CN103691253B - A kind of leading portion pretreatment unit about air-separating technology and method - Google Patents
A kind of leading portion pretreatment unit about air-separating technology and method Download PDFInfo
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Abstract
The present invention relates to air-treatment technical field, a kind of specifically leading portion pretreatment unit about air-separating technology and method, comprise air compressor machine, precooler, separator, purifier, ice chest, electric heater, PLC digital control module circuit, the input of air compressor machine connects valve V1 and valve V3 respectively by pipeline, the other end of valve V3 connects the input of separator, the output of the output of separator and two purifiers links together, the input of two purifiers is linked together by pipeline, the input channel of two purifiers is respectively equipped with the electric heater of ice chest and valve V4 control.The present invention compared with the existing technology, its advantage is: the loadings of adsorbent, the flow of regeneration gas in appropriate design purifier, and intelligence control system is set, automatically switch to when precooler fault without the running of precooler operating mode, ensure that empty sub-headend pretreatment system uninterruptedly runs well.
Description
[technical field]
The present invention relates to air-treatment technical field, specifically a kind of leading portion pretreatment unit about air-separating technology and method.
[background technology]
Being made up of following system of general air separation unit: air cleaning system, air compression system, air precooling system, Air purification systems, refrigeration system, heat-exchange system, air distillation system, air cleaning system, air compression system, air precooling system, Air purification systems entirety are called sky sub-headend pretreatment system, wherein air precooling system has two kinds of forms: nitrogen water precooling (being applicable to big-and-middle-sized sky divide) and handpiece Water Chilling Units (i.e. precooler, the sky being applicable to < 4000 divides).
Divide for small size air, the flow process general type of front-end preprocessor system is: air cleaner → air compressor machine → precooler → separator → purifier.In air except nitrogen, oxygen, also containing hydrocarbons etc. such as mechanical admixture, moisture, carbon dioxide, acetylene, the mechanical admixture in air is removed in the effect of air cleaner, the effect of precooler be realize air isotherm compression, increase isothermal efficiency, the portion of water removed in air, reduce air enter main heat exchanger temperature, make purification condition be operated in optimum state, according to this flow setting, the energy consumption of empty point pretreatment system is minimum.
General air compressor machine outlet air temperature is 40 degree, and precooler outlet air temperature is 5-10 degree, and water content in air reduces greatly than air compressor machine outlet water content, CO
2content remains unchanged.In purifier, adsorbent is housed, is generally loaded by activated alumina and 13X molecular sieve combination, the effect of activated alumina is moisture in absorbed air and small part CO
2, the effect of 13X molecular sieve is remaining most of CO in absorbed air
2.In empty sub-headend pretreatment process, precooler fault rate is higher, once precooler breaks down, whole air separation unit just can not run, otherwise can moisture be caused, carbon dioxide penetrates purifier and brings ice chest into, cause heat exchanger and rectifying column blocking, need immediately air separation unit entirety to be stopped, precooler is keeped in repair, could again drive to run after precooler keeps in repair, the operation stability of device is declined, even if tripping precooler runs (namely walking the bypass of precooler), because air compressor machine outlet air temperature is higher than precooler outlet temperature, air moisture content is higher, exceed the adsorption capacity of adsorbent in purifier, moisture can be caused, CO
2penetrate adsorbent, enter follow-up refrigeration, heat exchange and distillation system, also can cause heat exchanger and rectifying column blocking.
Application number be 201210168642.3 Chinese patent disclose a kind of pretreatment and variable-flow device of air compression system, this device is by Real-Time Monitoring each section of air themperature, force value, abundant raising compressor efficiency, realize the changeable flow adjustment of compressor and cooler blower fan, but when precooler fault is not considered in this invention, cause the problem of heat exchanger and rectifying column blocking.
[summary of the invention]
The object of the invention is the problem causing heat exchanger and rectifying column blocking when solving precooler fault, the energy consumption of empty sub-headend pretreatment system is reduced when ensureing precooler normal operation, ensure the stability that empty sub-headend pretreatment system runs simultaneously, namely when precooler breaks down, whole air separation unit is not needed to stop, a kind of leading portion pretreatment unit about air-separating technology that can process online faulty equipment and method.
To achieve these goals, a kind of leading portion pretreatment unit about air-separating technology is provided, comprise air compressor machine, precooler, separator, purifier, ice chest, electric heater, PLC digital control module circuit, the input of air compressor machine connects valve V1 and valve V3 respectively by pipeline, the other end of valve V3 connects the input of separator, the output of the output of separator and two purifiers links together, the input of two purifiers is linked together by pipeline, the input channel of two purifiers is respectively equipped with the electric heater of ice chest and valve V4 control, the other end of valve V1 connects precooler input, precooler output connects valve V2 one end, the valve V2 other end is connected to the pipeline of valve V3 to water from device input, the signal input part of PLC digital control module circuit connects the signal input part of precooler, PLC digital control module circuit exports control signal end and is provided with five tunnels, the first via connects the signal input part of electric heater, second tunnel connects the signal input part of valve V3, 3rd tunnel connects the signal input part of two purifiers, 4th tunnel connects the signal input part of valve V1, 5th tunnel connects the signal input part of valve V2, the adsorption time of purifier is changed by the operation of PLC digital control module control circui precooler and stop signal, valve V1, the size of valve V4, the throwing of electric heater has quantity minimum to reach the run well energy consumption of the pretreatment system making air compressor machine shunt of precooler, automatically switch to when precooler fault and operate without precooler operating mode, ensure that empty sub-headend pretreatment system uninterruptedly runs well, and can on-bne repair precooler, after having keeped in repair, automatically the running of precooler operating mode has been gone back to again.
Be provided with sorbing material in described purifier, described sorbing material is that activated alumina and 13X molecular sieve are formed.
A kind of method of the leading portion pretreatment unit about air-separating technology, calculate the loadings of adsorbent in purifier, the configuration quantity of electric heater and power, the flow of regeneration gas, and intelligence control system is set, utilize the operation of precooler and stop signal to change the adsorption time of purifier, valve V1 and V2, the size of valve V4, the quantity that comes into operation of electric heater, the energy consumption of empty point pretreatment system is made to reduce to reach constantly in precooler normal operation, automatically switch to when precooler fault and operate without precooler operating mode, ensure that empty sub-headend pretreatment system uninterruptedly runs well, and can on-bne repair precooler, after precooler has keeped in repair, automatically the running of precooler operating mode has been gone back to again,
A. the process check method of the loadings of purifier adsorbent activity aluminium oxide: when having a precooler operating mode, adsorption time is adjusted according to t1, and main design parameters is as follows: precooler outlet air pressure P1, precooler outlet air temperature T1, precooler rate of discharge Q1, adsorption time t1; Adjust according to t2 without adsorption time during precooler operating mode, main design parameters is as follows: air compressor machine outlet air pressure P2, air compressor machine outlet air temperature T2, air compressor machine rate of discharge Q2, adsorption time t2; Choose the loadings of both middle the greater as purifier activated alumina;
B. the process check method of the 13X molecular sieve loadings of purifier adsorbent: when having a precooler operating mode, adsorption time is adjusted according to t1, and main design parameters is as follows: precooler outlet air pressure P1, precooler outlet air temperature T1, precooler rate of discharge Q1, adsorption time t1;
C. regeneration gas flow, electric heater capacity computational methods: when having a precooler operating mode, adsorption time is adjusted according to t1, main design parameters is as follows: precooler outlet air pressure P1, precooler outlet air temperature T1, precooler rate of discharge Q1, adsorption time t1, obtaining regeneration gas flow is Q11, recovery time electric heater capacity is M1, electric heater capacity is divided into N1, and every part of power is M11; Adjust according to t2 without adsorption time during precooler operating mode, main design parameters is as follows: air compressor machine outlet air pressure P2, air compressor machine outlet air temperature T2, air compressor machine rate of discharge Q2, adsorption time t2, obtaining regeneration gas flow is Q21, electric heater capacity is M2, electric heater capacity is divided into N2, and every part of power is M11; Choose in N1 and N2 that the greater is as the configuration quantity of electric heater, the power of each electric heater is M11;
D. recovery time, cold blowing time, all press time, venting duration computational methods: when having a precooler operating mode, adsorption time is adjusted according to t1, main design parameters is as follows: precooler outlet air pressure P1, precooler outlet air temperature T1, precooler rate of discharge Q1, adsorption time t1, obtain recovery time t11, cold blowing time t12, all pressure time t13, venting duration t14; Adjust according to t2 without adsorption time during precooler operating mode, main design parameters is as follows: air compressor machine outlet air pressure P2, air compressor machine outlet air temperature T2, air compressor machine rate of discharge Q2, adsorption time t2, obtain recovery time t21, cold blowing time t22, all pressure time t23, venting duration t24;
Described method also comprises: when precooler is in normal operation, and purifier, according to adsorption time T1, recovery time t11, cold blowing time t12, all presses time t13, venting duration t14 to operate, and electric heater comes into operation N1 group, and regeneration gas flow-control is at Q11; When precooler breaks down parking, purifier is according to adsorption time T2, recovery time t21, cold blowing time t22, all pressure time t23, venting duration t24 operate, electric heater comes into operation N1 group, regeneration gas flow-control is at Q21, precooler import and export are each arranges valve V1, V2, and precooler arranges a bypass, bypass is arranged valve V3; Regeneration gas is arranged valve V4.
Described method is as follows:
Refrigeration Technique and electronic technology are combined, by PLC digital control module circuit, reduce the air themperature of precooler, the method comprises the following steps:
A.PLC digital control module has storage and calculation function, the input data of module are the operation/stop sign of precooler, output data are: purifier running time: one group of adsorption time T1, recovery time t11, cold blowing time t12, all press time t13, venting duration t14, another group is adsorption time T2, recovery time t21, cold blowing time t22, all press time t23, venting duration t24, the electric heater quantity one group that comes into operation is N1, another group is N2, valve V1, V2 and V3: one group, valve are valve V1 and V2 standard-sized sheet, valve V3 complete shut-down, another group is valve V1 and V2 complete shut-down, valve V3 standard-sized sheet, it is regeneration gas flow Q11 that valve V4 controls aperture data one group, another group is regeneration gas flow Q21,
B. precooler is in normal operation, then service data is inputed to PLC intelligent control module, control module is after calculating, export following data: purifier running time, comprise adsorption time T1, recovery time t11, cold blowing time t12, all press time t13, venting duration t14, electric heater comes into operation quantity N1, valve V1 and V2 and valve V3 data comprise valve V1, V2 standard-sized sheet, valve V3 complete shut-down, regeneration gas controls aperture data and comprises regeneration air stream amount Q11, this space-time sub-headend pretreatment running status is: valve V1 and V2 standard-sized sheet, valve V3 complete shut-down, precooler runs well, purifier is according to following program run, comprise adsorption time T1, recovery time t11, cold blowing time t12, all press time t13, venting duration t14, valve V4 by flow-control at Q11, the electric heater quantity that comes into operation is N1,
C. precooler is in dead ship condition or running and stops suddenly, comprise scram or manually stop, then parking data is inputed to PLC digital control module, control module is after calculating, export following data: purifier running time, comprise adsorption time T2, recovery time t21, cold blowing time t22, all press time t23, venting duration t24, electric heater comes into operation quantity N2, valve V1 and V2 and valve V3 switch data comprise valve V1 and V2 complete shut-down, valve V3 standard-sized sheet, regeneration gas controls aperture data and comprises regeneration air stream amount Q21, this space-time sub-headend pretreatment running status is: valve V1, V2 complete shut-down, valve V3 standard-sized sheet, precooler shut down condition, purifier is according to following program run, comprise adsorption time T2, recovery time t21, cold blowing time t22, all press time t23, venting duration t24, regeneration gas passes through valve V4 by flow-control at Q21, the electric heater quantity that comes into operation is N2.
Compared with the existing technology, its advantage is in the present invention:
1. the flow of the loadings of adsorbent, the configuration quantity of electric heater and power, regeneration gas in appropriate design purifier of the present invention, and PLC control system is set, it is convenient to control, and realizes man-machine interaction;
2. utilize the operation of precooler and stop signal to change adsorption time, precooler terminal valve door switch, the size of flow control valve of regeneration gas, the quantity that comes into operation of electric heater of purifier, be reduced in the energy consumption making empty point pretreatment system when precooler runs well;
3. can automatically switch to when precooler fault and operate without precooler operating mode, ensure that empty sub-headend pretreatment system uninterruptedly runs well, and can on-bne repair precooler, after precooler has keeped in repair, automatically go back to the running of precooler operating mode again, ensure the stability that empty sub-headend pretreatment system runs.
[accompanying drawing explanation]
Fig. 1 is system construction drawing of the present invention;
[detailed description of the invention]
Below in conjunction with accompanying drawing, the invention will be further described, and the structure of this device and principle are very clearly concerning the people of this specialty.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1
As shown in Figure 1, a kind of leading portion pretreatment unit about air-separating technology, comprise air compressor machine, precooler, separator, purifier, ice chest, electric heater, PLC digital control module circuit, the input of air compressor machine connects valve V1 and valve V3 respectively by pipeline, the other end of valve V3 connects the input of separator, the output of the output of separator and two purifiers links together, the input of two purifiers is linked together by pipeline, the input channel of two purifiers is respectively equipped with the electric heater of ice chest and valve V4 control, the other end of valve V1 connects precooler input, precooler output connects valve V2 one end, the valve V2 other end is connected to the pipeline of valve V3 to water from device input, the signal input part of PLC digital control module circuit connects the signal input part of precooler, PLC digital control module circuit exports control signal end and is provided with five tunnels, the first via connects the signal input part of electric heater, second tunnel connects the signal input part of valve V3, 3rd tunnel connects the signal input part of two purifiers, 4th tunnel connects the signal input part of valve V1, 5th tunnel connects the signal input part of valve V2, the adsorption time of purifier is changed by the operation of PLC digital control module control circui precooler and stop signal, valve V1, the size of valve V4, the throwing of electric heater has quantity minimum to reach the run well energy consumption of the pretreatment system making air compressor machine shunt of precooler, automatically switch to when precooler fault and operate without precooler operating mode, ensure that empty sub-headend pretreatment system uninterruptedly runs well, and can on-bne repair precooler, after having keeped in repair, automatically the running of precooler operating mode has been gone back to again, sorbing material is provided with in purifier, described sorbing material is that activated alumina and 13X molecular sieve are formed.
The present invention is applied in small size air and divides (sky of <4000 divides), namely uses handpiece Water Chilling Units (i.e. precooler, the sky being applicable to <4000 divides) as the air separation unit of air precooling system.
Embodiment 2
Calculate the loadings of adsorbent in purifier, the configuration quantity of electric heater and power, the flow of regeneration gas, and intelligence control system is set, utilize the operation of precooler and stop signal to change the adsorption time of purifier, precooler terminal valve door switch, the size of the flow control valve of regeneration gas, the quantity that comes into operation of electric heater, the energy consumption of empty point pretreatment system is made to reduce to reach constantly in precooler normal operation, automatically switch to when precooler fault and operate without precooler operating mode, ensure that empty sub-headend pretreatment system uninterruptedly runs well, and can on-bne repair precooler, after precooler has keeped in repair, automatically the running of precooler operating mode has been gone back to again,
1. the process check method of the loadings of purifier adsorbent activity aluminium oxide:
When having a precooler operating mode, adsorption time is adjusted according to t1, and main design parameters is as follows: precooler outlet air pressure P1, precooler outlet air temperature T1, precooler rate of discharge Q1, adsorption time t1;
Adjust according to t2 without adsorption time during precooler operating mode, main design parameters is as follows: air compressor machine outlet air pressure P2, air compressor machine outlet air temperature T2, air compressor machine rate of discharge Q2, adsorption time t2; Choose the loadings of both middle the greater as purifier activated alumina;
2. the process check method of the 13X molecular sieve loadings of purifier adsorbent:
When having a precooler operating mode, adsorption time is adjusted according to t1, and main design parameters is as follows: precooler outlet air pressure P1, precooler outlet air temperature T1, precooler rate of discharge Q1, adsorption time t1;
3. regeneration gas flow, electric heater capacity computational methods:
When having a precooler operating mode, adsorption time is adjusted according to t1, main design parameters is as follows: precooler outlet air pressure P1, precooler outlet air temperature T1, precooler rate of discharge Q1, adsorption time t1, obtaining regeneration gas flow is Q11, recovery time electric heater capacity is M1, electric heater capacity is divided into N1, and every part of power is M11;
Adjust according to t2 without adsorption time during precooler operating mode, main design parameters is as follows: air compressor machine outlet air pressure P2, air compressor machine outlet air temperature T2, air compressor machine rate of discharge Q2, adsorption time t2, obtaining regeneration gas flow is Q21, electric heater capacity is M2, electric heater capacity is divided into N2, and every part of power is M11; Choose in N1 and N2 that the greater is as the configuration quantity of electric heater, the power of each electric heater is M11;
4. recovery time, cold blowing time, all press time, venting duration computing time:
When having a precooler operating mode, adsorption time is adjusted according to t1, main design parameters is as follows: precooler outlet air pressure P1, precooler outlet air temperature T1, precooler rate of discharge Q1, adsorption time t1, obtain recovery time t11, cold blowing time t12, all pressure time t13, venting duration t14;
Adjust according to t2 without adsorption time during precooler operating mode, main design parameters is as follows: air compressor machine outlet air pressure P2, air compressor machine outlet air temperature T2, air compressor machine rate of discharge Q2, adsorption time t2, obtain recovery time t21, cold blowing time t22, all pressure time t23, venting duration t24;
Embodiment 3
When precooler is in normal operation, purifier, according to adsorption time T1, recovery time t11, cold blowing time t12, all presses time t13, venting duration t14 to operate, and electric heater comes into operation N1 group, and regeneration gas flow-control is at Q11; When precooler breaks down parking, purifier is according to adsorption time T2, recovery time t21, cold blowing time t22, all pressure time t23, venting duration t24 operate, electric heater comes into operation N1 group, regeneration gas flow-control is at Q21, precooler import and export are each arranges valve V1, V2, and precooler arranges a bypass, bypass is arranged valve V3; Regeneration gas is arranged valve V4.
Embodiment 4
Refrigeration Technique and electronic technology are combined, by PLC digital control module circuit, reduce the air themperature of precooler, the method comprises the following steps:
A.PLC digital control module has storage and calculation function, the input data of module are the operation/stop sign of precooler, output data are: purifier running time: one group of adsorption time T1, recovery time t11, cold blowing time t12, all press time t13, venting duration t14, another group is adsorption time T2, recovery time t21, cold blowing time t22, all press time t23, venting duration t24, the electric heater quantity one group that comes into operation is N1, another group is N2, valve V1 and V2 and valve V3 switch data: one group is valve V1 and V2 standard-sized sheet, valve V3 complete shut-down, another group is valve V1 and V2 complete shut-down, valve V3 standard-sized sheet, it is regeneration gas flow Q11 that valve V4 controls aperture data one group, another group is regeneration gas flow Q21,
B. precooler is in normal operation, then service data is inputed to PLC intelligent control module, control module is after calculating, export following data: purifier running time, comprise adsorption time T1, recovery time t11, cold blowing time t12, all press time t13, venting duration t14, electric heater comes into operation quantity N1, valve V1 and V2 and valve switch V3 data comprise terminal valve V1, V2 standard-sized sheet, V3 complete shut-down, regeneration gas controls aperture data and comprises regeneration air stream amount Q11, this space-time sub-headend pretreatment running status is: valve V1 and V2 standard-sized sheet, valve V3 complete shut-down, precooler runs well, purifier is according to following program run, comprise adsorption time T1, recovery time t11, cold blowing time t12, all press time t13, venting duration t14, regeneration gas passes through valve V4 by flow-control at Q11, the electric heater quantity that comes into operation is N1,
C. precooler is in dead ship condition or running and stops suddenly, comprise scram or manually stop, then parking data is inputed to PLC digital control module, control module is after calculating, export following data: purifier running time, comprise adsorption time T2, recovery time t21, cold blowing time t22, all press time t23, venting duration t24, electric heater comes into operation quantity N2, valve V1 and V2 and valve V3 switch data comprise valve V1 and V2 complete shut-down, valve V3 standard-sized sheet, regeneration gas controls aperture data and comprises regeneration air stream amount Q21, this space-time sub-headend pretreatment running status is: valve V1, V2 complete shut-down, valve V3 standard-sized sheet, precooler shut down condition, purifier is according to following program run, comprise adsorption time T2, recovery time t21, cold blowing time t22, all press time t23, venting duration t24, regeneration gas by control valve by flow-control at Q21, the electric heater quantity that comes into operation is N2.
Claims (5)
1. the leading portion pretreatment unit about air-separating technology, comprise air compressor machine, precooler, separator, purifier, ice chest, electric heater, PLC digital control module circuit, it is characterized in that the input of described air compressor machine connects valve V1 and valve V3 respectively by pipeline, the other end of valve V3 connects the input of separator, the output of the output of separator and two purifiers links together, the input of two purifiers is linked together by pipeline, the input channel of two purifiers is respectively equipped with the electric heater of ice chest and valve V4 control, the other end of valve V1 connects precooler input, precooler output connects valve V2 one end, the valve V2 other end is connected to the pipeline of valve V3 to water from device input, the signal input part of PLC digital control module circuit connects the signal input part of precooler, PLC digital control module circuit exports control signal end and is provided with five tunnels, the first via connects the signal input part of electric heater, second tunnel connects the signal input part of valve V3, 3rd tunnel connects the signal input part of two purifiers, 4th tunnel connects the signal input part of valve V1, 5th tunnel connects the signal input part of valve V2, the adsorption time of purifier is changed by the operation of PLC digital control module control circui precooler and stop signal, valve V1, the size of valve V4, the throwing of electric heater has quantity minimum to reach the run well energy consumption of the pretreatment system making air compressor machine shunt of precooler, automatically switch to when precooler fault and operate without precooler operating mode, ensure that empty sub-headend pretreatment system uninterruptedly runs well, and can on-bne repair precooler, after having keeped in repair, automatically the running of precooler operating mode has been gone back to again.
2. a kind of leading portion pretreatment unit about air-separating technology as claimed in claim 1, is characterized in that being provided with sorbing material in described purifier, and described sorbing material is that activated alumina and 13X molecular sieve are formed.
3. the method about the leading portion pretreatment unit of air-separating technology, it is characterized in that the loadings calculating adsorbent in purifier, the configuration quantity of electric heater and power, the flow of regeneration gas, and intelligence control system is set, utilize the operation of precooler and stop signal to change the adsorption time of purifier, V1, V2 valve switch, the size of valve V4, the quantity that comes into operation of electric heater, when precooler runs well, the energy consumption of empty point pretreatment system is reduced to reach, automatically switch to when precooler fault and operate without precooler operating mode, ensure that empty sub-headend pretreatment system uninterruptedly runs well, and can on-bne repair precooler, after precooler has keeped in repair, automatically the running of precooler operating mode has been gone back to again,
A. the process check method of the loadings of purifier adsorbent activity aluminium oxide: when having a precooler operating mode, adsorption time is adjusted according to t1, and main design parameters is as follows: precooler outlet air pressure P1, precooler outlet air temperature T1, precooler rate of discharge Q1, adsorption time t1; Adjust according to t2 without adsorption time during precooler operating mode, main design parameters is as follows: air compressor machine outlet air pressure P2, air compressor machine outlet air temperature T2, air compressor machine rate of discharge Q2, adsorption time t2; Choose the loadings of both middle the greater as purifier activated alumina;
B. the process check method of the 13X molecular sieve loadings of purifier adsorbent: when having a precooler operating mode, adsorption time is adjusted according to t1, and main design parameters is as follows: precooler outlet air pressure P1, precooler outlet air temperature T1, precooler rate of discharge Q1, adsorption time t1;
C. regeneration gas flow, electric heater capacity computational methods: when having a precooler operating mode, adsorption time is adjusted according to t1, main design parameters is as follows: precooler outlet air pressure P1, precooler outlet air temperature T1, precooler rate of discharge Q1, adsorption time t1, obtaining regeneration gas flow is Q11, recovery time electric heater capacity is M1, electric heater capacity is divided into N1, and every part of power is M11; Adjust according to t2 without adsorption time during precooler operating mode, main design parameters is as follows: air compressor machine outlet air pressure P2, air compressor machine outlet air temperature T2, air compressor machine rate of discharge Q2, adsorption time t2, obtaining regeneration gas flow is Q21, electric heater capacity is M2, electric heater capacity is divided into N2, and every part of power is M11; Choose in N1 and N2 that the greater is as the configuration quantity of electric heater, the power of each electric heater is M11;
D. recovery time, cold blowing time, all press time, venting duration computing time: when having a precooler operating mode, adsorption time is adjusted according to t1, main design parameters is as follows: precooler outlet air pressure P1, precooler outlet air temperature T1, precooler rate of discharge Q1, adsorption time t1, obtain recovery time t11, cold blowing time t12, all pressure time t13, venting duration t14; Adjust according to t2 without adsorption time during precooler operating mode, main design parameters is as follows: air compressor machine outlet air pressure P2, air compressor machine outlet air temperature T2, air compressor machine rate of discharge Q2, adsorption time t2, obtain recovery time t21, cold blowing time t22, all pressure time t23, venting duration t24.
4. the method for a kind of leading portion pretreatment unit about air-separating technology as claimed in claim 3, is characterized in that described method also comprises:
When precooler is in normal operation, purifier, according to adsorption time T1, recovery time t11, cold blowing time t12, all presses time t13, venting duration t14 to operate, and electric heater comes into operation N1 group, and regeneration gas flow-control is at Q11; When precooler breaks down parking, purifier is according to adsorption time T2, recovery time t21, cold blowing time t22, all pressure time t23, venting duration t24 operate, electric heater comes into operation N1 group, regeneration gas flow-control is at Q21, precooler is imported and exported and is arranged valve V1, V2 respectively, and precooler arranges a bypass, bypass is arranged valve V3; Regeneration gas is arranged valve V4.
5. the method for a kind of leading portion pretreatment unit about air-separating technology as claimed in claim 3, is characterized in that described method is specific as follows:
Refrigeration Technique and electronic technology are combined, by PLC digital control module circuit, reduce the air themperature of precooler, the method comprises the following steps:
A.PLC digital control module has storage and calculation function, the input data of module are the operation/stop sign of precooler, output data are: purifier running time: one group of adsorption time T1, recovery time t11, cold blowing time t12, all press time t13, venting duration t14, another group is adsorption time T2, recovery time t21, cold blowing time t22, all press time t23, venting duration t24, the electric heater quantity one group that comes into operation is N1, another group is N2, valve V1, the switch data of V2 and V3: one group is valve V1 and V2 standard-sized sheet, valve V3 complete shut-down, another group is valve V1 and V2 complete shut-down, valve V3 standard-sized sheet, it is regeneration gas flow Q11 that valve V4 controls aperture data one group, another group is regeneration gas flow Q21,
B. precooler is in normal operation, then service data is inputed to PLC intelligent control module, control module is after calculating, export following data: purifier running time, comprise adsorption time T1, recovery time t11, cold blowing time t12, all press time t13, venting duration t14, electric heater comes into operation quantity N1, valve V1 and V2, valve V3 data comprise valve V1, V2 standard-sized sheet, valve V3 complete shut-down, regeneration gas controls aperture data and comprises regeneration air stream amount Q11, this space-time sub-headend pretreatment running status is: valve V1 and V2 standard-sized sheet, valve V3 complete shut-down, precooler runs well, purifier is according to following program run, comprise adsorption time T1, recovery time t11, cold blowing time t12, all press time t13, venting duration t14, valve V4 by flow-control at Q11, the electric heater quantity that comes into operation is N1,
C. precooler is in dead ship condition or running and stops suddenly, comprise scram or manually stop, then parking data is inputed to PLC digital control module, control module is after calculating, export following data: purifier running time, comprise adsorption time T2, recovery time t21, cold blowing time t22, all press time t23, venting duration t24, electric heater comes into operation quantity N2, valve V1 and V2 and valve V3 data comprise valve V1 and V2 complete shut-down, valve V3 standard-sized sheet, regeneration gas controls aperture data and comprises regeneration air stream amount Q21, this space-time sub-headend pretreatment running status is: valve V1, V2 complete shut-down, valve V3 standard-sized sheet, precooler shut down condition, purifier is according to following program run, comprise adsorption time T2, recovery time t21, cold blowing time t22, all press time t23, venting duration t24, regeneration gas passes through valve V4 by flow-control at Q21, the electric heater quantity that comes into operation is N2.
Priority Applications (1)
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Effective date of registration: 20191226 Address after: 233121 Fengyang County Industrial Park, Anhui, Chuzhou Patentee after: Anhui Afterburner Gas Co., Ltd. Address before: Pudong New Area town of Shanghai city in 201399 for Road No. 2 Patentee before: Shanghai Chinllenge Gases Co., Ltd. |
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