CN2581977Y - On-line measuring procedure gas-water content analyzer - Google Patents
On-line measuring procedure gas-water content analyzer Download PDFInfo
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- CN2581977Y CN2581977Y CN 02252149 CN02252149U CN2581977Y CN 2581977 Y CN2581977 Y CN 2581977Y CN 02252149 CN02252149 CN 02252149 CN 02252149 U CN02252149 U CN 02252149U CN 2581977 Y CN2581977 Y CN 2581977Y
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- tube
- water content
- cooling tube
- drying
- vacuum pump
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Abstract
The utility model relates to an on-line gas-water content measuring analyzer in the wet process of producing sulphuric acid, which mainly comprises a sampling tube, a cooling tube, a refrigeration device, a receiving tube, a drying tube, a vacuum pump and a flowmeter. The utility model is mainly characterized in that one end of the sampling tube is connected with one end of the cooling tube, and the other end of the sampling tube is connected with a device sampling port, and a three-way valve is arranged between the sampling tube and the cooling tube; one end of the receiving tube is connected with the cooling tube, and the other end of the receiving tube is connected with the drying tube; one end of the vacuum pump is connected with the drying tube, and the other end of the vacuum pump is connected with the flowmeter; the cooling tube and the receiving tube are arranged in the refrigeration device, and the inner part of the drying tube is provided with desiccants. The analyzer of the utility model measures the water content in gases in the process of producing sulphuric acid, the measured data are accurate, the measuring error is fewer, and therefore, the utility model can completely meet the requirements of production control.
Description
Technical field
The utility model relates to the analyser of liquid water content in a kind of measurement gas, relates to a kind of measurement wet method or rather and prepares sulfuric acid process air water analysis on Content instrument.
Background technology
At present, industrial preparation sulfuric acid mostly adopts traditional dry preparation process, is raw material with troilite or sulphur, makes industrial sulphuric acid through oxidation, water absorption under catalyst action.Because meeting water, catalyzer understands inactivation in this process engineering, so liquid water content in technological process in the necessary strict control procedure gas, therefore liquid water content is very low in the process gas, its measuring method adopts the agent of phosphorus pentoxide high-efficiency water-absorbing usually, and the weight and the sample tolerance that are increased by water absorbing agent calculate liquid water content in the process gas.And prepare in the method for sulfuric acid in wet method, adopting refinery's sulfur-bearing sour gas is raw material, liquid water content in the process gas has fundamental influence to the quality of sulfuric acid and the recovery of sulphur, be higher than 98% if guarantee sulfuric acid concentration, and effluxing tail gas sulphur oxide content compliance with environmental protection requirements, the liquid water content in the technological requirement process gas will be higher than 2 percentage points of sulfide contents at least.Obviously, it is too high that wet method prepares in the sulfuric acid process gas liquid water content, if adopt the liquid water content in the traditional measurement method measuring process gas, because the condensation meeting of water brings bigger analytical error.
Summary of the invention
The utility model is improved at the problem of shortcoming in the background technology and existence, provides that a kind of analytical error is little, simple in structure, adjustment on-line measurement wet method easily process of preparing sulfuric acid air water analysis on Content instrument.
The utility model mainly comprises sampling pipe, cooling tube, refrigerating plant, receiving tube, drying tube, vacuum pump and flowmeter by the following technical solutions; Be characterized in that sampling pipe one end is connected with cooling tube one end, the other end is connected with the device thief hatch: be provided with a T-valve between sampling pipe and the cooling tube; Receiving tube one end is connected with cooling tube, and the other end is connected with drying tube, and vacuum pump one end connects drying tube, other end connection traffic meter; Cooling tube and receiving tube are as in the refrigerating plant; Drying agent is housed in the drying tube;
The utility model analyser is measured the liquid water content in the sulfuric acid process gas, the data of surveying accurate, measuring error is little, can satisfy the production control requirement fully.
Description of drawings
Fig. 1 is an analyser structural principle synoptic diagram of the present utility model
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing
As shown in Figure 1, the 1st, sampling pipe, the 2nd, cooling tube, the 3rd, receiving tube, the 4th, drying tube, the 5th, vacuum pump, the 6th, flowmeter, the 7th, T-valve, the 8th, refrigerating plant.
As shown in Figure 1, the utility model mainly comprises sampling pipe 1, cooling tube 2, refrigerating plant 8, receiving tube 3, drying tube 4, vacuum pump 5 and flowmeter 6, be characterized in that sampling pipe 1 one ends are connected with cooling tube 2 one ends, the other end is connected with the device thief hatch, be provided with a T-valve 7 between sampling pipe 1 and the cooling tube 2, receiving tube 3 one ends are connected with cooling tube 2, the other end is connected with drying tube 4, vacuum pump 5 one ends connect drying tube 4, other end connection traffic meter 6, cooling tube 2 and receiving tube 3 are equipped with drying agent as in the refrigerating plant 8 in the drying tube 4.
Spiral helicine cooling tube 2 and receiving tube 3 devices immerse in the refrigerating plant 8, and keep ice-water bath submergence cooling tube 2 and receiving tube 3/4ths.Spiral fashion cooling tube 2 one ends are connected with sampling pipe 1, are provided with T-valve 7 between the two, and the other end is connected with receiving tube 3.Drying tube 4 one ends that discolour silica gel is housed connect receiving tube 3, and the other end connects vacuum pump 5; Vacuum pump 5 gas outlets connect a flowmeter 7.
Online wet method process of preparing sulfuric acid air water content analyzer of the present utility model is finished the principle and the method for monitoring task:
According to physical and chemical principle, when the steam dividing potential drop surpassed the saturated vapor pressure of this temperature in the gas at a certain temperature, water just can get off in condensation.The vapour pressure of water is 0.6Mpa in the time of 0 ℃, and residual moisture can absorb with drying agent in the gas.For this reason, process gas is cooled to 0 ℃, collects condensate water with receiving tube, residual water absorbs with drying agent in the gas, by the amount of measurement condensate water and the water yield and the gas volume of drying agent absorption, calculates liquid water content in the process.
According to above-mentioned principle, the specific implementation method is:
A, the refrigerating plant temperature is reduced to 0 ℃,
B, open T-valve, process gas enters in the system by sampling pipe, regulates T-valve pilot-gas flow velocity, keeps a period of time also to note down gas gross;
C, close T-valve, water in cooling tube, receiving tube, the sampling pipe is collected in the same graduated cylinder, read volume, take off drying tube simultaneously, measure suction back drying tube weight;
D, calculating liquid water content value.
Said process is opened T-valve after finishing once more, thereby realizes the process circulation of next cycle.Repeat the above-mentioned course of work so again and again, just can use this analysis view to detect in the wet method system sulfuric acid liquid water content value in the process gas periodically.
Adopt the analyser of this invention to measure liquid water content in the sulfuric acid process gas, the data of surveying accurate, measuring error is little, has satisfied the production control requirement.
Concrete operating process:
Open T-valve 7, process gas enters system, the adjustments of gas flow is 1～2ml, when gas gross reaches 300～500ml, close T-valve 7, unload cooling tube 2, sampling pipe 1 and receiving tube 3, drying tube 4, be respectively V1, V2, V3, weight W before the weighing drying tube absorbs respectively with balance with liquid water volume in graduated cylinder measurement cooling tube 2, sampling pipe 1 and the receiving tube 3
0With moisture drying tube weight W
1Utilize liquid water content value in formula (I) the computation process gas according to measurement result.
V=V1+V2+V3 wherein
K=(P
0-P
t) * 273/P
0* in (273+t) above-mentioned formula: V---the total value of condensate water volume, unit is a milliliter; V
0---sample volume, unit are milliliter; D---meter factor; K---the corresponding gas volume reduction coefficient of calculating according to temperature t and large barometer; P
0---standard atmospheric pressure, unit are kPa; P
t---the saturated vapor pressure under the test temperature, unit are kPa; T---test temperature, unit is ℃.
Claims (4)
1, a kind of on-line measurement process air water content analyzer, mainly comprise sampling pipe (1), cooling tube (2), refrigerating plant (8), receiving tube (3), drying tube (4), vacuum pump (5) and flowmeter (6), it is characterized in that sampling pipe (1) one end is connected with cooling tube (2) one ends, the other end is connected with the device thief hatch, be provided with a T-valve (7) between sampling pipe (1) and the cooling tube (2), receiving tube (3) one ends are connected with cooling tube (2), the other end is connected with drying tube (4), vacuum pump (5) one ends connect drying tube (4), other end connection traffic meter (6), cooling tube (2) and receiving tube (3) are as in the refrigerating plant (8), and drying tube is equipped with drying agent in (4).
2, on-line measurement process air water content analyzer according to claim 1 is characterized in that described refrigerating plant (8) is meant ice-water bath.
3, on-line measurement process air water content analyzer according to claim 1 and 2 is characterized in that described ice-water bath submergence cooling tube (2) and receiving tube (3) 3/4ths.
4, according to claim 1 or 3 described on-line measurement process air water content analyzers, it is characterized in that described cooling tube (2) coiling shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02252149 CN2581977Y (en) | 2002-08-24 | 2002-08-24 | On-line measuring procedure gas-water content analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02252149 CN2581977Y (en) | 2002-08-24 | 2002-08-24 | On-line measuring procedure gas-water content analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2581977Y true CN2581977Y (en) | 2003-10-22 |
Family
ID=33721744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02252149 Expired - Fee Related CN2581977Y (en) | 2002-08-24 | 2002-08-24 | On-line measuring procedure gas-water content analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2581977Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308343A (en) * | 2013-05-08 | 2013-09-18 | 中国平煤神马能源化工集团有限责任公司技术中心 | Multifunctional cooling sampling pipe |
| CN103674762A (en) * | 2013-12-20 | 2014-03-26 | 中国海洋石油总公司 | Portable gravimetry exhausted gas water measurer |
-
2002
- 2002-08-24 CN CN 02252149 patent/CN2581977Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308343A (en) * | 2013-05-08 | 2013-09-18 | 中国平煤神马能源化工集团有限责任公司技术中心 | Multifunctional cooling sampling pipe |
| CN103308343B (en) * | 2013-05-08 | 2016-06-22 | 中国平煤神马能源化工集团有限责任公司 | Multi-functional cooling sampling tube |
| CN103674762A (en) * | 2013-12-20 | 2014-03-26 | 中国海洋石油总公司 | Portable gravimetry exhausted gas water measurer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031022 Termination date: 20100824 |