CN202214331U

CN202214331U - Water injection and drainage device for electrical desalters

Info

Publication number: CN202214331U
Application number: CN2011203299924U
Authority: CN
Inventors: 李晓东; 卢飞; 马京云; 董立勇
Original assignee: SHANDONG CHANGYI PETROCHEMICAL CO Ltd
Current assignee: SHANDONG CHANGYI PETROCHEMICAL CO Ltd
Priority date: 2011-09-05
Filing date: 2011-09-05
Publication date: 2012-05-09
Anticipated expiration: 2021-09-05

Abstract

The utility model discloses a water injection and drainage device for electrical desalters, which comprises a primary electrical desalter, a secondary electrical desalter, a tertiary electrical desalter, a first water injection pump, an auxiliary water injection pump, a second water injection pump and a desalting water tank. A second water inlet pipe is mounted on the second water injection pump, a crude oil inlet pipe is connected onto the primary electrical desalter, a first oil pipe is communicated between the primary electrical desalter and the secondary electrical desalter, a second oil pipe is communicated between the secondary electrical desalter and the tertiary electrical desalter, a first drainage pipe, a second drainage pipe and a third drainage pipe are mounted on the primary electrical desalter, the secondary electrical desalter and the tertiary electrical desalter respectively, a first water inlet pipe and a first water outlet pipe are mounted on the first water injection pump, an auxiliary water inlet pipe and an auxiliary water outlet pipe are mounted on the auxiliary water injection pump, and a second water outlet pipe is mounted on the second water injection pump. The water injection and drainage device for the electrical desalters has the advantages of capabilities of making full use of desalted water and saving production cost.

Description

Electrical desalter is annotated, water-freeing arrangement

Technical field

The utility model relates to a kind of electrical desalter notes, water-freeing arrangement.

Background technology

Crude oil carries out deep processing after need carrying out the electric desalting processing again.For making desalting effect desirable; Crude oil is through three electric desalting now; Be that crude oil carries out desalting treatment three times through one-level electrical desalter, secondary electrical desalter and the three grades of electrical desalters that are connected in series successively, in three electrical desalters, inject de-mineralized water respectively, thereby realize technology of electric de-salting through waterflood pump.Existing notes, water-freeing arrangement comprise first waterflood pump and second waterflood pump; Promptly first waterflood pump is annotated de-mineralized water specially in the one-level electrical desalter; Second waterflood pump draws water in the desalination water pot and annotates de-mineralized water to secondary electrical desalter and three grades of electrical desalters respectively, and the draining of one-level electrical desalter and secondary electrical desalter drains into sewage work through interchanger, in draining re-injection to the first waterflood pump of three grades of electrical desalters; For preventing that the first waterflood pump generation emergency situations from influencing ordinary production; On first waterflood pump, be parallel with auxiliary waterflood pump, when first waterflood pump goes wrong, can annotate de-mineralized water for the one-level electrical desalter through auxiliary waterflood pump.Owing in the draining of secondary electrical desalter, also contain a large amount of de-mineralized waters of not participating in desalination process; Thereby it is directly drained into sewage work not only caused raw-material waste; Increase production cost, but also increased quantity of wastewater effluent, reduced the desalting efficiency of de-mineralized water.

The utility model content

The technical problem that the utility model will solve provides a kind of electrical desalter notes, water-freeing arrangement that makes full use of de-mineralized water and save production cost.

For solving the problems of the technologies described above; The electrical desalter that provided is annotated, water-freeing arrangement comprises the one-level electrical desalter, secondary electrical desalter, three grades of electrical desalters, first waterflood pump, auxiliary waterflood pump, second waterflood pump and desalination water pot; Second water inlet pipe with desalination water pot UNICOM is housed on second waterflood pump; Be connected with the crude oil inlet pipe on the one-level electrical desalter; Be linked with first oil pipe between one-level electrical desalter and the secondary electrical desalter; Be linked with second oil pipe between secondary electrical desalter and three grades of electrical desalters, first water shoot, second water shoot and the 3rd water shoot are housed respectively on one, two, three electrical desalter, first water inlet pipe with the 3rd water shoot UNICOM is housed on first waterflood pump; Its constructional feature is: first rising pipe with crude oil inlet pipe UNICOM is housed on first waterflood pump; Be equipped with on the auxiliary waterflood pump with the auxiliary water inlet pipe of the second water shoot UNICOM, with the auxiliary rising pipe of the first oil pipe UNICOM, second rising pipe with the second oil pipe UNICOM is housed on second waterflood pump, on second water inlet pipe, second rising pipe, first rising pipe, first water inlet pipe, auxiliary water inlet pipe and the auxiliary rising pipe valve is housed all.

After adopting said structure, the draining in the 3rd water shoot gets into first waterflood pump through first water inlet pipe, in the one-level electrical desalter, annotates de-mineralized water by first waterflood pump; Draining in second water shoot gets into auxiliary waterflood pump through auxiliary water inlet pipe, in the secondary electrical desalter, annotates de-mineralized water by auxiliary waterflood pump, and second waterflood pump draws water from the desalination water pot and in three grades of electrical desalters, annotates de-mineralized water; Thereby realize re-injection step by step; Reduce the consumption of de-mineralized water, made full use of the de-mineralized water of in the secondary electrical desalter, discharging and do not participate in electric desalting, reduced production cost; Reduce sewage discharge, improved the desalting efficiency of de-mineralized water.

In sum, the utlity model has and make full use of de-salted water, production cost saving.

Improvement as the utility model; First waterflood pump also is equipped with the first auxiliary waterexit pipe and the first secondary water inlet pipe, on the auxiliary waterflood pump the second auxiliary waterexit pipe and the second secondary water inlet pipe is housed, the first auxiliary waterexit pipe and auxiliary rising pipe UNICOM; The first secondary water inlet pipe and auxiliary water inlet pipe UNICOM; The second auxiliary waterexit pipe and the first rising pipe UNICOM, the second secondary water inlet pipe and the first water inlet pipe UNICOM, the first auxiliary waterexit pipe, the first secondary water inlet pipe, the second auxiliary waterexit pipe and the second secondary water inlet pipe all are equipped with valve.Above-mentioned setting can make first waterflood pump and the exchange of auxiliary waterflood pump use, and realizes that promptly first waterflood pump can be to secondary electrical desalter notes de-mineralized water, and auxiliary waterflood pump can be annotated de-mineralized water to the one-level electrical desalter.

As the further improvement of the utility model, also be connected with the auxiliary water injection pipe with the first oil pipe UNICOM on second waterflood pump, on the auxiliary water injection pipe valve is housed, according to productions needs, can be through second waterflood pump to secondary electrical desalter notes de-mineralized water.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is the synoptic diagram of electrical desalter notes, water-freeing arrangement in the prior art;

Fig. 2 is the synoptic diagram of a kind of embodiment of the utility model;

Fig. 3 is the synoptic diagram of the another kind of embodiment of the utility model.

Embodiment

As shown in Figure 1; Electrical desalter of the prior art is annotated, water-freeing arrangement; It comprises one-level electrical desalter 1, secondary electrical desalter 2, three grades of electrical desalters 3, first waterflood pump 4, auxiliary waterflood pump 13, second waterflood pump 5 and desalination water pot 6; Second water inlet pipe 20 with desalination water pot 6 UNICOMs is housed on second waterflood pump 5; Be equipped with respectively on second waterflood pump 5 with the auxiliary water injection pipe 19 of secondary electrical desalter 2 UNICOMs, with second rising pipe 25 of three grades of electrical desalter 3 UNICOMs, be connected with crude oil inlet pipe 7 on the one-level electrical desalter 1, be linked with first oil pipe 8 between one-level electrical desalter 1 and the secondary electrical desalter 2; Be linked with second oil pipe 9 between secondary electrical desalter 2 and three grades of electrical desalters 3; First water shoot 10, second water shoot 11 and the 3rd water shoot 12 are housed respectively on one, two, three electrical desalter, and the intersection of the above-mentioned auxiliary water injection pipe 19 and first water shoot 10 and the intersection of second rising pipe 25 and second water shoot 11 all can be provided with interchanger 26, make de-mineralized water and draining carry out heat exchange.Be equipped with on first waterflood pump 4 with first water inlet pipe 21 of the 3rd water shoot 12 UNICOMs, with first rising pipe 22 of crude oil inlet pipe 7 UNICOMs; Auxiliary waterflood pump 13 is parallelly connected with first waterflood pump 4; Only open during normal the use in two pumps wherein one get final product; When in two pumps wherein one when going wrong, an other pump startup.

Electrical desalter as shown in Figure 2 is annotated, water-freeing arrangement; Arrow line among the figure is the flow circuits of de-mineralized water; A mouth shown in the figure is a crude oil import; It comprises one-level electrical desalter 1, secondary electrical desalter 2, three grades of electrical desalters 3, first waterflood pump 4, auxiliary waterflood pump 13, second waterflood pump 5 and desalination water pot 6; Second water inlet pipe 20 with desalination water pot 6 UNICOMs is housed on second waterflood pump 5; Be connected with crude oil inlet pipe 7 on the one-level electrical desalter 1, be linked with first oil pipe 8 between one-level electrical desalter 1 and the secondary electrical desalter 2, be linked with second oil pipe 9 between secondary electrical desalter 2 and three grades of electrical desalters 3; First water shoot 10, second water shoot 11 and the 3rd water shoot 12 are housed respectively on one, two, three electrical desalter; First rising pipe 22 that is equipped with on first water inlet pipe, 21, the first waterflood pumps 4 with the 3rd water shoot 12 UNICOMs with crude oil inlet pipe 7 UNICOMs is housed on first waterflood pump 4, auxiliary waterflood pump 13 be equipped with the auxiliary water inlet pipe 23 of second water shoot, 11 UNICOMs, with the auxiliary rising pipe 24 of first oil pipe, 8 UNICOMs; Be equipped with on second waterflood pump 5 with second rising pipe, 25, the second water inlet pipes 20 of second oil pipe, 9 UNICOMs, second rising pipe 25, first rising pipe 22, first water inlet pipe 21, auxiliary water inlet pipe 23 and auxiliary rising pipe 24 on valve 14 all is housed.The intersection of above-mentioned second rising pipe 25 and second water shoot 11 can be provided with interchanger 26, makes de-mineralized water and draining carry out heat exchange.

Electrical desalter as shown in Figure 3 is annotated, water-freeing arrangement, basic identical shown in its constructional feature and Fig. 2.Difference is that it has kept second waterflood pump 5 in the prior art can be annotated de-mineralized water in the secondary electrical desalter function; Promptly also be connected with auxiliary water injection pipe 19 on second waterflood pump 5 with first oil pipe, 8 UNICOMs; On the auxiliary water injection pipe 19 valve 14 is housed; The intersection of the auxiliary water injection pipe 19 and first water shoot 10 can be provided with interchanger 26, makes de-mineralized water and draining carry out heat exchange; And be provided with the function that auxiliary waterflood pump 13 can exchange with first waterflood pump 4; Promptly first waterflood pump 4 also is equipped with the first auxiliary waterexit pipe 15 and the first secondary water inlet pipe 16; On the auxiliary waterflood pump 13 the second auxiliary waterexit pipe 17 and the second secondary water inlet pipe 18 are housed; The first auxiliary waterexit pipe 15 and auxiliary rising pipe 24 UNICOMs, the first secondary water inlet pipe 16 and auxiliary water inlet pipe 23 UNICOMs, the second auxiliary waterexit pipe 17 and first rising pipe, 22 UNICOMs; The second secondary water inlet pipe 18 and first water inlet pipe, 21 UNICOMs, the secondary water inlet pipe of the first auxiliary waterexit pipe 15, first 16, the second auxiliary waterexit pipe 17 and the second secondary water inlet pipe 18 all are equipped with valve 14.

Claims

An electrical desalter annotate, water-freeing arrangement; Comprise one-level electrical desalter (1), secondary electrical desalter (2), three grades of electrical desalters (3), first waterflood pump (4), auxiliary waterflood pump (13), second waterflood pump (5) and desalination water pot (6); Second water inlet pipe (20) with desalination water pot (6) UNICOM is housed on second waterflood pump (5); Be connected with crude oil inlet pipe (7) on the one-level electrical desalter (1); Be linked with first oil pipe (8) between one-level electrical desalter (1) and the secondary electrical desalter (2); Be linked with second oil pipe (9) between secondary electrical desalter (2) and the three grades of electrical desalters (3); First water shoot (10), second water shoot (11) and the 3rd water shoot (12) are housed respectively on one, two, three electrical desalter; First water inlet pipe (21) with the 3rd water shoot (12) UNICOM is housed on first waterflood pump (4); It is characterized in that: first rising pipe (22) with crude oil inlet pipe (7) UNICOM is housed on first waterflood pump (4); Auxiliary waterflood pump (13) be equipped with the auxiliary water inlet pipe (23) of second water shoot (11) UNICOM, with the auxiliary rising pipe (24) of first oil pipe (8) UNICOM, second rising pipe (25) with second oil pipe (9) UNICOM is housed on second waterflood pump (5), on second water inlet pipe (20), second rising pipe (25), first rising pipe (22), first water inlet pipe (21), auxiliary water inlet pipe (23) and the auxiliary rising pipe (24) valve (14) is housed all.
2. electrical desalter according to claim 1 is annotated, water-freeing arrangement; It is characterized in that: first waterflood pump (4) also is equipped with the first auxiliary waterexit pipe (15) and the first secondary water inlet pipe (16); On the auxiliary waterflood pump (13) the second auxiliary waterexit pipe (17) and the second secondary water inlet pipe (18) are housed; The first auxiliary waterexit pipe (15) and auxiliary rising pipe (24) UNICOM; The first secondary water inlet pipe (16) and auxiliary water inlet pipe (23) UNICOM; The second auxiliary waterexit pipe (17) and first rising pipe (22) UNICOM, the second secondary water inlet pipe (18) and first water inlet pipe (21) UNICOM, the first auxiliary waterexit pipe (15), the first secondary water inlet pipe (16), the second auxiliary waterexit pipe (17) and the second secondary water inlet pipe (18) all are equipped with valve (14).
3. electrical desalter according to claim 1 and 2 is annotated, water-freeing arrangement, it is characterized in that: also be connected with the auxiliary water injection pipe (19) with first oil pipe (8) UNICOM on second waterflood pump (5), on the auxiliary water injection pipe (19) valve (14) be housed.