A kind of carbonaceous molecular sieve performance high speed detectorTechnical field
The present invention relates to the detecting device field, be specifically related to a kind of carbonaceous molecular sieve performance high speed detector.
Background technology
In the prior art, the main performance index denitrification production rate of carbonaceous molecular sieve in pressure swing adsorption technique and product nitrogen concentration all detect by small-sized pressure-swing absorption apparatus usually, be to separate at the nitrogen oxygen that carry out on the basis of nitrogen, oxygen rate of diffusion difference (the nitrogen molecular rate of diffusion that the less oxygen molecule diameter group of diameter is big is fast) in the carbonaceous molecular sieve micropore, sense cycle is long, usually one-time detection needs about one hour, and detection efficiency is low.
Summary of the invention
At the deficiency that prior art exists, the object of the present invention is to provide a kind of simple in structure, sense cycle weak point, the carbonaceous molecular sieve performance high speed detector that detection efficiency is high.
For achieving the above object, the invention provides following technical scheme: a kind of carbonaceous molecular sieve performance high speed detector, comprise adsorption tube, described adsorption tube is respectively arranged with first connecting pipe and second connecting pipe in two ends up and down, described first connecting pipe is provided with first valve, described second connecting pipe is provided with second valve, be vertically installed with the 3rd connecting pipe on second connecting pipe between described second valve and the adsorption tube, described the 3rd connecting pipe connects pipe end near second and is provided with the 3rd valve, on the 3rd connecting pipe of described the 3rd valve with respect to the opposite side of second connecting pipe vacuum pump is installed successively, gasometer, the 4th valve and oxygen analyzer.
By adopting technique scheme, can carry out (in 5 minutes) pre-detection fast to product, sieving out the carbonaceous molecular sieve product with certain separating power further detects with small-sized PSA pressure-swing absorption apparatus again, the product that screens out the separating power difference then no longer further detects, and has improved the detection efficiency of product greatly.
The present invention further is set to: described vacuum pump, gasometer, the 4th valve and oxygen analyzer are communicated with the 3rd connecting pipe respectively.By this setting, structure of the present invention is simpler, and it is more reliable to work.
The present invention also further is set to: described first valve, second valve, the 3rd valve and the 4th valve are retaining valve.By this setting, the present invention is more convenient to operate, and it is more reliable to work.
The present invention also further is set to: described first connecting pipe, second connecting pipe are tightly connected with adsorption tube respectively.By this setting, the adsorption tube two ends connect reliable.
Advantage of the present invention is: the present invention is by arranging retaining valve respectively on the connecting pipe at adsorption tube two ends, and retaining valve, vacuum pump, gasometer, retaining valve and oxygen analyzer be installed successively on the connecting pipe of adsorption tube one side, product is carried out rapid previewing to be surveyed, can carry out (in 5 minutes) pre-detection fast to product, sieving out the carbonaceous molecular sieve product with certain separating power further detects with small-sized PSA pressure-swing absorption apparatus again, the product that screens out the separating power difference then no longer further detects, and has improved the detection efficiency of product greatly.
The invention will be further described below in conjunction with Figure of description and specific embodiment mode.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment
Referring to Fig. 1, a kind of carbonaceous molecular sieve performance high speed detector provided by the invention, comprise adsorption tube 1, described adsorption tube is respectively arranged with first connectingpipe 2 and second connectingpipe 3 in two ends about in the of 1, described first connectingpipe 2 is provided with first valve 4, described second connectingpipe 3 is provided withsecond valve 5, be vertically installed with the 3rd connecting pipe 6 on second connectingpipe 3 between describedsecond valve 5 and the adsorption tube 1, described the 3rd connecting pipe 6 is provided with the3rd valve 7 near second connecting pipe, 3 ends, on the 3rd connecting pipe 6 of described the3rd valve 7 with respect to the opposite side of second connectingpipe 3 vacuum pump 8 is installed successively,gasometer 9, the4th valve 10 and oxygen analyzer 11.
For making work of the present invention more reliable, as preferably, the described vacuum pump 8 of present embodiment,gasometer 9, the4th valve 10 and oxygen analyzer 11 are communicated with the 3rd connecting pipe 6 respectively.
Described first valve 4,second valve 5, the3rd valve 7 and the4th valve 10 are retaining valve.Described first connectingpipe 2, second connectingpipe 3 are tightly connected with adsorption tube 1 respectively.
Present embodiment feeds air the adsorption tube 1 of filling carbonaceous molecular sieve, after adsorptive separation is finished, measure volume and the oxygen concentration of mixed gas in the adsorption tube 1, because the rate of diffusion of oxygen in the carbonaceous molecular sieve micropore is greater than nitrogen, the micropore meeting preferential adsorption oxygen of carbonaceous molecular sieve, therefore the oxygen concentration of last mixed gas is than oxygen concentration of air height.The volume of mixed gas is subjected to the influence in the aperture of carbonaceous molecular sieve micropore, the aperture greatly then persorption to close the volume of gas big, the volume of the little mixed gas in aperture is little.
During practical application, carbonaceous molecular sieve is filled adsorption tube 1, the first valve 4 andsecond valve 5 is opened; Under the state of the 3rd valve closing, 25 ℃, one atmospheric pressure of bubbling air 1min(room temperature); First valve 4,second valve 5 and the4th valve 10 are closed, and the3rd valve 7 is opened, and after by vacuum pump 8 gas in the adsorption tube 1 being discharged, is pressed intogasometer 9 again, measures gas volume; The4th valve 10 is opened then, and the combination gas in thegasometer 9 is fed oxygen analyzer 11, detects the oxygen concentration of mixed gas.
Above-described embodiment is to specific descriptions of the present invention; only be used for the present invention is further specified; can not be interpreted as the restriction to protection domain of the present invention, the technician of this area makes some nonessential improvement and adjusts the present invention according to the content of foregoing invention and all falls within protection scope of the present invention.