CN103184702A

CN103184702A - Papermaking pulping reactor

Info

Publication number: CN103184702A
Application number: CN2013101480425A
Authority: CN
Inventors: 朱运江; 郑富安
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-26
Filing date: 2013-04-26
Publication date: 2013-07-03
Anticipated expiration: 2033-04-26
Also published as: CN103184702B

Abstract

The invention discloses a papermaking pulping reactor which consists of a reaction kettle with heating tubes around the lower part, a shell and a heating furnace, wherein the heating furnace is arranged at the bottom of the shell; the reaction kettle is arranged in the shell; a reaction kettle bracket is arranged around a furnace mouth of the heating furnace; the bottom of the reaction kettle is located on the reaction kettle bracket at the furnace mouth of the heating furnace; hot air through holes are formed around the bottom of the reaction kettle; each hot air through hole in the reaction kettle is connected with a heating tube; through holes are uniformly formed in one circle on the wall of the middle of the reaction kettle; the upper ends of the heating tubes are connected with the through holes in the wall of the reaction kettle; and a smoke channel is arranged between the outer wall of the reaction kettle and the inner wall of the shell. The device has a simple structure; besides the advantages of the prior art, since the heating tubes directly heat liquid in the reaction kettle and cold water is not added in the reaction kettle in a production process, the concentration of a mother solution is not reduced, the reaction of paper pulp in the reaction kettle is fast, the effect is good, the reaction temperature is high, the heating time is greatly shortened, the heat utilization rate is high, and energy is saved; and moreover, the reaction time can be reduced by 1/3 than before, the production efficiency is improved, and the economic benefits are greatly increased.

Description

The paper-making pulping reaction device

Technical field

The present invention relates to the pulping equipment that a kind of paper industry is used, is a kind of ryegrass pulping equipment specifically.

Background technology

Traditional ryegrass pulping technology is the High Temperature High Pressure boiling, spurt, pulp washing, bleaching, pulp washing, waste water control, alkali reclaim black liquor treatment, and device therefor has rotary spherical digester, mixer, wash engine, beater etc.As everyone knows, need at first in the ryegrass pulping technology of traditional paper industry that wheat straw is added caustic soda and carry out the High Temperature High Pressure boiling, and the thermophilic digestion process can produce some black liquids, the chlorine in the back floats, also can produce many waste water in the pulp washing technology.Because paper industry is a high pollution industry, there is strict requirement in environmental administration, is exactly to go up qualified environmental protection equipment, and black liquid and paper waste are carried out processing up to standard.Because the environmental protection equipment price is very expensive, general middle small paper mill can't bear, and does not have environmental protection equipment qualified on the ability, so only closes down.But because being in great demand of China's paper pulp all needs a large amount of paper pulp of import every year, a year import volume reaches more than 4,800 ten thousand tons, needs to consume last trillion dollars foreign exchange.In order to address the above problem, the inventor has designed a kind of integral type eddy current pulping equipment (ZL), and this equipment does not produce black liquor of pulp making basically, and can thoroughly change traditional pulping process.But this equipment also exists a problem, be exactly that energy consumption is bigger, owing to be to adopt steam directly to heat, not only heat time heating time is long, and steam can produce some condensed waters in heating process, the concentration of these condensed waters meeting diluting reaction still Chinese traditional medicines causes slurrying time length and effects on slurry making bad.

Summary of the invention

The objective of the invention is to design a kind of paper-making pulping equipment, this equipment is except the advantage with prior art, can also overcome prior art problems, it concentrates equipment used in the pulping process is an equipment, boiling, stirring, pulp washing, making beating, decolouring are finished in an equipment, and can not be produced black liquor, the paper mill need not gone up environmental protection equipment and be got final product ordinary production, thoroughly change traditional pulping process, and energy-conservation, efficient is high.

Realize that the technical scheme that the object of the invention is taked is: it is made up of reactor, shell, the heating furnace of lower periphery band heating tube, heating furnace is located at outer casing bottom, the reactor setting in the enclosure, be provided with the reactor support at heating furnace fire door periphery, the reactor bottom is sitting on the reactor support of heating furnace fire door; Have the hot gas through hole at reactor bottom periphery, be connected with a heating tube on each hot gas through hole in reactor, a week evenly has through hole on the reactor middle wall, and the upper end of heating tube is connected on the through hole on the reactor wall; Be provided with a ring smoke passage between the outer wall of reactor and outer casing inner wall, exhaust opening is located at the top of device; Grout outlet is located at the bottom of reactor;

Be provided with agitating device in the reactor.

The reactor support is the dentation annular, and has the downward gradient, and the tail band of reactor has tapering, and the tapering of Polycondensation Reactor and Esterification Reactor is corresponding with the gradient of reactor support.

For energy-conservation, take full advantage of heat, be provided with an interlayer around the wall in the enclosure, water inlet is located at the bottom of interlayer, and delivery port is located at the top of interlayer, and is connected with reactor top.

Good effect of the present invention is: simple in structure, make easily, and easy to maintenance, and cost is low; Do not have sewage discharge except possessing integral type eddy current pulping equipment, do not need black liquor treatment, do not need chemical recovery system, only the investment of environmental protection equipment minimizing is with regard to more than one hundred million units; All technology is finished in an equipment, and technological process is shortened greatly, reduces labour intensity and operating cost, shortens the production time, enhances productivity; More traditional pulping process can save energy 90%; Because without pulp washing, but using water wisely is more than 90%; Pulping yield is more than 80%, directly make white slurry, pulp quality is good, fibrousness is better than outside the advantage such as traditional slurrying, because in process of production, directly heats liquid in the reactor by heating tube, avoided mother liquid concentration in the live (open) steam heating condensate water diluting reaction still, reduce the problem of reaction speed, because mother liquid concentration is constant, paper pulp is fast at the reactor internal reaction, effective, not only reaction temperature height, and heat time heating time shortens greatly, and heat utilization efficiency is higher, more energy-conservation, reaction time can reduce 1/3rd than the former, has not only improved production efficiency, has also improved economic benefit greatly.

Description of drawings

Accompanying drawing 1 is structural representation of the present invention; Accompanying drawing 2 is the left view of accompanying drawing 1; Accompanying drawing 3 is the shell mechanism schematic diagram; Accompanying drawing 4 is that accompanying drawing 1A-A is to cutaway view.

The specific embodiment

Shown in accompanying

drawing

1,2, it is made up of reactor 2, shell 6, the heating furnace 12 of lower periphery band heating tube 7, and heating furnace 12 is located at shell 6 bottoms, and reactor 2 is arranged in the shell 6, and the plate 3 that is connected and fixed through top is fixed on the shell 6; For energy-conservation, take full advantage of heat, around shell 6 inwalls, be provided with an interlayer 5, can utilize the pre-thermal response water of waste heat in the interlayer 5, water inlet 13 is located at the bottom of interlayer 5, and delivery port 14 is located at the top of interlayer 5, and is connected with reactor 2 tops.Be provided with reactor support 11 at heating furnace 12 fire door peripheries, reactor support 11 is profile of tooth ring-type (as shown in Figure 3), and an end is fixed on the fire door, and the other end is fixed on shell 5 inwalls obliquely, reactor 2 bottoms have tapering, are sitting on the reactor support 11 of heating furnace 12 fire doors; Have the hot gas through hole in reactor 2 bottom periphery, in reactor 2, be connected with a heating tube 7 on each hot gas through hole, a week evenly has through hole 10 on reactor 2 middle wall, the upper end of heating tube 7 is connected on the through hole 10 on reactor 2 walls, the heating tube hot air intake of the direct corresponding reactor of fire door 2 bottoms; Be provided with a ring smoke passage 4 between the outer wall of reactor 2 and shell 5 inwalls, exhaust opening 9 is located at exhaust gases passes 4 tops.Hot gas from heating furnace 12 fire doors directly the hot gas through hole through reactor 2 bottoms enter heating tube 7 in the reactor 2, after heat is absorbed by the reactant in the reactor 2, useless flue gas is discharged from the ring smoke passage 4 of reactor 2 outsides, and the waste heat of useless flue gas is absorbed by the water in the interlayer on the shell 65; Grout outlet 8 is located at the bottom of reactor 2; Fixing with the stiffening ring 1 of channel-section steel weldering system in reactor 2 edges suitable for reading; At reactor 2 bracing frames that are provided with suitable for reading, stirring motor is fixedly mounted on the bracing frame, and stirring vane 15 is located at middle and lower part (as shown in Figure 4) in the reactor 2.

Claims

1. paper-making pulping reaction device, it is characterized in that: it is made up of reactor, shell, the heating furnace of lower periphery band heating tube, heating furnace is located at outer casing bottom, the reactor setting in the enclosure, be provided with the reactor support at heating furnace fire door periphery, the reactor bottom is sitting on the reactor support of heating furnace fire door; Have the hot gas through hole at reactor bottom periphery, be connected with a heating tube on each hot gas through hole in reactor, a week evenly has through hole on the reactor middle wall, and the upper end of heating tube is connected on the through hole on the reactor wall; Be provided with a ring smoke passage between the outer wall of reactor and outer casing inner wall, exhaust opening is located at the top of device; Grout outlet is located at the bottom of reactor; Be provided with agitating device in the reactor.

2. paper-making pulping reaction device according to claim 1, it is characterized in that: the reactor support is the dentation annular, and has the downward gradient, and the tail band of reactor has tapering, and the tapering of Polycondensation Reactor and Esterification Reactor is corresponding with the gradient of reactor support.

3. paper-making pulping reaction device according to claim 1 is characterized in that: be provided with an interlayer around the wall in the enclosure, water inlet is located at the bottom of interlayer, and delivery port is located at the top of interlayer, and is connected with reactor top.