CN210050573U - Tail chlorine recovery unit - Google Patents
Tail chlorine recovery unit Download PDFInfo
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- CN210050573U CN210050573U CN201920356636.8U CN201920356636U CN210050573U CN 210050573 U CN210050573 U CN 210050573U CN 201920356636 U CN201920356636 U CN 201920356636U CN 210050573 U CN210050573 U CN 210050573U
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- heating medium
- chlorine
- cylinder body
- tail
- circulating sleeve
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Abstract
A tail chlorine recovery device comprises a cylinder body and supporting legs for supporting the cylinder body, wherein an upper end enclosure is arranged at the top of the cylinder body, a lower end enclosure is arranged at the bottom of the cylinder body, a heating medium circulating sleeve is arranged outside the cylinder body, a heating interlayer is formed between a shell of the heating medium circulating sleeve and the cylinder body, a heating medium inlet and a heating medium outlet are respectively arranged on the heating medium circulating sleeve, and the heating medium outlet is higher than the heating medium inlet; the middle part of the cylinder body is provided with a tail chlorine discharge inlet and a cleaning manhole, and tail chlorine in chlorine equipment enters the cylinder body through the tail chlorine discharge outlet; the upper end cover is provided with a gas outlet, a negative pumping connector and a pressure gauge, the gas outlet is connected with a chlorine recovery system, the negative pumping connector is connected with a negative pumping device, and the pressure gauge is used for monitoring the gas pressure in the cylinder. Compared with the currently generally adopted method, the device can recover chlorine, avoid caustic soda consumption, reduce labor intensity and improve operation environment.
Description
Technical Field
The utility model belongs to the technical field of non-ferrous metal smelting process and equipment, in particular to a tail chlorine recovery device.
Background
Chlorine and liquid chlorine are one of important production raw materials of the titanium sponge full-flow production process, have toxicity, and can cause death after a small amount of leakage; and the liquid chlorine produced by the chlor-alkali plant has high content of nitrogen trichloride, is easy to be enriched in a liquid chlorine vaporizer, and is easy to explode under the conditions of impact and high temperature when the content of the nitrogen trichloride exceeds 60 ppm. In order to ensure the continuity, stability and safety of the titanium sponge whole-flow production, the chlorine equipment needs to regularly discharge sewage and clean tail chlorine. The common method in the chlor-alkali industry is to isolate the equipment in advance, pump the chlorine in the equipment to an alkali liquor absorption tank for neutralization by a negative pumping pipeline, prepare the by-product of sodium hypochlorite or calcium hypochlorite (bleaching powder), but the produced sodium hypochlorite and calcium hypochlorite are unstable and easy to decompose due to the high content of tail chlorine impurities discharged, thereby not only causing caustic soda waste, but also generating a large amount of waste water and influencing the environment; in addition, the existing method has the hidden troubles of long cleaning period, inadvisable chlorine equipment and system, easy leakage of chlorine and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses weak point to existence in the liquid chlorine blowdown mode of present adoption, preparation recovery unit is used for storing the tail chlorine in the chlorine equipment and handles the back to the tail chlorine and retrieve chlorine and continue to use to avoid the waste of chlorine leakage, caustic soda consumption, chlorine, reach simultaneously and reduce intensity of labour, improve the purpose of environment.
In order to solve the problems, the invention is realized by the following technical scheme:
a tail chlorine recovery device comprises a cylinder body and supporting legs for supporting the cylinder body, wherein an upper end enclosure is arranged at the top of the cylinder body, a lower end enclosure is arranged at the bottom of the cylinder body, a heating medium circulating sleeve is arranged outside the cylinder body, a heating interlayer is formed between a shell of the heating medium circulating sleeve and the cylinder body, a heating medium inlet and a heating medium outlet are respectively arranged on the heating medium circulating sleeve, and the heating medium outlet is higher than the heating medium inlet; the middle part of the cylinder body is provided with a tail chlorine discharge inlet and a cleaning manhole, and tail chlorine in chlorine equipment enters the cylinder body through the tail chlorine discharge outlet; the upper end cover is provided with a gas outlet, a negative pumping connector and a pressure gauge, the gas outlet is connected with a chlorine recovery system, the negative pumping connector is connected with a negative pumping device, and the pressure gauge is used for monitoring the gas pressure in the cylinder.
The bottom of the lower end enclosure is a cambered surface, and the lowest end of the lower end enclosure is provided with a slag discharge pipe.
The top of the upper sealing head is an arc surface, the upper sealing head is also provided with a safety relief valve, and the safety relief valve is connected with a chlorine recovery system.
The top end of the heating medium circulating sleeve is flush with the bottom end of the upper end enclosure, and the middle part of the cylinder body and the lower end enclosure are surrounded by the heating medium circulating sleeve.
The slag discharge pipe penetrates through the heating medium circulating sleeve.
The using method of the device comprises the following steps: the chlorine medium flows through the cylinder body, and the heating medium flows through the heating medium circulating sleeve outside the cylinder body. After tail chlorine in the chlorine equipment enters the cylinder through a tail chlorine discharge inlet after being pressurized, a heating medium valve is opened, and a heating medium with the temperature of 75-94 ℃ enters a heating medium circulating sleeve through a heating medium inlet and flows out from a heating medium outlet upwards, so that the tail chlorine in the cylinder is heated and vaporized; the vaporized chlorine and the nitrogen trichloride enter a chlorine recovery system in operation from a gas outlet, so that the recovery of the tail chlorine is realized. In the tail chlorine recovery process, the pressure in the cylinder is monitored by a pressure gauge, and the range of the pressure is controlled to be 0.05-0.1MPa greater than the pressure of a chlorine recovery system; when the pressure in the cylinder body is kept level with the pressure of the chlorine recovery system, indicating that the tail chlorine recovery is finished, closing the stop valve at the gas outlet position, and opening the negative pumping device and the negative pumping valve at the negative pumping interface position to perform negative pumping treatment on the cylinder body; when the pressure of the pressure gauge shows-0.05 MPa, the cleaning manhole can be opened, an operator enters the device to clean impurities in the cylinder, the cleaned impurities can be discharged through the slag discharge pipe at the bottom, then the cleaning manhole is closed, and the device can be recovered for standby.
The utility model discloses use chlorine production, application, compare with original tail chlorine and fully show its superiority, mainly show following several points:
1) the device realizes that the tail chlorine is recovered by 80 percent, the caustic soda consumption is reduced by 75 percent, and the material purchasing cost of 20 ten thousand yuan is saved every year.
2) When the device is used, zero chlorine leakage is realized on a working site, the labor intensity is reduced by 30 percent, and the working efficiency is improved by 75 percent.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
the labels in the figure are: 1. landing leg, 2, low head, 3, barrel, 4, heating intermediate layer, 5, heating medium circulation cover, 6, upper cover, 7, tail chlorine discharge entry, 8, slag pipe, 9, clearance manhole, 10, heating medium entry, 11, gas outlet, 12, safety relief valve, 13, manometer, 14, take out burden interface, 15, heating medium export.
Detailed Description
The technical solution of the present invention will be further explained by the following specific embodiments with reference to the accompanying drawings.
As shown in the figure, the tail chlorine recovery device is a cylindrical steel cylinder 3, the bottom of the cylinder 3 is supported by support legs 1, the top of the cylinder 3 is provided with an upper end enclosure 6, the bottom of the cylinder 3 is provided with a lower end enclosure 2, the top surface of the upper end enclosure 6 and the bottom surface of the lower end enclosure 2 are cambered surfaces, a heating medium circulating sleeve 5 is arranged outside the cylinder 3, a heating interlayer 4 is formed by the shell of the heating medium circulating sleeve 5 and the cylinder 3 in a surrounding mode, a heating medium inlet 10 and a heating medium outlet 15 are formed in the heating medium circulating sleeve 5, a heating medium enters the heating interlayer 4 and circulates in the heating interlayer 4 to heat tail chlorine entering the cylinder 3, and complete vaporization of liquid chlorine and nitrogen trichloride is guaranteed. The top of the heating medium circulating sleeve 5 is flush with the edge of the bottom of the upper end enclosure 6, namely the heating medium circulating sleeve 5 surrounds the middle part and the lower part of the cylinder 3. The height of the heating medium inlet 10 is lower than that of the heating medium outlet 15, so that the heating medium can better circulate in the heating interlayer 4, and vaporization of liquid chlorine and nitrogen trichloride in tail chlorine is facilitated. A tail chlorine discharge inlet 7 is arranged at the middle part of the cylinder 3 and close to the lower end enclosure 2, a gas outlet 11 and a corresponding gas outlet valve are arranged on the upper end enclosure 6, tail chlorine in chlorine equipment enters the cylinder 3 through the tail chlorine discharge inlet 7, and vaporized chlorine and nitrogen trichloride are discharged through the gas outlet 11 and enter a chlorine recovery system. The upper end enclosure 6 is also provided with a pressure gauge 13 for monitoring the air pressure in the cylinder 3, the upper end enclosure 6 is also provided with a safety pressure relief valve 12, when the pressure value in the cylinder 3 is greater than a safety set value, the safety pressure relief valve 12 is opened to discharge excessive gas, and the discharged gas enters a connected chlorine recovery system.
This device is using the back, need carry out artifical clearance, because the toxicity of chlorine, so will ensure not remain in barrel 3 before artifical clearance, consequently still be equipped with at head 6 and take out burden interface 14, take out burden interface 14 and link to each other through taking out the burden valve and taking out burden device, bleed to the negative pressure in the barrel 3, ensure that the clearance is gone on safely. Still be equipped with clearance manhole 9 on barrel 3, after taking out the burden, personnel can get into barrel 3 through clearance manhole 9 and clear up impurity, and the impurity of clearing up can be discharged through the scum pipe 8 of 2 bottoms of low head, and scum pipe 8 sets up the extreme lower position at low head 2.
The heating medium used in the device may be hot water at 75-94 ℃.
The device is experimentally applied in a certain chlorine production and use workshop section, and compared with the traditional method, the device fully shows the superiority. Tail chlorine discharged from the chlorine equipment is recycled into a barrel 3 of the tail chlorine recoverer by using transfer equipment under the pressure of nitrogen, when the liquid level in the barrel 3 is stored to 50% of the height of the barrel 3, a water outlet valve of a hot water tank is opened, and tail chlorine in the barrel 3 is heated by hot water in a low-in and high-out mode through a heating medium circulating sleeve 5 outside the barrel 3 so as to be vaporized. When the gas phase pressure in the cylinder 3 is larger than the pressure of the chlorine recovery system, the gas outlet valve at the upper part of the cylinder 3 is slowly opened, so that chlorine and nitrogen trichloride enter the chlorine recovery system in operation, and the recovery of tail chlorine is realized. During operation, a pressure gauge 13 at the top of the cylinder 3 is observed, when the pressure is kept level with the pressure of the chlorine recovery system, indicating that the tail chlorine recovery is finished, and a gas outlet valve and a hot water tank water outlet valve are closed; opening a negative pumping valve to perform negative pumping replacement treatment on the cylinder 3; when the pressure in the cylinder 3 shows-0.05 MPa, the cleaning manhole 9 is opened, the internal impurities are cleaned by an operator, then the cleaning manhole 9 is closed, the device can be recovered for standby, and the cleaned impurities can be discharged from the slag discharge pipe 8.
Claims (5)
1. The utility model provides a tail chlorine recovery unit, includes landing leg (1) of barrel (3) and support barrel (3), the top of barrel (3) is equipped with upper cover (6), the bottom is equipped with low head (2), its characterized in that: a heating medium circulating sleeve (5) is arranged outside the cylinder body (3), a heating interlayer (4) is formed between the shell of the heating medium circulating sleeve (5) and the cylinder body (3), a heating medium inlet (10) and a heating medium outlet (15) are respectively arranged on the heating medium circulating sleeve (5), and the heating medium outlet (15) is higher than the heating medium inlet (10); a tail chlorine discharge inlet (7) and a cleaning manhole (9) are arranged in the middle of the cylinder body (3), and tail chlorine in the chlorine equipment enters the cylinder body (3) through the tail chlorine discharge inlet (7); the upper end enclosure (6) is provided with a gas outlet (11), a negative pumping connector (14) and a pressure gauge (13), the gas outlet (11) is connected with a chlorine gas recovery system, the negative pumping connector (14) is connected with a negative pumping device, and the pressure gauge (13) is used for monitoring the gas pressure in the cylinder (3).
2. The tail chlorine recovery device according to claim 1, characterized in that: the bottom of the lower end enclosure (2) is a cambered surface, and the lowest end of the lower end enclosure is provided with a slag discharge pipe (8).
3. The tail chlorine recovery device according to claim 1, characterized in that: the top of the upper sealing head (6) is an arc surface, the upper sealing head (6) is further provided with a safety pressure relief valve (12), and the safety pressure relief valve (12) is connected with a chlorine recovery system.
4. The tail chlorine recovery device according to claim 1, characterized in that: the top end of the heating medium circulating sleeve (5) is flush with the bottom end of the upper end enclosure (6), and the heating medium circulating sleeve (5) surrounds the middle of the cylinder body (3) and the lower end enclosure (2).
5. The tail chlorine recovery device according to claim 2, characterized in that: the slag discharge pipe (8) penetrates through the heating medium circulating sleeve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920356636.8U CN210050573U (en) | 2019-03-20 | 2019-03-20 | Tail chlorine recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920356636.8U CN210050573U (en) | 2019-03-20 | 2019-03-20 | Tail chlorine recovery unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210050573U true CN210050573U (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920356636.8U Active CN210050573U (en) | 2019-03-20 | 2019-03-20 | Tail chlorine recovery unit |
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| CN (1) | CN210050573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944205A (en) * | 2021-03-12 | 2021-06-11 | 中国恩菲工程技术有限公司 | Chlorosilane filling system and chlorosilane filling method |
-
2019
- 2019-03-20 CN CN201920356636.8U patent/CN210050573U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944205A (en) * | 2021-03-12 | 2021-06-11 | 中国恩菲工程技术有限公司 | Chlorosilane filling system and chlorosilane filling method |
| CN112944205B (en) * | 2021-03-12 | 2023-03-14 | 中国恩菲工程技术有限公司 | Chlorosilane filling system and chlorosilane filling method |
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