Background technology
Utilize the equipment of adsorbent transformation separating mixed gas to comprise boost absorption and two processes of depressurization desorption.Its operation principle is: when a container (abbreviation adsorption tower) that adsorbent is housed is when boosting absorption aerogenesis, the regeneration of the depressurization desorption of another adsorption tower emptying simultaneously, utilize portioned product gas through adsorbent bed at depressurization desorption just, to adsorbent reactivation; So alternate cycles work, constantly output products gas.Wherein, Fig. 1 is shown in by process device structure schematic diagram.
As shown in Figure 1, pressure swing adsorption gas separation device of the prior art comprises: one first psa unit and one second psa unit.Described the first psa unit and described the second psa unit are by a filter set 6 ' be communicated with.
Described the first psa unit comprise one first adsorption tower 1 parallel with one another ' and one second adsorption tower 2 '.Described the first adsorption tower 1 ' top and described the second adsorption tower 2 ' top between be connected with first group of pneumatic operated valve parallel with one another and one first ball valve 17 ', described the first adsorption tower 1 ' bottom and described the second adsorption tower 2 ' bottom between be connected with the 4th group of pneumatic operated valve and the 5th group of pneumatic operated valve parallel with one another.
Described first group of pneumatic operated valve comprise one the 5th pneumatic operated valve 15 of mutual series connection ' and one the 6th pneumatic operated valve 16 ', described the 4th group of pneumatic operated valve comprise one the 3rd pneumatic operated valve 13 of mutual series connection ' and one the 4th pneumatic operated valve 14 ', described the 5th group of pneumatic operated valve comprise one first pneumatic operated valve 11 of mutual series connection ' and one second pneumatic operated valve 12 '.
One first emptying muffler 8 ' one end and one second ball valve 18 ' one end be all connected to described the first pneumatic operated valve 11 ' and described the second pneumatic operated valve 12 ' between; One unstripped gas 5 ' outlet be connected to described the 3rd pneumatic operated valve 13 ' and described the 4th pneumatic operated valve 14 ' between.
As shown in Figure 1, described the second psa unit comprise one the 3rd adsorption tower 3 ' and one the 4th adsorption tower 4 '.Described the 3rd adsorption tower 3 ' bottom and described the 4th adsorption tower 4 ' bottom between be connected with second group of pneumatic operated valve parallel with one another, one the 9th pneumatic operated valve 33 ' and the 3rd group of pneumatic operated valve, described the 3rd adsorption tower 3 ' top and described the 4th adsorption tower 4 ' top between be connected with the 6th group of pneumatic operated valve parallel with one another, first group of check-valves and 1 the 12 pneumatic operated valve 36 '.
Described second group of pneumatic operated valve comprise 1 the tenth pneumatic operated valve 34 of mutual series connection ' and 1 the 11 pneumatic operated valve 35 ', described the 3rd group of pneumatic operated valve comprise one the 7th pneumatic operated valve 31 of mutual series connection ' and one the 8th pneumatic operated valve 32 ', described the 7th pneumatic operated valve 31 of one second emptying muffler 9 ' be arranged at ' and described the 8th pneumatic operated valve 32 ' between.
Described the 6th group of pneumatic operated valve comprise 1 the 13 pneumatic operated valve 37 of mutual series connection ' and 1 the 14 pneumatic operated valve 38 ', described first group of check-valves comprise one first check-valves 39 of mutual series connection ' and one second check-valves 40 ', one first throttle valve 41 ' one end be connected to described the 13 pneumatic operated valve 37 ' and described the 14 pneumatic operated valve 38 ' between, described first throttle valve 41 ' the other end be connected to described the first check-valves 39 ' and described the second check-valves 40 ' between, one gas product 7 ' import be connected to described the 13 pneumatic operated valve 37 ' and described the 14 pneumatic operated valve 38 ' between.
Described filter set 6 ' import be connected to described the 5th pneumatic operated valve 15 ' and described the 6th pneumatic operated valve 16 ' between, described filter set 6 ' outlet be connected to described the tenth pneumatic operated valve 34 ' and described the 11 pneumatic operated valve 35 ' between.
Adopt adsorbent dependence self gas product of the pressure swing adsorption gas separation device of said structure certainly will produce following shortcoming to its purging regeneration:
1, cause the waste of gas product;
2, due to the feature such as self gas product dew point is low, cause adsorbent reactivation poor effect.
Utility model content
The technical problems to be solved in the utility model is in order to overcome in prior art the defects such as the large and adsorbent reactivation poor effect of pressure swing adsorption gas separation device gas product consumption, a kind of pressure swing adsorption gas separation device to be provided.
The utility model solves above-mentioned technical problem by following technical proposals:
A kind of pressure swing adsorption gas separation device, comprise, one first psa unit and one second psa unit, described the first psa unit is communicated with by a filter set with described the second psa unit, its feature is, described the first psa unit comprises one first adsorption tower parallel with one another and one second adsorption tower, between the top of the top of described the first adsorption tower and described the second adsorption tower, be connected with first group of pneumatic operated valve parallel with one another, first group of check-valves and one first ball valve, described first group of pneumatic operated valve comprises one the 5th pneumatic operated valve and one the 6th pneumatic operated valve of mutual series connection, described first group of check-valves comprises one the 3rd check-valves and one the 4th check-valves of mutual series connection,
On pipeline between described the 3rd check-valves and described the 4th check-valves, be also provided with a branch road, described branch road is communicated with an exhaust channel of described the second psa unit.
In this programme, between the top of the top of the first adsorption tower and the second adsorption tower, be connected with mutual one the 3rd check-valves of connecting and one the 4th check-valves, on pipeline between the 3rd check-valves and the 4th check-valves, be also provided with a branch road being communicated with an exhaust channel of the second psa unit, the gas that the second psa unit is discharged through exhaust channel is recycled again, make in its first adsorption tower or the second adsorption tower that enters the first psa unit, the first adsorption tower or the second adsorption tower are carried out to punching press or adsorbent reactivation, improve quality and the adsorbent reactivation effect of partial regeneration gas, thereby improve adsorbent absorption property, saved the consumption for the finished product gas of adsorbent reactivation simultaneously, reduce the consumption of unstripped gas, reduced user's production cost.
Preferably, described the second psa unit comprises one the 3rd adsorption tower and one the 4th adsorption tower, between the bottom of the bottom of described the 3rd adsorption tower and described the 4th adsorption tower, be connected with second group of pneumatic operated valve parallel with one another, one the 9th pneumatic operated valve and the 3rd group of pneumatic operated valve, described second group of pneumatic operated valve comprises 1 the tenth pneumatic operated valve and 1 the 11 pneumatic operated valve of mutual series connection, described the 3rd group of pneumatic operated valve comprises one the 7th pneumatic operated valve and one the 8th pneumatic operated valve of mutual series connection, and described exhaust channel is arranged between described the 7th pneumatic operated valve and described the 8th pneumatic operated valve.
In this programme, described exhaust channel is arranged between the 7th pneumatic operated valve and described the 8th pneumatic operated valve, makes the gas of the 3rd adsorption tower or the discharge of the 4th adsorption tower in drain passageway enters the first psa unit.
Preferably, on described exhaust channel, be connected with one second emptying muffler.
In this programme, adopt said structure, the portion gas that the second psa unit is discharged is effectively eliminated the noise in the situation that not affecting adsorbent reactivation effect through the second muffler.
Preferably, the import of described filter set is connected between described the 5th pneumatic operated valve and described the 6th pneumatic operated valve, and the outlet of described filter set is connected between described the tenth pneumatic operated valve and described the 11 pneumatic operated valve.
Preferably, between the bottom of the bottom of described the first adsorption tower and the second adsorption tower, be connected with one the 4th group of pneumatic operated valve and one the 5th group of pneumatic operated valve parallel with one another, described the 4th group of pneumatic operated valve comprises one the 3rd pneumatic operated valve and one the 4th pneumatic operated valve of mutual series connection, described the 5th group of pneumatic operated valve comprises one first pneumatic operated valve and one second pneumatic operated valve of mutual series connection, and one end of one end of one first emptying muffler and one second ball valve is all connected between described the first pneumatic operated valve and the second pneumatic operated valve.
Meeting on the basis of this area general knowledge, above-mentioned each optimum condition, can be combined, and obtains each preferred embodiments of the utility model.
Positive progressive effect of the present utility model is:
The utility model pressure swing adsorption gas separation device has improved the quality of partial regeneration gas, thereby adsorbent reactivation effect and adsorbent absorption property have been improved, save the finished product gas that purges regeneration simultaneously, reducing desorption drops a hint, the consumption that reduces unstripped gas, has reduced user's operation energy consumption and production cost.
The specific embodiment
Below in conjunction with accompanying drawing, provide the utility model preferred embodiment, to describe the technical solution of the utility model in detail.
As shown in Figure 2, the utility model pressure swing adsorption gas separation device comprises: one first psa unit and one second psa unit.Described the first psa unit is communicated with by a filter set 6 with the second psa unit.
The first psa unit comprises one first adsorption tower 1 parallel with one another and one second adsorption tower 2.Between the top of the top of described the first adsorption tower 1 and the second adsorption tower 2, be connected with first group of pneumatic operated valve parallel with one another, first group of check-valves and one first ball valve 17.
Wherein, described first group of pneumatic operated valve comprises one the 5th pneumatic operated valve 15 and one the 6th pneumatic operated valve 16 of mutual series connection; Described one group of check-valves comprises one the 3rd check-valves 19 and one the 4th check-valves 20 of mutual series connection, and, on the pipeline between described the 3rd check-valves 19 and the 4th check-valves 20, being also provided with a branch road, branch road is communicated with an exhaust channel of the second psa unit.
In the utility model, between the top of the top of the first adsorption tower 1 and the second adsorption tower 2, be connected with mutual one the 3rd check-valves 19 of connecting and one the 4th check-valves 20, on pipeline between the 3rd check-valves 19 and the 4th check-valves 20, be also provided with a branch road being communicated with an exhaust channel of the second psa unit, the gas that the second psa unit is discharged through exhaust channel is recycled again, make in its first adsorption tower 1 or the second adsorption tower 2 that enters the first psa unit, the first adsorption tower or the second adsorption tower are carried out to punching press or adsorbent reactivation, improve quality and the adsorbent reactivation effect of partial regeneration gas, thereby improve adsorbent absorption property, saved the consumption for the finished product gas of adsorbent reactivation simultaneously, reduce the consumption of unstripped gas, reduced user's production cost.
Between the bottom of the bottom of described the first adsorption tower 1 and the second adsorption tower 2, be connected with the 4th group of pneumatic operated valve and the 5th group of pneumatic operated valve parallel with one another.
Wherein, described the 4th group of pneumatic operated valve comprises one the 3rd pneumatic operated valve 13 and one the 4th pneumatic operated valve 14 of mutual series connection; Described the 5th group of pneumatic operated valve comprises one first pneumatic operated valve 11 and one second pneumatic operated valve 12 of mutual series connection.
In addition, one end of one end of one first emptying muffler 8 and one second ball valve 18 is all connected between the first pneumatic operated valve 11 and the second pneumatic operated valve 12; The outlet of one unstripped gas 5 is connected between the 3rd pneumatic operated valve 13 and the 4th pneumatic operated valve 14.
In addition, as shown in Figure 2, the second psa unit comprises one the 3rd adsorption tower 3 and one the 4th adsorption tower 4.Between the bottom of the bottom of described the 3rd adsorption tower 3 and the 4th adsorption tower 4, be connected with second group of pneumatic operated valve parallel with one another, one the 9th pneumatic operated valve 33 and the 3rd group of pneumatic operated valve.
Wherein, described second group of pneumatic operated valve comprises 1 the tenth pneumatic operated valve 34 and 1 the 11 pneumatic operated valve 35 of mutual series connection; Described the 3rd group of pneumatic operated valve comprises one the 7th pneumatic operated valve 31 and one the 8th pneumatic operated valve 32 of mutual series connection.
Further, between the top of the 3rd adsorption tower 3 and the top of described the 4th adsorption tower 4, be connected with the 6th group of pneumatic operated valve parallel with one another, second group of check-valves and 1 the 12 pneumatic operated valve 36.
Wherein, the 6th group of pneumatic operated valve comprises 1 the 13 pneumatic operated valve 37 and 1 the 14 pneumatic operated valve 38 of mutual series connection; Second group of check-valves comprises one first check-valves 39 and one second check-valves 40 of mutual series connection.
Further, one end of a first throttle valve 41 is connected between the 13 pneumatic operated valve 37 and the 14 pneumatic operated valve 38, and the other end of described first throttle valve 41 is connected between the first check-valves 39 and the second check-valves 40; The import of one gas product 7 is connected between the 13 pneumatic operated valve 37 and described the 14 pneumatic operated valve 38.
In addition, as shown in Figure 2, exhaust channel is arranged between described the 7th pneumatic operated valve 31 and the 8th pneumatic operated valve 32.Wherein, on exhaust channel, be connected with one second emptying muffler 9.
In addition, the import of filter set 6 is connected between described the 5th pneumatic operated valve 15 and described the 6th pneumatic operated valve 16, and the outlet of described filter set 6 is connected between the tenth pneumatic operated valve 34 and the 11 pneumatic operated valve 35.
More than be described as the structure of PSA Gas, concrete pneumatic operated valve opens, cuts out the programme-control by PLC, and actuation time, order are with reference to the time-scale of Fig. 3, Fig. 4.
Wherein, the first adsorption tower 1 and the second adsorption tower 2 alternate cycles work.Its concrete course of work is as follows:
As shown in Figure 2 and Figure 3, open the second pneumatic operated valve 12, the 3rd pneumatic operated valve 13, the 5th pneumatic operated valve 15, unstripped gas 5 enters pressure swing adsorption gas separation device, the first adsorption tower 1 work, and gas product is through the 5th pneumatic operated valve 15 input filter groups 6.The portion gas at the top of the first adsorption tower 1, by 17 pairs of interior adsorbent reactivations of the second adsorption tower 2 of the first ball valve, is discharged through the second pneumatic operated valve 12 and the first emptying muffler 8.In addition, the 3rd adsorption tower 3 in the second psa unit or the portion gas in the 4th adsorption tower 4 are through exhaust channel and 19 pairs of interior adsorbent reactivations of the second adsorption tower 2 of the 3rd check-valves.
After work accumulation 240s, the portion gas of closing the top of the second pneumatic operated valve 12, the first adsorption towers 1 passes through 17 pairs of the second adsorption tower 2 punching presses of the first ball valve.The 3rd adsorption tower 3 in the second psa unit or the portion gas in the 4th adsorption tower 4 through exhaust channel to the second adsorption tower 2 punching presses.The first adsorption tower 1 works on, and switches to the second adsorption tower 2 work after 120s.
Close the 3rd pneumatic operated valve 13, the 5th pneumatic operated valve 15, open the first pneumatic operated valve 11, the 4th pneumatic operated valve 14, the 6th pneumatic operated valve 16, the second adsorption tower 2 work simultaneously, gas product is through the 6th pneumatic operated valve 16 input filter groups 6.The portion gas at the top of the second adsorption tower 2, by 17 pairs of interior adsorbent reactivations of the first adsorption tower 1 of the first ball valve, is discharged through the first pneumatic operated valve 11 and the first emptying muffler 8.In addition, the 3rd adsorption tower 3 in the second psa unit or the portion gas in the 4th adsorption tower 4 are through exhaust channel and 20 pairs of interior adsorbent reactivations of the first adsorption tower 1 of the 4th check-valves.
After work accumulation 600s, the portion gas of closing the top of the first pneumatic operated valve 11, the second adsorption towers 2 passes through 17 pairs of the first adsorption tower 1 punching presses of the first ball valve.The 3rd adsorption tower 3 in the second psa unit or the portion gas in the 4th adsorption tower 4 through exhaust channel to the first adsorption tower 1 punching press.The second adsorption tower 2 works on, and switches to the first adsorption tower 1 work after 120s.
The first adsorption tower 1 and the second adsorption tower 2 alternations are once one-period, and switching time is set rear automatic control by PLC in above pneumatic operated valve action and control.
In the first adsorption tower 1 and the second adsorption tower 2 alternations, the 3rd adsorption tower 3 and the 4th also alternation of adsorption tower 4, specific works process is as described below.
As shown in Figure 2, Figure 4 shows, opening the 9th pneumatic operated valve the 33, the 12 pneumatic operated valve 36, the four adsorption towers 4 all presses to the 3rd adsorption tower 3.
After work accumulation 2s, close the 9th pneumatic operated valve the 33, the 12 pneumatic operated valve 36, open the 8th pneumatic operated valve 32, the tenth pneumatic operated valve the 34, the 13 pneumatic operated valve 37, the three adsorption tower 3 work simultaneously, gas product is through the 13 pneumatic operated valve 37 outputs.The portion gas at the top of the 3rd adsorption tower 3 is by first throttle valve 41 and 39 pairs of interior adsorbent reactivations of the 4th adsorption tower 4 of the first check-valves.The interior gas of the 4th adsorption tower 4 is discharged from the second emptying muffler 9 through the 8th pneumatic operated valve 32 parts simultaneously, and its another part flows in the first adsorption tower 1 or the second adsorption tower 2 in the first psa unit.
After work accumulation 59s, close the 8th pneumatic operated valve 32, the three adsorption tower 3 top section gases by first throttle valve 41 and 39 pairs of the 4th adsorption tower 4 punching presses of the first check-valves, the 3rd adsorption tower 3 works on, gas product, through the 13 pneumatic operated valve 37 outputs, switches to the 4th adsorption tower 4 work after 1s.
After work accumulation 60s, close the tenth pneumatic operated valve 34 and the 13 pneumatic operated valve 37, open the 9th pneumatic operated valve the 33, the 12 pneumatic operated valve 36, the three adsorption towers 3 simultaneously and all press to the 4th adsorption tower 4.
After work accumulation 62s, close the 9th pneumatic operated valve 33 and the 12 pneumatic operated valve 36, open the 7th pneumatic operated valve the 31, the 11 pneumatic operated valve 35 and the 14 pneumatic operated valve 38, the four adsorption tower 4 work simultaneously, gas product is through the 14 pneumatic operated valve 38 outputs.The portion gas at the top of the 4th adsorption tower 4 is by first throttle valve 41 and 40 pairs of interior adsorbent reactivations of the 3rd adsorption tower 3 of the second check-valves.The interior gas of the 3rd adsorption tower 3 is discharged from the second emptying muffler 9 through the 7th pneumatic operated valve 31 parts simultaneously, and its another part flows in the first adsorption tower 1 or the second adsorption tower 2 in the first psa unit.
After work accumulation 119s, close the 7th pneumatic operated valve 31, the portion gas at the top of the 4th adsorption tower 4 is by first throttle valve 41 and 40 pairs of the 3rd adsorption tower 3 punching presses of the second check-valves, the 4th adsorption tower 4 works on, gas product, through the 14 pneumatic operated valve 38 outputs, switches to the 3rd adsorption tower 3 work after 1s.
The 3rd adsorption tower 3 and the 4th adsorption tower 4 alternations are once one-period, and switching time is set rear automatic control by PLC in above pneumatic operated valve action and control.
The one-period of the first adsorption tower 1 and the second adsorption tower 2 alternations is 720s, and the working time of the first adsorption tower 1 and the second adsorption tower 2 is 360s; The one-period of the 3rd adsorption tower 3 and the 4th adsorption tower 4 alternations is 120s, and the working time of the 3rd adsorption tower 3 and the 4th adsorption tower 4 is 60s.When the first adsorption tower 1 work, the 3rd adsorption tower 3 and the 4th three cycles of adsorption tower 4 alternate cycles; When the second adsorption tower 2 work, the 3rd adsorption tower 3 and the 4th adsorption tower 4 be three cycles of alternate cycles also.
When the first adsorption tower 1, the 3rd adsorption tower 3 work, the interior gas of the 4th adsorption tower 4 is emptying through 32 minutes two-way ,Yi road the second mufflers 9 of the 8th pneumatic operated valve, 19 pairs of interior adsorbent reactivations of the second adsorption tower 2 of another Lu Jing tri-check-valves or to the second adsorption tower 2 punching presses.
When the first adsorption tower 1, the 4th adsorption tower 4 work, the interior gas of the 3rd adsorption tower 3 is emptying through 31 minutes two-way ,Yi road the second mufflers 9 of the 7th pneumatic operated valve, 19 pairs of interior adsorbent reactivations of the second adsorption tower 2 of another Lu Jing tri-check-valves or to the second adsorption tower 2 punching presses.
When the second adsorption tower 2, the 3rd adsorption tower 3 work, the interior gas of the 4th adsorption tower 4 is emptying through 32 minutes two-way ,Yi road the second mufflers 9 of the 8th pneumatic operated valve, 20 pairs of interior adsorbent reactivations of the first adsorption tower 1 of another Lu Jing tetra-check-valves or to the first adsorption tower 1 punching press.
When the second adsorption tower 2, the 4th adsorption tower 4 work, the interior gas of the 3rd adsorption tower 3 is emptying through 31 minutes two-way ,Yi road the second mufflers 9 of the 7th pneumatic operated valve, 20 pairs of interior adsorbent reactivations of the first adsorption tower 1 of another Lu Jing tetra-check-valves or to the first adsorption tower 1 punching press.
In the utility model, during on the first adsorption tower 1 or the second adsorption tower 2 punching press: in the situation that not affecting the 3rd adsorption tower 3 or the interior adsorbent desorption and regeneration of the 4th adsorption tower 4 effect, improve the quality of the gas product in the first adsorption tower 1 or the second adsorption tower 2 and reduced the tolerance of punching press while switching to this first adsorption tower 1 or the work of the second adsorption tower 2, improve adsorbent absorption property, reduced raw air consumption.
During to the first adsorption tower 1 or the second adsorption tower 2 interior adsorbent reactivation: the dew point through the dew point of the gas product of the first adsorption tower 1 and the second adsorption tower 2 lower than the gas product through the first adsorption tower 1, the second adsorption tower 2, the 3rd adsorption tower 3 and the 4th adsorption tower 4, make in the situation that not affecting the 3rd adsorption tower 3 or the interior adsorbent desorption and regeneration of the 4th adsorption tower 4 effect, improved adsorbent reactivation effect in adsorption tower, and reduced the consumption of the finished product gas for regenerating, improve adsorbent absorption property, reduced raw air consumption.
In sum, the utility model pressure swing adsorption gas separation device has improved the quality of partial regeneration gas, thereby adsorbent reactivation effect and adsorbent absorption property have been improved, save the finished product gas that purges regeneration simultaneously, reducing desorption drops a hint, the consumption that reduces unstripped gas, has reduced user's operation energy consumption and production cost.
Although more than described the specific embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection domain of the present utility model is limited by appended claims.Those skilled in the art is not deviating under the prerequisite of principle of the present utility model and essence, can make various changes or modifications to these embodiments, but these changes and modification all fall into protection domain of the present utility model.