SU1577867A1 - Line for painting articles - Google Patents

Abstract

The invention relates to painting equipment and can be used in painting lines of products with the purification of air emissions from harmful substances, such as solvent vapors by the method of after-burning them. The invention makes it possible to reduce the energy consumption of the painting line by increasing the efficiency of the catalytic afterburning of the exhaust air. For this, inside the unit 2 of surface treatment and installation of painting 4, fences are installed in the form of internal frames 9,24, respectively, with exhaust pipes in them. The latter are connected through flame arresters 15.35 and fans 14.33 to the inlet pipe 16 of the catalytic afterburner 6, which is also connected through the flame arrester 21 to the exhaust pipes 19 of the drying units 5. In this line, the inner frames 9.24 form reduced closed working volumes in the painting unit 4 and the unit 2 for surface preparation with a higher concentration of solvent in them, which makes it possible to include air emissions from them along with emissions from the drying units 5 into a single scheme of afterburning of the line. 1 hp f-ly, 4 ill.

Description

one

(21) 4480692 / 23-05

(22) 09/12/88

(46) 07.15.90. Bul No. 26

(71) Design Institute Research and Production Association Spectrum

(72) E.I. Savulkin, A.N. Mierin, V.M.Andreenok, and B.V. Gerashchenko (53) 678,056 (088.8)

(56) USSR Author's Certificate No. 1024) 18, cl. B 05 B 15/12, 1982.

USSR Author's Certificate No. 1186280, cl. B 05 C 9/08, 1984.

(54) LINE OF COLORING PRODUCTS I

(57) The invention relates to painting equipment and can be used in product dyeing lines with the purification of air emissions from harmful substances, for example, solvent vapors by the method of after-burning them. retention allows to reduce the energy consumption of the painting line by increasing the efficiency of catalytic afterburning of exhaust air,

20

In atmosphere

(L

ate

K1

-si

00

05

-sj

Fig 2

For this, inside the unit 2 for surface treatment and installation of painting 4, fences are installed in the form of internal frames 9, 24, respectively, with exhaust pipes in them. The latter are connected via fire barriers 15, 35 and fans 14, 33 to the inlet pipe 6 of the catalytic afterburner 6, which is also connected through the fire barrier 2 to exhaust pipes 19

The invention relates to painting equipment and can be used in painting lines with the preparation of the surface of products with organic solvents, for example, white spirit, gasoline,

The aim of the invention is to reduce the energy consumption of the line by increasing the efficiency of the catalytic afterburning of the exhaust air.

Fig. 1 schematically shows a line for dyeing products, a plan view; FIG. 2 is the same, side view in FIG. 3 - section A-A in FIG. 2; Fig. 4 is a section B-B in Fig. 2, the Pini product dyeing contains successively arranged along the overhead conveyor 1 a surface preparation unit 2, a moisture drying unit 3, a dyeing unit 4, a drying unit 5 after dyeing, and a device 6 catalytic afterburner with 7 ventilation system. Unit 2 surface preparation consists of outdoor 8. and internal 9 enclosing frames with transport 10 and working AND openings. The inner frame 9, limiting the treatment area, has an exhaust pipe 12, which is connected via pipeline 13 to fan 14 and flame arrester 15 to inlet pipe 16 of the catalytic afterburner "In the working opening .11 of the surface preparation unit 2, nozzles 17 and brushes 18 are installed cleaning products “Installations 3 and 5 for drying from moisture and after painting are made with exhaust pipes 19, which are connected to the inlet pipe-drying units 5 via pipeline 20 through a fire barrier 21 These inner frames 9, 24 form reduced closed working volumes in the painting unit 4 and the unit 1 2 for preparing the surface with a higher concentration of solvent in them, which makes it possible to incorporate air emissions from them along with emissions from the drying units 5 into a single scheme of catalytic afterburning of the entire line . 1 з, п, ф-лгп, 4 Il.

0

five

0

five

0

five

0

five

the wire 16 of the catalytic afterburner 6, the outlet pipe 22 of which is connected to the inlet pipes 23 of the drying units 3 and 5. The painting unit 4 consists of internal 24 and external 25 enclosing frames with transport 26 and working 27 openings in each, hydraulic filter 28 with ventilation system 29 and sedimentary bath 30. Internal frame 24 has a discharge pipe 31, which by means of pipe 32 with a fan 33 and the built-in filter 34 and through the ignition unit 35 is connected to the inlet pipe 16 of the catalytic afterburner 6. In the working opening 27 is placed a manipulator with a spray 36.

Lini works as follows. The products 37, moving on the conveyor 1, are successively passed through the surface preparation unit 2, the drying unit 3 for drying, the setting 4 for painting and the setting 5 for drying after painting. In unit 2., products 37 are subjected to technological treatment by pouring organic solvent on the nozzles 17 and cleaning them with brushes 18, while the evolved solvent vapors are concentrated in the internal frame 9, air contaminated by solvent vapors It is sucked out of the inner frame 9 through the exhaust pipe 12 and enters through conduit 13 through the fire barrier 15 to the inlet conduit 16 of the catalytic afterburner 6. In the installation, 4 stains - solvent vapors emitting

when painting the product, spray Lemu 36; Concentrate in the inner frame 24, from which the contaminated air through the exhaust patron 31 and the filter 34 is sucked off by the fan 33 and through the pipeline 32 through the arrester 35 also enters the inlet duct water 16 and on it in the device 6 catalytic afterburning. In the latter, the solvent vapors are burned, and the cleaned air, whose temperature rises sharply, is supplied through conduit 22 through the inlet 23 to the drying unit 5 and blows the painted product, then through the exhaust pipes 19 and the flame arrestor 21 again enters through the conduit 20 into the device 6 catalytic afterburner. In this case, part of the air can be directed to the drying unit 3 installed after the surface preparation unit 2, as well as for heating the supply air in the painting unit 4 and the surface preparation unit 2 (not shown) or for other process needs.

Thus, in the surface preparation unit 2 with organic solvents and the painting unit 4, air emissions are divided into two streams, one of them with a maximum concentration of solvent vapors and a smaller amount, due to the possibility of decreasing air velocity in the openings of the inner frames is sucked from them and goes to catalytic afterburning, and a second stream, larger in quantity, is sucked through a hydraulic filter 28 or another purification device and is emitted into the atmosphere (Figure 2).

The amount of sucked air from the inner cages 9 and 24 is controlled by means of gates or dampers (not shown), which allows the concentration of solvent vapors in the suctioned steam-air mixture to be adjusted as well.

Creation in the line of closed reduced volumes in the working areas of set-up 55 afterburning.

577867 "

staining and surface preparation aggregate can significantly increase the concentration of the solution, the solvent in the emitted air (up to

25

standards recommended for thermocatalytic afterburning), which increases the efficiency of the process of burning solvents, while lower volumes

Suction air from these units allows them to be included, together with air emissions from drying plants, into a single scheme for catalytic afterburning with subsequent heat recovery, which reduces the energy consumption of the line as a whole.

Claims (2)

Invention Formula I. Production dyeing lines, containing an assembly for surface preparation with organic solvents, dyeing and drying plants made in the form of chambers with treatment zones and a ventilation system, a catalytic afterburning device with flame arresters whose inlet and outlet pipelines are connected to drying plants, and a transporting means, characterized in that, in order to reduce energy consumption by increasing the efficiency of the catalytic afterburning of the exhaust air, the unit for preparation of air is organic These solvents are made of internal and external enclosing frames with transport and working openings 3 each, with the internal frame placed in the treatment zone and provided with an exhaust pipe connected to the inlet pipe of the catalytic afterburner. 2. The line for dyeing products according to claim 45, wherein. that the camera of the painting unit is made of external and internal enclosing frames with transport and working openings in each, with the internal frame placed in the treatment zone and provided with a discharge pipe connected through a pipeline with a filter to the input pipe of the catalytic device30 35 40 50 H 3 2 I in atmosphere Fia.Z 1 28 , Fig4 26 t. 25 VЈ0.1Mlc l / 27 Vz $$ "/ c 36