061537U (en) | Tail gas treating device of chlorination furnace | |
| CN206566702U (en) | Natural gas hydrogen preparation pressure-variable adsorption tail gas and spent lye recycle device | |
| CN210356607U (en) | Synthetic acid mist absorption treatment device | |
| CN201990481U (en) | Concentration device for dilute hydrochloric acid | |
| CN201999732U (en) | Device for producing sodium hypochlorite | |
| CN210366984U (en) | System for tower continuous method production sodium hypochlorite | |
| CN212357397U (en) | Device for recovering chlorine gas by acid etching copper recovery system | |
| CN202876640U (en) | Tail gas recovery system of chlorine system of chlorlyhdrocarbon workshop | |
| CN209010214U (en) | A kind of PCB waste water and gas integrated form self-cleaning processing system | |
| CN209537636U (en) | A kind of gas emission device for acid copper reclaiming | |
| CN211799884U (en) | Production device of aluminum trichloride byproduct sodium hypochlorite | |
| CN101891153A (en) | Chlorine dioxide compound disinfectant generator and use method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |