CN2268909Y

CN2268909Y - Polymer drying apparatus

Info

Publication number: CN2268909Y
Application number: CN 96226383
Authority: CN
Inventors: 李文辉; 张新志; 段文德; 孙若松
Original assignee: POLYACRYLONITRILE CHEMICAL PLANT FUSHUN PETROCHEMICAL INDUSTRY Co
Current assignee: POLYACRYLONITRILE CHEMICAL PLANT FUSHUN PETROCHEMICAL INDUSTRY Co
Priority date: 1996-05-21
Filing date: 1996-05-21
Publication date: 1997-11-26
Anticipated expiration: 2006-05-21

Abstract

The utility model relates to an improved technology in view of a polymer drier produced by the American Dupont company. Four air heaters and an air exhaust fan are additionally arranged on the basis of an original drier. An original throughflow type with internal heating and internal circulation is changed into a drying method with internal heating, external supplementary heating and forced air exhaustion. The utility model greatly enhances the production capacity of the drier and improves the condition of process control.

Description

The dry machine of polymer

The utility model relates to the dry machine of polymer of dry acrylic fiber production line, is the improvement technology to such approved product of the existing U.S..

The dry machine of the HS601 type polymer of du pont company was installed and used in China in the early 1990s.32.461 meters of this machine fuselage length overalls, wide 4.24 meters, high 3.35 meters, efficient drying length is 28 meters.There are I, II, four dry sections of III, IV in inside, and there are two groups of six fin heaters and four circulating fans in each district, and full machine has 24 heaters, 16 typhoon machines.The even machine in material shop is arranged before the I district, and IV has spiral discharging device behind the district, and a chain plate conveyor belt runs through full machine, and material advances from the I district, and the IV district goes out; There is the natural air inlet mouth in the IV district, and there is exhaust blower in the I district, and air-flow enters from the IV district, and the I district discharges.Drying process is: the warm material of preceding working procedure falls into the even machine in shop through extruder, is carried from the I district to the IV district by chain plate conveyor belt; Indoor natural wind is entered under the IV district heating fin by air inlet, after heating, deliver to material bed on the carrier bar by four circulating fans of heater top, hot blast penetrates material, with dry materials, self temperature reduces the back by last, flow between following carrier bar under the III district heating fin, again after III district heater heating, delivered on the III district carrier bar material bedly by four circulating fans above the III district, penetrate material, with dry materials, self temperature is lowered again, again through last, flow between following carrier bar under the II district heating fin ... so circulation, spiral advances, after air communication was crossed the wettest bed of material in I district, its water content was very big, then by outside the exhaust blower discharge machine in I district.Entering wet stock before the drying machine contains wet to be 54%, to go out the machine material after the drying and contain wet the requirement less than 0.5%.This machine designed capacity is 30,000 tons/year, and actually can only reach 2.2 ten thousand tons/year, and main cause is that I, II district heat deficiency in draught cause.

The purpose of this utility model is exactly to improve the output of the dry machine of polymer, makes it meet or exceed 30,000 tons/year production capacity.

This machine design is comparatively compact, can't increase heater and circulating fan in I, II district; Stop because of there is equipment front and back, also can't prolong, enlarge dry section; To consider the air-flow vortex simultaneously, make the possibility of dust accumulation blast.The technical solution adopted in the utility model is: on existing drying machine basis, add two air-heaters below III district carrier bar; Add an exhaust blower in the middle of the upper and lower carrier bar in the II district; Between even machine top, shop, I district, drying machine stone, add two air-heaters below the top cover.

Circulation flow-through type drying machine in the heating in original equipment belongs to, in the dry run, natural air is heated in body, pushes ahead by IV district → I district, and the moisture content of polymer is deviate from heating.Dry run of the present utility model is to carry out the additional dry-air blast of concurrent heating outside the machine on former machine flow process, forces air draft, and the drying principles that makes wet polymer is interior heating, outer concurrent heating, forces air draft to dehydrate.In operating procedure condition control contrast, the utility model technology controlling and process gentleness, the dry polymeric quality is good, and the plate rate of changing of spinning is low, and the gloss of lustrous fibre is bright.The more former machine of the utility model production capacity improves a lot, and maximum capacity can reach 4.4 tons/hour, and former machine has only 3.8 tons/hour.Improved output can reach 3.2 ten thousand tons/year.

Further specify structure of the present utility model below in conjunction with the drawings and Examples mode.

Fig. 1 is the dry machine structural representation of Dupont HS601 type polymer;

Fig. 2 is a structural representation of the present utility model;

Fig. 3 is that the A of Fig. 2 is to view.

The dry machine of Dupont HS601 type polymer has four dry sections, and there are two groups of six fin heaters 3 and four circulating fans 2 in every district, and heater 3 is by the steam heating of vapor line 1.I, II interval, II, III interval and III, IV interval have dividing

plate

4,5,6 respectively, have only the carrier bar place to communicate between adjacent dry section, and other position is separated by dividing plate.The wet polymer 15 that preceding working procedure is come is delivered on the upper link plate 7 through extruder 17, the even machine 16 in shop; Upper and

lower carrier bar

7,8 is the whole piece chain belt of a closure, and it turns round continuously and makes material be transported to the IV district by the I district on upper link plate 7, and the dry material 9 that IV comes out in the district draws off through spiral discharging device 10.There is natural wind air inlet 11 in the IV district, and there is

exhaust blower

13,14 in the I district.12 is drying machine underframe fine strain of millet, and 19 is the drying machine loam cake, and 18 is loam cake between stone, and 20 is the drying machine side plate.The utility model is on Dupont HS601 type drying machine basis, and carrier bar is set up two air-

heaters

21,22 for 8 times under the III district; Setting up two air-

heaters

23,24 under the top cover between even machine top, shop, I district, stone; 7,8 of upper and lower carrier bars are set up an exhaust blower 25 in the II district, and the air-admitting surface of air-

heater

21,22 is between 0.1-0.5 square metre, and its edge is a 0-6 rice apart from the distance that II, III separate plate 5, and the distance that separates plate 6 apart from III, IV is a 0-6 rice; The air-admitting surface of air-

heater

23,24 is between 0.2-1.5 square metre, and its edge is a 0-1 rice far from the distance of top board between stone 18, is 0-1 rice apart from the distance of side plate 20, is 1.5-2.7 rice apart from underframe fine strain of millet 12 distances; Exhaust blower 25 air port areas are 0.2-1 square metre, and its edge is a 0-6 rice apart from the distance that I, II separate plate 4, and the distance that separates plate 5 apart from II, III is a 0-6 rice.The air quantity of air-

heater

21,22,23,24 requires 15000-21000M ³/ H, blast 10-70mmH2O, operating temperature 25-125 ℃; Exhaust blower 25 air quantity require 12000-36000M ³/ H, blast 10-70mmH2O, operating temperature 60-110 ℃.

Claims

1, the dry machine of a kind of polymer, comprise four dry sections, two exhaust blowers (13), (14) in 16 circulating fans (2), 24 heaters (3), carrier bar chain conveyer belt (7), (8) and I district, it is characterized in that it also comprises two air-heaters (21), (22) that III district carrier bar (8) is following, the exhaust blower (25) in the middle of the upper and lower carrier bar in two air-heaters (23), (24) and II district between even machine top, shop, I district, stone under the top cover.

2, the dry machine of polymer according to claim 1, the air-admitting surface that it is characterized in that two air-heaters (21), (22) below the III district carrier bar is between 0.1-0.5 square metre, its edge separates plate (5) 0-6 rice apart from II, III, separates plate (6) 0-6 rice apart from III, IV; Two air-heaters (23) in I district, the air-admitting surface of (24) are between 0.2-1.5 square metre, and its edge is a 0-1 rice far from the distance of top board between stone (18), apart from side plate (20) 0-1 rice, are 1.5-2.7 rice apart from undercarriage bea (12) distance; The exhaust outlet area of the exhaust blower in II district (25) is 0.2-1 square metre, and its edge separates plate (4) 0-6 rice apart from I, II, and the distance that separates plate (5) apart from II, III is a 0-6 rice.

3, the dry machine of polymer according to claim 1 is characterized in that the air quantity of air-heater (21), (22), (23), (24) requires 15000-21000M ³/ H, blast are 10-70mmH2O, operating temperature 25-125 ℃; II district exhaust blower (25) air quantity requires 12000-36000M ³/ H, blast are 10-70mmH2O, and operating temperature is 60-110 ℃.