CN204661625U - A kind of gas cleaning system and gasification system - Google Patents
A kind of gas cleaning system and gasification system Download PDFInfo
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- CN204661625U CN204661625U CN201520291278.9U CN201520291278U CN204661625U CN 204661625 U CN204661625 U CN 204661625U CN 201520291278 U CN201520291278 U CN 201520291278U CN 204661625 U CN204661625 U CN 204661625U
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Abstract
The utility model relates to gasification field, particularly relates to a kind of gas cleaning system and gasification system, can improve the heat transfer effect of interchanger when carrying out indirect condensing to raw gas, and then improves operation continuity and the stability of system indirect condensing.Overcome the organic wastewater amount that in prior art, direct condensation produces large, environmental stress is large, and coal-tar middle oil the sticking on described interchanger of indirect condensing process causes heat transfer effect poor, the defect of system cloud gray model continuity and poor stability.The utility model embodiment provides a kind of gas cleaning system, comprising: condenser system and washing unit, and described condenser system comprises at least one-level condensing unit; Described at least one-level condensing unit comprises the first condenser in parallel and the second condenser; Described first condenser and described second condenser are used for carrying out alternately condensation to the raw gas through described one-level condensing unit, and described first condenser and the second condenser that described washing unit is used for stopping condensation clean.
Description
Technical field
The utility model relates to gasification field, particularly relates to a kind of gas cleaning system and gasification system.
Background technology
In various coal gasification process, wherein, pyrolysis of coal, gasification and gelatin liquefaction are several coal gasifying process the most conventional, containing a large amount of dust, tar and water vapour in the raw gas that coal produces through pyrolysis, gasification or liquefaction, need when coal gas is applied to downstream process to carry out purifying treatment to described raw gas.
Existing gas purification treatment process mainly comprises direct condensation and indirect condensing two kinds of gas purification process, direct condensation refers to removes tar and water vapour by directly carrying out washing after raw gas dedusting, and indirect condensing refers to and first for raw gas dedusting is removed tar removing and water vapour by interchanger again; Can produce a large amount of organic wastewater containing tar by washing in direct condensation process, cause environmental stress, the cost increasing wastewater treatment drops into, and is unfavorable for economic benefit; Compared with direct condensation, indirect condensing adopts the tar in interchanger removal raw gas, the organic wastewater amount that directly washing produces can be reduced, but, in indirect condensing process, can stick on the condensing coil of described interchanger after tar in raw gas is condensed, affect the heat transfer effect of interchanger, and tar have corrosive nature to condensing coil.
Utility model content
Main purpose of the present utility model is, provides a kind of gas cleaning system and gasification system, can improve the heat transfer effect of interchanger when carrying out indirect condensing to raw gas, and then improves operation continuity and the stability of system indirect condensing.
For achieving the above object, the utility model adopts following technical scheme:
On the one hand, the utility model embodiment provides a kind of gas cleaning system, comprising: condenser system and washing unit, and described condenser system is used for carrying out condensation to be separated tar in described raw gas and coal gas to raw gas;
Described condenser system comprises at least one-level condensing unit;
Described at least one-level condensing unit comprises the first condenser in parallel and the second condenser;
Described first condenser is communicated with described washing unit respectively with described second condenser;
Described first condenser and described second condenser are used for carrying out alternately condensation to the raw gas through described one-level condensing unit, described first condenser is to after the raw gas of described one-level condensing unit stops condensation, described second condenser carries out condensation to the raw gas through described one-level condensing unit, and described washing unit is used for stopping described first condenser of condensation provide clean-out system and clean it.
Preferably, the import of described first condenser and outlet are respectively arranged with the first imported valve and the first outlet valve, the import of described second condenser and outlet are respectively arranged with the second imported valve and the second outlet valve, the pipeline that described washing unit is communicated with described first condenser is provided with the 3rd valve, the pipeline that described washing unit is communicated with the second condenser is provided with the 4th valve.
Preferably, described condenser system comprises condensed in two stages unit, is respectively one-level condensing unit and the B-grade condensation unit with described one-level condensing unit serial communication;
The outlet of described one-level condensing unit and the import of described B-grade condensation unit are by the first pipeline communication; Described B-grade condensation unit is used for proceeding condensation to through condensed first gaseous product of described one-level condensing unit;
Described B-grade condensation unit comprises the 3rd condenser in parallel and the 4th condenser;
3rd condenser is communicated with described washing unit respectively with the 4th condenser;
Described 3rd condenser and described 4th condenser are used for carrying out alternately condensation through described B-grade condensation unit first gaseous product, described 3rd condenser is to after the first gaseous product of described B-grade condensation unit stops condensation, described 4th condenser carries out condensation to the first gaseous product through described B-grade condensation unit, and described washing unit is used for stopping described 3rd condenser of condensation provide clean-out system and clean it.
Preferred further, the import of described 3rd condenser and outlet are respectively arranged with the 5th imported valve and the 5th outlet valve, the import of described 4th condenser and outlet are respectively arranged with the 6th imported valve and the 6th outlet valve, the pipeline that described washing unit is communicated with described 3rd condenser is provided with the 7th valve, the pipeline that described washing unit is communicated with the 4th condenser is provided with the 8th valve.
Optionally, the outlet of described first condenser 3 and the second condenser is interconnected, and the import of described 3rd condenser and the 4th condenser is interconnected, and the outlet of described one-level condensing unit and the import of described B-grade condensation unit are by the first pipeline communication; Described first pipeline is communicated with the first storage tank by the 3rd pipeline, described first storage tank is used for collecting through the condensed first liquid product of described one-level condensing unit, the outlet of described B-grade condensation unit is connected with second pipe, described second pipe is used for exporting through condensed second gaseous product of described B-grade condensation unit, described second pipe is communicated with the second storage tank by the 4th pipeline, and described second storage tank is used for collecting through the condensed second liquid product of described B-grade condensation unit.
Optionally, described first pipeline is provided with the first temperature detector in the outlet of described one-level condensing unit, for detecting the temperature out of described one-level condensing unit, described second pipe is provided with the second temperature detector near the exit of described B-grade condensation unit, for detecting the temperature out of described B-grade condensation unit.
Preferably, described system also comprises control unit;
Described control unit respectively with described one-level condensing unit, B-grade condensation unit and washing unit electrical connection, for controlling described one-level condensing unit and B-grade condensation unit and washing unit, the first condenser in described one-level condensing unit and the second condenser is made to carry out alternately condensation to the raw gas through described one-level condensing unit, and control described washing unit and provide clean-out system to clean to stopping described first condenser of condensation and the second condenser, and make the 3rd condenser in described B-grade condensation unit and the 4th condenser carry out alternately condensation to the first gaseous product through described B-grade condensation unit, and control described washing unit and provide clean-out system to clean to stopping described 3rd condenser of condensation and the 4th condenser.
Preferred further, described control unit also connects with described first temperature detector and the second temperature detector electrical respectively, is respectively used to obtain the temperature out of described one-level condensing unit and the temperature out of described B-grade condensation unit.
Optionally, described system also comprises:
Dust removing units;
The outlet of described dust removing units and the inlet communication of described first condensing unit, described dust removing units is used for enter a large amount of dust removings in the raw gas of described dust removing units from reactor.
Preferably, described dust removing units comprises two fly-ash separators, and described two duster parallels are communicated with or parallel communication.
On the other hand, the utility model provides a kind of gasification system, comprising:
At least one vapourizing furnace;
Gas cleaning system as described above.
The utility model embodiment provides a kind of gas cleaning system and gasification system, by the first condenser and the second condenser that arrange parallel connection, alternately condensation is carried out to raw gas, make a condenser in described first condenser and the second condenser when carrying out condensation to raw gas, another condenser stops condensation, and, the condenser of described washing unit to described stopping condensation providing clean-out system to clean, described first condenser and the second condenser can be reduced alternately condensed tar adhesive capacity is carried out to raw gas, improve described first condenser and the heat transfer effect of the second condenser in condensation process, improve continuity and the stability of system cloud gray model.Overcoming coal-tar middle oil the sticking on described interchanger of prior art indirect condensing process causes heat transfer effect poor, the defect of system cloud gray model continuity and poor stability.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of gas cleaning system that Fig. 1 provides for the utility model embodiment;
The another kind of gas cleaning system that Fig. 2 provides for the utility model embodiment;
The another kind of gas cleaning system that Fig. 3 provides for the utility model embodiment;
The another kind of gas cleaning system that Fig. 4 provides for the utility model embodiment;
The another kind of gas cleaning system that Fig. 5 provides for the utility model embodiment;
The another kind of gas cleaning system that Fig. 6 provides for the utility model embodiment;
A kind of gasification system that Fig. 7 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In description of the present utility model, it will be appreciated that, term " " center ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship are for based on the orientation described in accompanying drawing or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
On the one hand, see Fig. 1, be a kind of gas cleaning system 100 that the utility model embodiment provides, comprise: condenser system 1 and washing unit 2, described condenser system 1 is for carrying out condensation to be separated tar in described raw gas and coal gas to raw gas;
Described condenser system 1 comprises at least one-level condensing unit A;
Described at least one-level condensing unit A comprises the first condenser 3 and the second condenser 4 in parallel;
Described first condenser 3 is communicated with described washing unit 2 respectively with described second condenser 4;
Described first condenser 3 and described second condenser 4 are for carrying out alternately condensation to the raw gas through described one-level condensing unit A, described first condenser 3 is to after the raw gas of described one-level condensing unit A stops condensation, described second condenser 4 carries out condensation to the raw gas through described one-level condensing unit A, and described washing unit 2 is for providing clean-out system to described first condenser 3 of stopping condensation and clean it.
The utility model embodiment provides a kind of gas cleaning system, alternately condensation is carried out by the first condenser 3 and the second condenser 4 pairs of raw gass that arrange parallel connection, make a condenser in described first condenser 3 and the second condenser 4 when carrying out condensation to raw gas, another condenser stops condensation, and, the condenser of described washing unit to described stopping condensation providing clean-out system to clean, described first condenser 3 and the second condenser 4 pairs of raw gass can be reduced and carry out alternately condensed tar adhesive capacity, improve described first condenser 3 and the heat transfer effect of the second condenser 4 in condensation process, improve continuity and the stability of system cloud gray model.Overcoming coal-tar middle oil the sticking on described interchanger of prior art indirect condensing process causes heat transfer effect poor, the defect of system cloud gray model continuity and poor stability.
Wherein, described first condenser 3 is not limited with the parallel way of described second condenser 4, such as, parallel way shown in Figure 1 can be adopted, namely the import of the first condenser 3 and the import of the second condenser 4 are interconnected, the outlet of the first condenser 3 and the outlet of the second condenser 4 are interconnected, and also can adopt parallel way shown in Figure 2, and namely described first condenser 3 and described second condenser 4 are independently structure.
Also do not limit with the structure of described second condenser 4 described first condenser 3, can be identical structure, also can be different structures.
The mode that described first condenser 3 and described second condenser 4 are communicated with described washing unit 2 respectively is not also limited, such as, mode of communicating shown in Figure 1 can be adopted, namely described washing unit 2 is communicated with the second condenser 4 with described first condenser 3 respectively by a pipe branch, also can adopt mode of communicating shown in Figure 2, namely described washing unit by two independently pipeline be communicated with the second condenser 4 with described first condenser 3 respectively.
In order to realize described first condenser 3 and the alternately condensation of described second condenser 4 to the raw gas through described first condensation cleaning unit, and described washing unit is to stopping the first condenser 3 of condensation or the cleaning of the second condenser 4, preferably, the import of described first condenser 3 and outlet are respectively arranged with the first imported valve 31 and the first outlet valve 32, the import of described second condenser 4 and outlet are respectively arranged with the second imported valve 41 and the second outlet valve 42, the pipeline that described washing unit 2 is communicated with described first condenser 3 is provided with the 3rd valve 33, the pipeline that described washing unit 2 is communicated with the second condenser 4 is provided with the 4th valve 43.
The first condenser 3 pairs of raw gass are adopted to carry out condensation, second condenser 4 stops being condensed into example and is described, open the first imported valve 31 and the first outlet valve 32 of described first condenser 3, close the second imported valve 41 and the second outlet valve 42 of described second condenser 4, make raw gas through described first condenser 3, first condenser 3 carries out heat exchange condensation to described raw gas, at this moment, open described 4th valve 43, described washing unit 2 provides clean-out system to clean to described second condenser 4.
Wherein, the kind of described clean-out system is not limited, as long as make the tar that described first condenser 3 and the second condenser 4 adhere to can clean up under described clean-out system effect, such as, described clean-out system can be the good organic solvent of the oily solvability of focusing, also can be superheated vapour, superheated vapour liquid is in the saturated condition called saturated liquid, the steam of its correspondence is saturation steam, but be wet saturated steam at first, after the moisture in steam evaporates completely, be only dry saturated vapour.All vaporize when the water in wet saturated steam and namely become dry saturated vapour, now vapor temperature is still boiling temperature.Heating is continued to dry saturated vapour, vapor temperature is raised and exceedes boiling temperature, obtain superheated vapour.
In view of the characteristic of superheated vapour, superheated vapour can dissolve rapidly tar, makes tar be in a liquid state and drip, reach the object of cleaning, and, consider the environment friendly in operating process, preferably, described clean-out system to be temperature the be superheated vapour of 120-200 DEG C.
When being cleaned the tar sticked on the first condenser 3 or the second condenser 4 by superheated vapour, opening the time that described 3rd valve 33 or the 4th valve 43 introduce described superheated vapour is 1-24h, preferred 15-24h.
Described raw gas is being carried out in the process of condensation cleaning, in order to improve the tar entrainment of the coal gas finally obtained, the condenser system 1 that described condenser system 1 can be arranged for the temperature according to described raw gas, such as, the first condenser 3 in described condenser system 1 and the heat interchanging area of the second condenser 4 can set flexibly according to the temperature of condensation required for described raw gas, again such as, condensing agent in described first condenser 3 and the second condenser 4 can be water, liquid nitrogen etc., also can set flexibly according to the temperature of condensation required for described raw gas, do not limit at this, as long as the tar entrainment of the coal gas after purification can be reduced.
It should be noted that, tar in described raw gas is mainly divided into tar heavy oil and tar light oil, in order to simplify in subsequent operations oil separating operation of focusing, improve separation efficiency, can be separated further with tar light oil the tar heavy oil in described tar in the process of described raw gas being carried out to condensation, preferably, see Fig. 4, described condenser system 1 comprises condensed in two stages unit, is respectively one-level condensing unit A and the B-grade condensation unit B with described one-level condensing unit A serial communication;
Described B-grade condensation unit B is used for proceeding condensation to through condensed first gaseous product of described one-level condensing unit A;
Described B-grade condensation unit B comprises the 3rd condenser 5 in parallel and the 4th condenser 6;
3rd condenser 5 is communicated with described washing unit 2 respectively with the 4th condenser 6;
Described 3rd condenser 5 and described 4th condenser 6 are for carrying out alternately condensation to the first gaseous product through described B-grade condensation unit B, described 3rd condenser 5 is to after the first gaseous product of described B-grade condensation unit B stops condensation, described 4th condenser 6 carries out condensation to the first gaseous product through described B-grade condensation unit B, and described washing unit 2 is for providing clean-out system to described 3rd condenser 5 of stopping condensation and clean it.
Described 3rd condenser 5 is not limited with the parallel way of described 4th condenser 6, can be the parallel way same with the parallel way of described first condenser 3 and the second condenser 4, not repeat them here.
Wherein, the serial communication mode of described one-level condensing unit A and B-grade condensation unit B is not limited, according to described first condenser 3 and two kinds of parallel waies of the second condenser 4, there are two kinds of different series systems, a kind of possible series system is, see Fig. 4, the outlet of described first condenser 3 and the second condenser 4 is interconnected, the import of described 3rd condenser 5 and the 4th condenser 6 is interconnected, described first condenser 3 and described second condenser 4 are independently structure as the first condensing unit A, described 3rd condenser 5 and described second condenser 6 are independently structure as the first condensing unit B, and, first condensing unit A and the second condensing unit B passes through pipeline communication, another kind of possible series system is, see Fig. 3, described first condenser 3 and described second condenser 4 are independently structure, the import of described 3rd condenser 5 and the outlet of described first condenser 3, the import of described 4th condenser 6 and the outlet of described second condenser 4.
In order to realize described 3rd condenser 5 and the alternately condensation of described 4th condenser 6 to the first gaseous product through described second condensation cleaning unit B, and described washing unit 2 is to stopping the 3rd condenser 5 of condensation or the cleaning of the 4th condenser 6, preferably, the import of described 3rd condenser 5 and outlet are respectively arranged with the 5th imported valve 51 and the 5th outlet valve 52, the import of described 4th condenser 6 and outlet are respectively arranged with the 6th imported valve 61 and the 6th outlet valve 62, the pipeline that described washing unit 2 is communicated with described 3rd condenser 5 is provided with the 7th valve 53, the pipeline that described washing unit 2 is communicated with the 4th condenser 6 is provided with the 8th valve 63.
By arranging B-grade condensation unit B, described raw gas is after described one-level condensing unit A condensation, generate first liquid product and the first gaseous product, described first gaseous product is condensed further through described B-grade condensation unit B, obtain second liquid product and the second gaseous product, like this, described tar can be separated into first liquid product and second liquid product according to the condensed temperature of described one-level condensing unit A and the condensed temperature of described B-grade condensation unit B.
In order to the first liquid product after separation and second liquid product collection are got up, preferably, see Fig. 4, the outlet of described first condenser 3 and the second condenser 4 is interconnected, the import of described 3rd condenser 5 and the 4th condenser 6 is interconnected, and the outlet of described one-level condensing unit A is communicated with by the first pipeline 7 with the import of described B-grade condensation unit B; Described first pipeline 7 is communicated with the first storage tank 9 by the 3rd pipeline 8, described first storage tank 9 is for collecting through the condensed first liquid product of described one-level condensing unit A, the outlet of described B-grade condensation unit B is connected with second pipe 10, described second pipe 10 is for exporting through condensed second gaseous product of described B-grade condensation unit B, described second pipe 10 is communicated with the second storage tank 12 by the 4th pipeline 11, and described second storage tank 12 is for collecting through the condensed second liquid product of described B-grade condensation unit B.
In order to tar heavy oil is separated with tar light oil, namely described first liquid product is tar heavy oil, second liquid product is tar light oil and water, simplify the later separation program to described tar heavy oil and tar light oil and water, preferably, the temperature out of described one-level condensing unit A is 280-320 DEG C, and the temperature out of described B-grade condensation unit B is less than 60 DEG C.
In order to carry out Real-Time Monitoring to the temperature out of described one-level condensing unit A and described B-grade condensation unit B, improve the separation efficiency of described tar heavy oil and tar light oil and water, preferably, described first pipeline 9 is provided with the first temperature detector 13 in the outlet of described one-level condensing unit A, for detecting the temperature out of described one-level condensing unit A, described second pipe 10 is provided with the second temperature detector 14 near the exit of described B-grade condensation unit B, for detecting the temperature out of described B-grade condensation unit B.
In order to improve the automatic operating ability of described system, preferably, see Fig. 5, described system also comprises control unit 15;
Described control unit 15 is electrically connected with above-mentioned valve described in each respectively, for controlling described one-level condensing unit A and B-grade condensation unit B and washing unit 2, the first condenser 3 in described one-level condensing unit A and the second condenser 4 is made to carry out alternately condensation to the raw gas through described one-level condensing unit A, and control described washing unit 2 and provide clean-out system to clean to stopping described first condenser 3 of condensation and the second condenser 4, and make the 3rd condenser 5 in described B-grade condensation unit 12 and the 4th condenser 6 carry out alternately condensation to the first gaseous product through described B-grade condensation unit B, and control described washing unit 2 and provide clean-out system to clean to stopping described 3rd condenser 5 of condensation and the 4th condenser 6.
Preferred further, described control unit 15 is also electrically connected with described first temperature detector 13 and the second temperature detector 14 respectively, is respectively used to obtain the temperature out of described one-level condensing unit A and the temperature out of described B-grade condensation unit B.
By arranging described control unit 15, raw gas is being carried out in the process of condensation, opened by the terminal valve of control unit 15 by the terminal valve of described first condenser 3 and described 3rd condenser 5, at this moment, raw gas is through described first condenser 3, described first condenser 3 carries out condensation to described raw gas, obtain tar heavy oil and the first gaseous product, part tar heavy oil is collected in described first storage tank 9, part tar heavy oil sticks on the condensing coil of described first condenser 3, described first gaseous product is through described 3rd condenser 5, described 3rd condenser 5 carries out condensation to described first gaseous product, obtain tar light oil and water and the second gaseous product, described part tar light oil and water are collected in described second storage tank 12, part tar light oil sticks on the condensing coil of described 3rd condenser 5, along with the continuous operation of system, when the temperature out of the described first condensing unit A that described first temperature detector 13 detects is greater than 320 DEG C, by described control unit 15, described first imported valve 31 and the first outlet valve 32 are closed, and described second imported valve 41 and the second outlet valve 42 are opened, described raw gas is through described second condenser 4, described second condenser 4 carries out condensation to described raw gas, and described 3rd valve 33 is opened by described control unit 15 simultaneously, described washing unit 2 provides clean-out system to clean to described first condenser 3, after having cleaned, the first outlet valve 32 is opened, the tar heavy oil drippage be in a liquid state also is collected into rapidly in described first storage tank 9, same, when the temperature out of the described second condensing unit B that described second temperature detector 8 detects is greater than 60 DEG C, by control unit 15, described 3rd condenser 5 is controlled with described 4th condenser 6, described control method is with similar to the control method of described first condenser 3 and the second condenser 4, do not repeat them here.
Also it should be noted that, in described raw gas except tar, also containing a large amount of dust, carrying out raw gas purifying in the process of the coal gas after obtaining purification, need the dust removing in described raw gas, to obtain the higher coal gas of purity, preferably, see Fig. 6, described system also comprises:
Dust removing units C;
The outlet of described dust removing units C and the inlet communication of described first condensing unit A, described dust removing units C is used for enter a large amount of dust removings in the raw gas of described dust removing units C from reactor.
Wherein, do not limit described dust removing units C, preferably, described dust removing units C comprises two fly-ash separators 16, described two fly-ash separator 16 serial communication or parallel communication.
Dust in described raw gas can be removed as much as possible by arranging two fly-ash separators, improving the degree of cleaning of the coal gas after final obtained purification.
On the other hand, see Fig. 7, the utility model embodiment provides a kind of gasification system, comprising:
At least one vapourizing furnace 200;
Gas cleaning system 100 as described above.
The utility model embodiment provides a kind of gasification system, alternately condensation is carried out by the first condenser 3 and the second condenser 4 pairs of raw gass that arrange parallel connection, make a condenser in described first condenser 3 and the second condenser 4 when carrying out condensation to raw gas, another condenser stops condensation, and, the condenser of described washing unit to described stopping condensation providing clean-out system to clean, described first condenser 3 and the second condenser 4 pairs of raw gass can be reduced and carry out alternately condensed tar adhesive capacity, improve described first condenser 3 and the heat transfer effect of the second condenser 4 in condensation process, improve continuity and the stability of system cloud gray model.Overcoming coal-tar middle oil the sticking on described interchanger of prior art indirect condensing process causes heat transfer effect poor, the defect of system cloud gray model continuity and poor stability.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (11)
1. a gas cleaning system, is characterized in that, comprising: condenser system and washing unit, and described condenser system is used for carrying out condensation to be separated tar in described raw gas and coal gas to raw gas;
Described condenser system comprises at least one-level condensing unit;
Described at least one-level condensing unit comprises the first condenser in parallel and the second condenser;
Described first condenser is communicated with described washing unit respectively with described second condenser;
Described first condenser and described second condenser are used for carrying out alternately condensation to the raw gas through described one-level condensing unit, described first condenser is to after the raw gas of described one-level condensing unit stops condensation, described second condenser carries out condensation to the raw gas through described one-level condensing unit, and described washing unit is used for stopping described first condenser of condensation provide clean-out system and clean it.
2. system according to claim 1, it is characterized in that, the import of described first condenser and outlet are respectively arranged with the first imported valve and the first outlet valve, the import of described second condenser and outlet are respectively arranged with the second imported valve and the second outlet valve, the pipeline that described washing unit is communicated with described first condenser is provided with the 3rd valve, the pipeline that described washing unit is communicated with the second condenser is provided with the 4th valve.
3. system according to claim 1 and 2, is characterized in that, described condenser system comprises condensed in two stages unit, is respectively one-level condensing unit and the B-grade condensation unit with described one-level condensing unit serial communication;
The outlet of described one-level condensing unit and the import of described B-grade condensation unit are by the first pipeline communication; Described B-grade condensation unit is used for proceeding condensation to through condensed first gaseous product of described one-level condensing unit;
Described B-grade condensation unit comprises the 3rd condenser in parallel and the 4th condenser;
3rd condenser is communicated with described washing unit respectively with the 4th condenser;
Described 3rd condenser and described 4th condenser are used for carrying out alternately condensation through described B-grade condensation unit first gaseous product, described 3rd condenser is to after the first gaseous product of described B-grade condensation unit stops condensation, described 4th condenser carries out condensation to the first gaseous product through described B-grade condensation unit, and described washing unit is used for stopping described 3rd condenser of condensation provide clean-out system and clean it.
4. system according to claim 3, it is characterized in that, the import of described 3rd condenser and outlet are respectively arranged with the 5th imported valve and the 5th outlet valve, the import of described 4th condenser and outlet are respectively arranged with the 6th imported valve and the 6th outlet valve, the pipeline that described washing unit is communicated with described 3rd condenser is provided with the 7th valve, the pipeline that described washing unit is communicated with the 4th condenser is provided with the 8th valve.
5. system according to claim 3, it is characterized in that, the outlet of described first condenser and the second condenser is interconnected, the import of described 3rd condenser and the 4th condenser is interconnected, and the outlet of described one-level condensing unit and the import of described B-grade condensation unit are by the first pipeline communication; Described first pipeline is communicated with the first storage tank by the 3rd pipeline, described first storage tank is used for collecting through the condensed first liquid product of described one-level condensing unit, the outlet of described B-grade condensation unit is connected with second pipe, described second pipe is used for exporting through condensed second gaseous product of described B-grade condensation unit, described second pipe is communicated with the second storage tank by the 4th pipeline, and described second storage tank is used for collecting through the condensed second liquid product of described B-grade condensation unit.
6. system according to claim 5, it is characterized in that, described first pipeline is provided with the first temperature detector in the outlet of described one-level condensing unit, for detecting the temperature out of described one-level condensing unit, described second pipe is provided with the second temperature detector near the exit of described B-grade condensation unit, for detecting the temperature out of described B-grade condensation unit.
7. system according to claim 6, is characterized in that, described system also comprises control unit;
Described control unit respectively with described one-level condensing unit, B-grade condensation unit and washing unit electrical connection, for controlling described one-level condensing unit and B-grade condensation unit and washing unit, the first condenser in described one-level condensing unit and the second condenser is made to carry out alternately condensation to the raw gas through described one-level condensing unit, and control described washing unit and provide clean-out system to clean to stopping described first condenser of condensation and the second condenser, and make the 3rd condenser in described B-grade condensation unit and the 4th condenser carry out alternately condensation to the first gaseous product through described B-grade condensation unit, and control described washing unit and provide clean-out system to clean to stopping described 3rd condenser of condensation and the 4th condenser.
8. system according to claim 7, it is characterized in that, described control unit also connects with described first temperature detector and the second temperature detector electrical respectively, is respectively used to obtain the temperature out of described one-level condensing unit and the temperature out of described B-grade condensation unit.
9. system according to claim 1, is characterized in that, described system also comprises:
Dust removing units;
The outlet of described dust removing units and the inlet communication of described first condensing unit, described dust removing units is used for enter a large amount of dust removings in the raw gas of described dust removing units from reactor.
10. system according to claim 9, is characterized in that, described dust removing units comprises two fly-ash separators, and described two duster parallels are communicated with or parallel communication.
11. 1 kinds of gasification systems, is characterized in that, comprising:
At least one vapourizing furnace;
Gas cleaning system as described in any one of claim 1-10.
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| CN201520291278.9U CN204661625U (en) | 2015-05-07 | 2015-05-07 | A kind of gas cleaning system and gasification system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884518A (en) * | 2017-12-07 | 2018-04-06 | 北京神雾电力科技有限公司 | Pyrolysis gas oxygen content detecting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884518A (en) * | 2017-12-07 | 2018-04-06 | 北京神雾电力科技有限公司 | Pyrolysis gas oxygen content detecting system |
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